- Identification and biological evaluation of novel benzothiazole derivatives bearing a pyridine-semicarbazone moiety as apoptosis inducers via activation of procaspase-3 to caspase-3
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Three series of compounds were designed, synthesized and evaluated for their in vitro anticancer activity against a procaspase-3 over-expression cancer cell line (U937) and a procaspase-3 no-expression cancer cell line (MCF-7) to rule out off-target effects. Biological evaluation led to the identification of a series of benzothiazole derivatives bearing a pyridine-semicarbazone moiety, 8j and 8k, with promising anticancer activity and remarkable selectivity. Further mechanism studies revealed that compounds 8j and 8k could induce apoptosis of cancer cells by activating procaspase-3 to caspase-3, and compound 8k exhibited the strongest procaspase-3 activation activity. Structure-activity relationships (SARs) revealed that the presence of benzothiazole and an N,N,O-donor set is crucial for the anticancer activity and selectivity, and reducing the electron density of the N,N,O-donor set results in a dramatic decline in the anticancer activity and selectivity. Furthermore, toxicity evaluation (zebrafish) in vivo and metabolic stability studies (human, rat and mouse liver microsomes) were performed to provide reliable guidance for further PK/PD studies in vivo.
- Ma, Junjie,Ni, Xin,Gao, Yali,Huang, Kun,Liu, Jiaan,Wang, Yu,Chen, Roufen,Wang, Cuifang
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Read Online
- Zirconium-hydride-catalyzed site-selective hydroboration of amides for the synthesis of amines: Mechanism, scope, and application
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Developing mild and efficient catalytic methods for the selective synthesis of amines is a longstanding research objective. In this respect, catalytic deoxygenative amide reduction has proven to be promising but challenging, as this approach necessitates selective C–O bond cleavage. Herein, we report the selective hydroboration of primary, secondary, and tertiary amides at room temperature catalyzed by an earth-abundant-metal catalyst, Zr-H, for accessing diverse amines. Various readily reducible functional groups, such as esters, alkynes, and alkenes, were well tolerated. Furthermore, the methodology was extended to the synthesis of bio- and drug-derived amines. Detailed mechanistic studies revealed a reaction pathway entailing aldehyde and amido complex formation via an unusual C–N bond cleavage-reformation process, followed by C–O bond cleavage.
- Han, Bo,Jiao, Haijun,Wu, Lipeng,Zhang, Jiong
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p. 2059 - 2067
(2021/09/02)
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- Deoxygenative hydroboration of primary, secondary, and tertiary amides: Catalyst-free synthesis of various substituted amines
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Transformation of relatively less reactive functional groups under catalyst-free conditions is an interesting aspect and requires a typical protocol. Herein, we report the synthesis of various primary, secondary, and tertiary amines through hydroboration of amides using pinacolborane under catalyst-free and solvent-free conditions. The deoxygenative hydroboration of primary and secondary amides proceeded with excellent conversions. The comparatively less reactive tertiary amides were also converted to the corresponding N,N-diamines in moderate yields under catalyst-free conditions, although alcohols were obtained as a minor product.
- An, Duk Keun,Jaladi, Ashok Kumar,Kim, Hyun Tae,Yi, Jaeeun
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- Method for preparing tertiary amine organic compound from photocatalytically decomposing substituted formamide
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The invention discloses a method for preparing a tertiary amine compound from aldehyde and substituted formamide under the action of a photocatalyst. The method is characterized in that the reaction can be performed only by illumination under the conditions of no hydrogen and no reducing agent. The method is suitable for various aldehydes including aromatic aldehydes, fatty aldehydes and the like,has the characteristics of few byproducts and high product yield, does not need to use hydrogen in the reaction, avoids the use of noble metal hydrogenation catalysts, and has obvious technical and economic effects and application prospects.
- -
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Paragraph 0043-0045
(2021/01/12)
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- Synthesis of tertiary amines by direct Br?nsted acid catalyzed reductive amination
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Tertiary amines are ubiquitous and valuable compounds in synthetic chemistry, with a wide range of applications in organocatalysis, organometallic complexes, biological processes and pharmaceutical chemistry. One of the most frequently used pathways to synthesize tertiary amines is the reductive amination reaction of carbonyl compounds. Despite developments of numerous new reductive amination methods in the past few decades, this reaction generally requires non-atom-economic processes with harsh conditions and toxic transition-metal catalysts. Herein, we report simple yet practical protocols using triflic acid as a catalyst to efficiently promote the direct reductive amination reactions of carbonyl compounds on a broad range of substrates. Applications of this new method to generate valuable heterocyclic frameworks and polyamines are also included.
- Hussein, Mohanad A.,Dinh, An H.,Huynh, Vien T.,Nguyen, Thanh Vinh
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supporting information
p. 8691 - 8694
(2020/08/21)
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- Semicarbazone derivative serving as caspase-3 activator and application thereof
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The invention provides semicarbazone derivative serving as a caspase-3 activator and application thereof. A structural general formula of the semicarbazone derivative or pharmaceutically acceptable salts of the semicarbazone derivative is shown as a formula I shown in the description. The semicarbazone derivative disclosed by the invention can be applied to preparing of medicine for treating or preventing cancer diseases and other hyperplastic diseases; thus, treating or preventing the cancer diseases and other hyperplastic diseases, and the semicarbazone derivative has an excellent application prospect in the aspect of developing antineoplastic medicine.
- -
-
Paragraph 0081-0084
(2019/02/10)
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- Semicarbazone derivatives bearing phenyl moiety: Synthesis, anticancer activity, cell cycle, apoptosis-inducing and metabolic stability study
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A series of semicarbazone derivatives bearing phenyl moiety were synthesized and evaluated for the vitro anticancer activities in four human cancer cell lines (human colon cancer (HT29), human neuroblastoma (SK-N-SH), human breast cancer (MDA-MB-231), and human gastric cancer (MKN45)). Biological evaluation led to the identification of 11q and 11s, which showed excellent anticancer activities against tested cancer cell lines with IC50 values ranging from 0.32 to 1.57μM, respectively, while exhibiting weak cytotoxicity on the normal cells (human umbilical vein endothelial cell (HUVEC)). Flow cytometric assay for cell cycle and apoptosis revealed that 11q and 11s caused an arrest in the Sub-G1 cell cycle and inhibited proliferation of cancer cells by inducing apoptosis in a dose-dependent manner. Further enzymatic assay suggested that 11q and 11s could significantly activated procaspase-3 to caspase-3. Metabolic stability study indicated that 11q and 11s showed moderate stability in vitro in human and rat liver microsomes. In view of promising pharmacological activities of 11q and 11s, which had emerged as the valuable lead for further development in the treatment for cancer.
- Ma, Junjie,Ni, Xin,Gao, Yali,Huang, Kun,Wang, Yu,Liu, Jiaan,Gong, Guowei
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p. 351 - 360
(2019/05/07)
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- Methyl-Selective α-Oxygenation of Tertiary Amines to Formamides by Employing Copper/Moderately Hindered Nitroxyl Radical (DMN-AZADO or 1-Me-AZADO)
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Methyl-selective α-oxygenation of tertiary amines is a highly attractive approach for synthesizing formamides while preserving the amine substrate skeletons. Therefore, the development of efficient catalysts that can advance regioselective α-oxygenation at the N-methyl positions using molecular oxygen (O2) as the terminal oxidant is an important subject. In this study, we successfully developed a highly regioselective and efficient aerobic methyl-selective α-oxygenation of tertiary amines by employing a Cu/nitroxyl radical catalyst system. The use of moderately hindered nitroxyl radicals, such as 1,5-dimethyl-9-azanoradamantane N-oxyl (DMN-AZADO) and 1-methyl-2-azaadamanane N-oxyl (1-Me-AZADO), was very important to promote the oxygenation effectively mainly because these N-oxyls have longer life-times than less hindered N-oxyls. Various types of tertiary N-methylamines were selectively converted to the corresponding formamides. A plausible reaction mechanism is also discussed on the basis of experimental evidence, together with DFT calculations. The high regioselectivity of this catalyst system stems from steric restriction of the amine-N-oxyl interactions.
- Nakai, Satoru,Yatabe, Takafumi,Suzuki, Kosuke,Sasano, Yusuke,Iwabuchi, Yoshiharu,Hasegawa, Jun-ya,Mizuno, Noritaka,Yamaguchi, Kazuya
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supporting information
p. 16651 - 16659
(2019/11/11)
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- Electrochemical Dehydrogenative Imidation of N-Methyl-Substituted Benzylamines with Phthalimides for the Direct Synthesis of Phthalimide-Protected gem-Diamines
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A general and green electrochemical dehydrogenative method for the imidation of N-methyl benzylamines with phthalimides with excellent regioselectivities is reported for the first time. This operationally simple method offers a valuable tool to obtain str
- Lian, Fei,Sun, Caocao,Xu, Kun,Zeng, Chengchu
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supporting information
p. 156 - 159
(2019/01/11)
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- COVALENT ORGANIC FRAMEWORK FOR ADSORBING SO2 GAS AND METHOD FOR PREPARING THE SAME
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The present invention refers to SO2 Gas adsorption number is suitable as a covalent organic frameworks structure (Covalent Organic Framework, COF) and manufacturing method relates to search, imide structure has backbone of the present invention covalent organic frameworks, SO2 6 Frame of network architecture having a polar group having reactive porous are disclosed. (by machine translation)
- -
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Paragraph 0098-0101
(2018/09/02)
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- Borinic Acid Catalysed Reduction of Tertiary Amides with Hydrosilanes: A Mild and Chemoselective Synthesis of Amines
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A reduction of various aryl, alkyl, and α,β-unsaturated amides with phenylsilane, catalysed by a borinic acid, is reported. The unprecedented reaction was carried out under very mild conditions and led to useful amines. Furthermore, the reaction tolerates a variety of functional groups. Initial investigations implicated that an intermediate diarylhydroborane is involved in the reaction mechanism.
- Chardon, Aurélien,Mohy El Dine, Tharwat,Legay, Rémi,De Paolis, Micha?l,Rouden, Jacques,Blanchet, Jér?me
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supporting information
p. 2005 - 2009
(2017/02/19)
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- Graphene-enhanced platinum-catalysed hydrosilylation of amides and chalcones: A sustainable strategy allocated with in situ heterogenization and multitask application of H2PtCl6
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We describe a new sustainable strategy for the comprehensive utilization of a platinum catalyst in different organic transformations, in which an organosilicon/graphene-supported platinum catalyst prepared from a simple hydrosilylation-type reduction could be further used in the 1,4-hydrosilylation of chalcones. The rationally designed and in situ formed Pt@G@Si nanocatalyst is demonstrated to be highly effective in the 1,4-hydrosilylation of α,β-unsaturated enones, allowing for the facile synthesis of a variety of otherwise inaccessible substituted silyl enolates. In addition, with the aid of platinum catalyst residue and TBAF, the one-pot downstream Michael addition of substituted silyl enolates to alkyl acrylates is also reported in this work.
- Li, Ning,Dong, Xiao-Yun,Zhang, Jing-Lei,Yang, Ke-Fang,Zheng, Zhan-Jiang,Zhang, Wei-Qiang,Gao, Zi-Wei,Xu, Li-Wen
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p. 50729 - 50738
(2017/11/10)
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- Design, synthesis and antiproliferative activity of novel benzothiazole derivatives conjugated with semicarbazone scaffold
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Two series of novel benzothiazole derivatives conjugated with semicarbazone scaffold were designed and synthesized through a structure-based molecular hybridization strategy. All the target compounds were evaluated for their cytotoxicity in vitro against three cancer cell lines (HT-29, MKN-45 and H460) by standard MTT assay. The pharmacological results indicated that seven compounds (17h-n) exhibited comparable or even better antiproliferative activity in comparison with reference drugs Sorafenib and PAC-1. Particularly, compound 17i displayed remarkable cytotoxicity against tested three cancer cell lines with IC50 values of 0.84, 0.06 and 0.52 μM, which were 4.3-, 36.6-, 4.2-folds more potent than Sorafenib and 1.2-, 13.7-, 6.9-times more active than PAC-1, respectively.
- Bao, Guanglong,Du, Baoquan,Ma, Yuxiu,Zhao, Meng,Gong, Ping,Zhai, Xin
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p. 489 - 498
(2016/07/19)
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- Chemoselective Reduction of Tertiary Amides to Amines Catalyzed by Triphenylborane
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Triphenylborane (BPh3) was found to catalyze the reduction of tertiary amides with hydrosilanes to give amines under mild condition with high chemoselectivity in the presence of ketones, esters, and imines. N,N-Dimethylacrylamide was reduced to provide the α-silyl amide. Preliminary studies indicate that the hydrosilylation catalyzed by BPh3may be mechanistically different from that catalyzed by the more electrophilic B(C6F5)3.
- Mukherjee, Debabrata,Shirase, Satoru,Mashima, Kazushi,Okuda, Jun
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supporting information
p. 13326 - 13329
(2016/10/30)
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- Catalytic reduction of amides to amines by electrophilic phosphonium cations via FLP hydrosilylation
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A catalytic methodology for the conversion of amides to amines is reported. Of the 25 examples described, 14 examples involve the reduction of N-trifluoroacetamides to the corresponding trifluoroethylamines. These reductions are achieved by catalytic hydrosilylation of the amide mediated by an electrophilic phosphonium cation (EPC) catalyst.
- Augurusa, Alessandra,Mehta, Meera,Perez, Manuel,Zhu, Jiangtao,Stephan, Douglas W.
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supporting information
p. 12195 - 12198
(2016/10/21)
-
- Dual antitumor and antiangiogenic activity of organoplatinum(II) complexes
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A library of over 20 cycloplatinated compounds of the type [Pt(dmba-R)LCl] (dmba-R = C,N-dimethylbenzylamine-like ligand; R being MeO, Me, H, Br, F, CF3, and NO2 substituents in the R5 or R4 position of the phenyl ring; L = DMSO and P(C6H4CF3-p)3) has been prepared. All compounds are active in both human ovarian carcinoma A2780 cells and cisplatin-resistant A2780cisR cells, with most of the DMSO platinum complexes exhibiting IC50 values in the submicromolar range in the A2780 cell line. Interestingly, DMSO platinum complexes show low cytotoxicity in the nontumorigenic kidney cell line BGM and therefore high selectivity factors SF. In addition, some of the DMSO platinum complexes effectively inhibit angiogenesis in the human umbilical vein endothelial cell line EA.hy926. These are the first platinum(II) complexes reported to inhibit angiogenesis at a close concentration to their IC50 in A2780 cells, turning them into dual cytotoxic and antiangiogenic compounds.
- Zamora, Ana,Pérez, Sergio A.,Rodríguez, Venancio,Janiak, Christoph,Yellol, Gorakh S.,Ruiz, José
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p. 1320 - 1336
(2015/03/04)
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- TETRACYCLIC ANTHRAQUINONE DERIVATIVES
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Disclosed are a compound represented by formula (I) and a pharmaceutically acceptable salt thereof, wherein R1, R2, R3, R4, R5, W, n are defined as in the present application.
- -
-
Paragraph 0104
(2015/02/02)
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- Tetracyclic Anthraquinone Derivatives
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Disclosed are a compound represented by formula (I) and a pharmaceutically acceptable salt thereof, wherein R1, R2, R3, R4, R5, W, n are defined as in the present application.
- -
-
Paragraph 0222
(2015/06/24)
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- Design, synthesis, and structure-activity relationships of novel benzothiazole derivatives bearing the ortho-hydroxy N-carbamoylhydrazone moiety as potent antitumor agents
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A series of novel benzothiazole derivatives bearing the ortho-hydroxy N-carbamoylhydrazone moiety were designed and synthesized and their cytotoxic activities against five cancer cell lines (NCI-H226, SK-N-SH, HT29, MKN45, and MDA-MB-231) were screened in vitro. Most of them showed moderate to excellent activity against all the tested cell lines. Among them, compounds 15g (procaspase-3 EC50 = 1.42 μM) and 16b (procaspase-3 EC 50 = 0.25 μM) exhibited excellent antitumor activity with IC 50 values ranging from 0.14 μM to 0.98 μM against all cancer cell lines, which were 1.8-8.7 times more active than the first procaspase activating compound (PAC-1) (procaspase-3 EC50 = 4.08 μM). The structure-activity relationship (SAR) analyses indicated that the introduction of a lipophilic group (a benzyloxy or heteroaryloxy group) at the 4-position of the 2-hydroxy phenyl ring was beneficial to antitumor activity, and the presence of substituents containing nitrogen that are positively charged at physiological pH could also improve antitumor activity. It was also confirmed that the steric effect of the 4-position substituent of the benzyloxy group had a significant influence on cytotoxic activity.
- Ma, Junjie,Chen, Dong,Lu, Kuan,Wang, Lihui,Han, Xiaoqi,Zhao, Yanfang,Gong, Ping
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p. 257 - 269
(2014/09/29)
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- Synthesis and biological evaluation of benzothiazole derivatives bearing the ortho-hydroxy-N-acylhydrazone moiety as potent antitumor agents
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A novel series of benzothiazole derivatives bearing the ortho-hydroxy-N-acylhydrazone moiety were designed, synthesized, and evaluated for their procaspase-3 kinase activation activities and antiproliferative activities against five cancer cell lines (NCI-H226, SK-N-SH, HT29, MKN-45, and MDA-MB-231). Most target compounds showed moderate to excellent cytotoxic activity against all five tested cancer lines. The most promising compound 18e (procaspase-3 EC50- 0.31μM) with IC50 values ranging from 0.24 to 0.92 μM against all tested cell lines was 4.24-12.2 times more active than PAC-1 (procaspase-3 EC50 - 0.41 μM). Structure-activity relationship studies indicated that the phenyl group on the 2-hydroxyphenyl ring (moiety A) was critical for pharmacological activity in vitro. In addition, introduction of a benzyloxyl group on moiety A and a mono-electron-withdrawing group at the 4-position of the benzyloxyl group were more favorable for antitumor activity. Moreover, reduction of the electron density in the phenyl ring of the benzyloxy group led to a dramatic decrease in the procaspase-3 kinase activation activity. -
- Ma, Junjie,Zhang, Guangyan,Han, Xiaoqi,Bao, Guanglong,Wang, Lihui,Zhai, Xin,Gong, Ping
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p. 936 - 949
(2015/02/19)
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- Selective reduction of amides to amines by boronic acid catalyzed hydrosilylation
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Not a 'B'ore! Benzothiophene-based boronic acids catalyze the reduction of tertiary, secondary, and primary amides in the presence of a hydrosilane. The reaction demonstrates good functional-group tolerance. Copyright
- Li, Yuehui,Molina De La Torre, Jesus A.,Grabow, Kathleen,Bentrup, Ursula,Junge, Kathrin,Zhou, Shaolin,Brueckner, Angelika,Beller, Matthias
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p. 11577 - 11580
(2013/11/06)
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- Discovery and structure-activity relationships of pyrrolone antimalarials
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In the pursuit of new antimalarial leads, a phenotypic screening of various commercially sourced compound libraries was undertaken by the World Health Organisation Programme for Research and Training in Tropical Diseases (WHO-TDR). We report here the detailed characterization of one of the hits from this process, TDR32750 (8a), which showed potent activity against Plasmodium falciparum K1 (EC50 ~ 9 nM), good selectivity (>2000-fold) compared to a mammalian cell line (L6), and significant activity against a rodent model of malaria when administered intraperitoneally. Structure-activity relationship studies have indicated ways in which the molecule could be optimized. This compound represents an exciting start point for a drug discovery program for the development of a novel antimalarial.
- Murugesan, Dinakaran,Mital, Alka,Kaiser, Marcel,Shackleford, David M.,Morizzi, Julia,Katneni, Kasiram,Campbell, Michael,Hudson, Alan,Charman, Susan A.,Yeates, Clive,Gilbert, Ian H.
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supporting information
p. 2975 - 2990
(2013/05/23)
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- Zinc-catalyzed chemoselective reduction of tertiary and secondary amides to amines
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General and convenient procedures for the catalytic hydrosilylation of secondary and tertiary amides under mild conditions have been developed. In the presence of inexpensive zinc catalysts, tertiary amides are easily reduced by applying monosilanes. Key to success for the reduction of the secondary amides is the use of zinc triflate and disilanes with dual Si-H moieties. The presented hydrosilylations proceed with excellent chemoselectivity in the presence of sensitive ester, nitro, azo, nitrile, olefins, and other functional groups, thus making the method attractive for organic synthesis.
- Das, Shoubhik,Addis, Daniele,Junge, Kathrin,Beller, Matthias
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experimental part
p. 12186 - 12192
(2011/11/07)
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- HETEROCYCLIC DERIVATIVE HAVING INHIBITORY ACTIVITY ON TYPE-I 11 -HYDROXYSTEROID DEHYDROGENASE
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Disclosed is a compound which is useful as an 11β-hydroxysteroid dehydrogenase type 1 inhibitor. A compound represented by the formula: its pharmaceutically acceptable salt, or a solvate thereof, wherein X is O or S, a broken line and a wavy line represent the presence or the absence of a bond, (i) when a broken line represents the presence of a bond, a wavy line represents the absence of a bond, R2 and R3 are each independently hydrogen, halogen, cyano, hydroxy, carboxy, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl or the like, (ii) when a broken line represents the absence of a bond, a wavy line represents the presence of a bond, R1 and R4 are each independently hydrogen, halogen or the like, R2 and R3 are each independently hydrogen, halogen, cyano, hydroxy, carboxy, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl or the like, and R5 and R6 are each independently hydrogen, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl or the like.
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Page/Page column 124
(2010/08/07)
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- Zinc-catalyzed reduction of amides: Unprecedented selectivity and functional group tolerance
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(Chemical Equation Presented) A novel zinc-catalyzed reduction of tertiary amides was developed. This system shows remarkable chemoselectivity and substrate scope tolerating ester, ether, nitro, cyano, azo, and keto substituents. Copyright
- Das, Shoubhik,Addis, Daniele,Zhou, Shaolin,Junge, Kathrin,Beller, Matthias
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supporting information; experimental part
p. 1770 - 1771
(2010/04/25)
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- Practical access to amines by platinum-catalyzed reduction of carboxamides with hydrosilanes: Synergy of dual Si-H groups leads to high efficiency and selectivity
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The synergetic effect of two Si-H groups leads to efficient reduction of carboxamides to amines by platinum catalysts under mild conditions. The rate of the reaction is dependent on the distance of two Si-H groups; 1,1,3,3-tetramethyldisiloxane (TMDS) and 1,2-bis(dimethylsilyl)benzene are found to be an effective reducing reagent. The reduction of amides having other reducible functional groups such as NO2, CO2R, CN, CdC, Cl, and Br moieties proceeds with these groups remaining intact, providing a reliable method for the access to functionalized amine derivatives. The platinum-catalyzed reduction of amides with polymethylhydrosiloxane (PMHS) also proceeds under mild conditions. The reaction is accompanied by automatic removal of both platinum and silicon wastes as insoluble silicone resin, and the product is obtained by simple extraction. A mechanism involving double oxidative addition of TMDS to a platinum center is discussed.
- Hanada, Shiori,Tsutsumi, Emi,Motoyama, Yukihiro,Nagashima, Hideo
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supporting information; experimental part
p. 15032 - 15040
(2010/01/29)
-
- Design, synthesis, and evaluation of indolinones as triple angiokinase inhibitors and the discovery of a highly specific 6-methoxycarbonyl-substituted indolinone (BIBF 1120)
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Inhibition of tumor angiogenesis through blockade of the vascular endothelial growth factor (VEGF) signaling pathway is a newtreatment modality in oncology. Preclinical findings suggest that blockade of additional pro-angiogenic kinases, such as fibroblast and platelet-derived growth factor receptors (FGFR and PDGFR), may improve the efficacy of pharmacological cancer treatment. Indolinones substituted in position 6 were identified as selective inhibitors of VEGF-, PDGF-, and FGF-receptor kinases. In particular, 6-methoxycarbonyl-substituted indolinones showed a highly favorable selectivity profile. Optimization identified potent inhibitors of VEGF-related endothelial cell proliferation with additional efficacy on pericyctes and smooth muscle cells. In contrast, no direct inhibition of tumor cell proliferation was observed. Compounds 2 (BIBF 1000) and 3 (BIBF 1120) are orally available and display encouraging efficacy in in vivo tumor models while being well tolerated. The triple angiokinase inhibitor 3 is currently in phase III clinical trials for the treatment of nonsmall cell lung cancer.
- Roth, Gerald J.,Heckel, Armin,Colbatzky, Florian,Handschuh, Sandra,Kley, J?rg,Lehmann-Lintz, Thorsten,Lotz, Ralf,Tontsch-Grunt, Ulrike,Walter, Rainer,Hilberg, Frank
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experimental part
p. 4466 - 4480
(2010/03/02)
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- NEW COMPOUNDS
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The present invention encompassescompounds of general formula (1) wherein R1 to R4 , X and n are defined as in claim 1, which are suitable for the treatment of ailments characterised byexcessive or abnormal cell proliferation, and the use thereof for preparing a medicament having the above-mentioned properties.
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Page/Page column 19
(2008/12/06)
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- INDOLINONE DERIVATIVES AND THEIR USE IN TREATING DISEASE-STATES SUCH AS CANCER
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The present invention encompasses compounds of general formula (1) wherein R1 to R4 are defined as in claim 1, which are suitable for the treatment of diseases characterised by excessive or abnormal cell proliferation, and their use for preparing a pharmaceutical composition having the above-mentioned properties.
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Page/Page column 23
(2009/01/24)
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- Lead identification to generate isoquinolinedione inhibitors of insulin-like growth factor receptor (IGF-1R) for potential use in cancer treatment
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Insulin-like growth factor receptor (IGF-1R) is a growth factor receptor tyrosine kinase that acts as a critical mediator of cell proliferation and survival. This receptor is over-expressed or activated in tumor cells and is emerging as a novel target in cancer therapy. Efforts in our "Hit to Lead" group have generated a novel series of submicromolar IGF-1R inhibitors based on a isoquinolinedione template originating from a Lance enzyme HTS screen. Chemical triage and parallel synthesis incorporating focused library arrays were instrumental in moving these investigations through the Wyeth exploratory medicinal chemistry process. The strategies, synthesis, and SAR behind this interesting kinase scaffold will be described.
- Mayer, Scott C.,Banker, Annette L.,Boschelli, Frank,Di, Li,Johnson, Mark,Kenny, Cynthia Hess,Krishnamurthy, Girija,Kutterer, Kristina,Moy, Franklin,Petusky, Susan,Ravi, Malini,Tkach, Diane,Tsou, Hwei-Ru,Xu, Weixin
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scheme or table
p. 3641 - 3645
(2009/04/06)
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- Mono-nitration of aromatic compounds via nitrate salts
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A method of nitrating a compound selected from the group consisting of is provided.
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Page/Page column 1; 4
(2008/06/13)
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- Synthesis of quaternary salts of ammonia from cinnamic acids and their plant growth retardant activity
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A series of N,N-dimethyl-N-benzyl ammonium chloride cinnamides (1a-e) were prepared from the reaction between cinnamyl chlorides (4a-e) and N,N-dimethylphenylmethanamines (6a-e). These salts were tested for their biological activity on germination, seedling growth and adventitious root formation on hypocotyl cuttings of Vigina radiata (SML-668) and were found to be markedly inhibit germination and seedling growth of mungbean seeds under laboratory conditions.
- Sharma,Kaur, Sukhvir
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p. 612 - 614
(2008/12/20)
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- Mono-nitration of aromatic compounds via their nitric acid salts
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Aromatic compounds bearing a basic nitrogen atom can be converted to the corresponding nitric acid salts. Mono-nitration of the compounds can be carried out by adding a dichloromethane solution of the salts to sulfuric acid, or by adding acetyl chloride (or trifluoroacetic anhydride) to a dichloromethane solution of the salts. This protocol provides, among other benefits, the most convenient and reliable way for the prevention of over-/under-nitration and is especially suitable for scale-up.
- Zhang, Pingsheng,Cedilote, Miall,Cleary, Thomas P.,Pierce, Michael E.
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p. 8659 - 8664
(2008/03/30)
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- Thiazolopyridine kinase inhibitors
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The present invention is directed to novel thiazolopyridines, pharmaceutical compositions thereof, and the use thereof as inhibitors of ATP-protein kinase interactions. The thiazolopyridine compounds have the following Formula (I):
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Page/Page column 30
(2010/10/20)
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- ANTIFUNGAL AGENTS
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Compounds of formula (I), and pharmaceutically acceptable salts thereof, may be used in therapy, for example as antifungal agents: (I) wherein: Rl, R2, R3, R4, R5, R6, R7, X and X1 are as defined herein. Certain compounds of formula (I) are also provided. Compounds of formula (T), and agriculturally acceptable salts thereof, may also be used as agricultural fungicides.
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Page/Page column 58
(2008/06/13)
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- Substituted indolines which inhibit receptor tyrosine kinases
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Indolinones of the formula having an inhibitory effect on receptor tyrosine kinases and cyclin/CDK complexes, as well as on the proliferation of endothelial cells and various tumor cells. Exemplary are: (a) 3-Z-[1-(4-(piperidin-1-yl-methyl)-anilino)-1-phenyl-methylene]-6-ethoxycarbonyl-2-indolinone, (b) 3-Z-[(1-(4-(piperidin-1-yl-methyl)-anilino)-1-phenyl-methylene]-6-carbamoyl-2-indolinone, and (c) 3-Z-[1-(4-(piperidin-1-yl-methyl)-anilino)-1-phenyl-methylene]-6-metboxycarbonyl-2-indolinone.
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Page column 41
(2008/06/13)
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- Antibacterial activity of glycine betaine analogues: Involvement of osmoporters
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Glycine betaine (GB) analogues were obtained using solid phase organic synthesis and assayed for their toxic activity against 15 Gram positive and Gram negative bacteria. Four benzyl derivatives of GB were selected to determine their effect on bacterial g
- Cosquer, Anne,Ficamos, Morgane,Jebbar, Mohamed,Corbel, Jean-Charles,Choquet, Gwenaelle,Fontenelle, Catherine,Uriac, Philippe,Bernard, Theophile
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p. 2061 - 2065
(2007/10/03)
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- Lewis acid-catalyzed reductive amination of carbonyl compounds with aminohydrosilanes
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The TiCl4-catalyzed reaction of aromatic carbonyl compounds with (dialkylamino)dimethylsilanes gave tertiary amines in moderate to high yields. The reductive amination of aliphatic aldehydes was effectively catalyzed by ZnI2. Methyl
- Miura,Ootsuka,Suda,Nishikori,Hosomi
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p. 1617 - 1619
(2007/10/03)
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- Substituted indolinones with kinase inhibitory activity
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Substituted indolinones of general formula having effect on various kinases and cycline/CDK complexes and on the proliferation of various tumour cells. Exemplary compounds are: 3-Z-[1-(4-(N-Benzyl-N-methyl-aminomethyl)-phenylamino)-1-methyl-methylene]-5-a
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- Indolinones having kinase inhibitory activity
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The present invention relates to substituted indolinones of general formula [Figure] wherein R1 to R5, and X are defined as in claim 1, the isomers thereof and the salts thereof, particularly the physiologically acceptable salts thereof which have valuable pharmacological properties, particularly an inhibitory effect on various kinases and cycline/CDK complexes and on the proliferation of various tumour cells, pharmaceutical compositions containing these (compounds, their use and processes for preparing them.
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- Anilide derivative, production and use thereof
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This invention is to provide a compound of the formula: wherein R1 is an optionally substituted 5- to 6-membered ring: C is a divalent group of the formula: wherein the ring A is an optionally substituted 5- to 6-membered aromatic ring, X is an optionally substituted C, N or O atom, and the ring B is an optionally substituted 5- to 7-membered ring; Z is a chemical bond or a divalent group; R2 is (1) an optionally substituted amino group in which a nitrogen atom may form a quaternary ammonium, etc., or a salt thereof, which is useful for antagonizing MCP-1 receptor.
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- A high throughput synthesis of N,N-dimethyl tertiary amines
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N,N-dimethyl tertiary amines are obtained in high yields by titanium(IV) isopropoxide mediated reductive amination of carbonyl compounds with a commercially available methanol solution of dimethylamine.
- Bhattacharyya, Sukanta
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p. 2001 - 2008
(2007/10/03)
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- Thermodynamics, kinetics, and mechanism of exchange of cyclopalladated ligands
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The exchange between cyclopalladated complexes and free ligands has been studied in acetic acid. An equilibrium study of the system based on N,N-dimethylbenzylamine derivatives [PdX(YZC6H2CH2NMe2)]2 + 2C6D5CD2NMe2 ? [PdX-(C6D4CD2NMe2)]2 + 2YZC6H2DCH2NMe2 (K1) has revealed that Pd(II) binds preferably with the electron-poorest ligand at equilibrium; K1 is 114, 0.59, 0.125, 0.008, and 0.0034 for 4-Y (5-Z) = MeO (MeO), H (Me), H (H), H (Cl), and H (NO2), respectively, at 55°C in D3CCOOD/CDCl3, X = MeCO2-. A procedure for regioselective ortho palladation of bifunctional derivatives such as 1-(3,4-dimethoxyphenyl)-2-methyl-3-(4-nitrophenyl)-2-azapropane (7) is put forward. In aprotic chloroform, Pd(II) acetate metalates the electron-rich ring of 7 to yield 8a, but the electron-poor ring is ortho palladated in acetic acid to yield 9a. A dissociative exchange mechanism is proposed on the basis of a kinetic study of reactions between [PdX-(YZC6H2CH2NMe2)]2 and 2-phenylpyridine or azobenzene to afford the corresponding cyclopalladated complexes. Preequilibrium measurements have indicated that in the former case the reactive species are monomers formed via acetate-bridge cleavage by 2-phenylpyridine but in the latter case the complexes react as dimers. Despite this, all of the reactions are first order in complex and zero order in entering ligand. The rate constants of the 2-phenylpyridine case at 75°C are (104k) 12.6, 3.9, 2.35, 2.6, 0.44, and 0.0225 s-1 for 4-Y (5-Z) = MeO (MeO), H (Me), H (H), H (MeO), H (Cl), and H (NO2), respectively. On the basis of substituent and solvent kinetics isotope effects, values of activation parameters, and data obtained previously, it has been suggested that cleavage of the Pd-N bond of the leaving ligand occurs first, followed by acidolysis of the Pd-C bond. Both steps can contribute to the overall rate. The two are followed by the rapid activation of the C-H bond of the incoming ligand. Reasons for the pseudonucleophilic behavior of Pd(II) toward C-H bonds of benzylamines in acetic acid have been evaluated on the basis of the proposed mechanism.
- Ryabov, Alexander D.
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p. 1252 - 1260
(2008/10/08)
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- Relative Conjugative Abilities of Three-Membered Ring Heterocycles with Benzene Based on 13C and 15N NMR
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The conjugative ability of various three-membered rings with benzene was investigated by observing the sensitivity of β-carbon 13C chemical shifts to para substituents.These Hammett ρ values were 2.0, 1.5, 1.0, and 0.9 ppm for arylcyclopropanes, N-methyl-2-arylaziridines, phenyloxiranes, and N,N-dimethyl-2-arylaziridinium fluorosulfonates, respectively.These values were intermediate to ones for para-substituted styrenes (6.5 ppm) and ethylbenzenes (-0.9 ppm), model compounds which were taken to represent extremes of conjugative ability.Similar results were found for 15N chemical shifts of trans-3-aryl-oxaziridines, which had a slope of 2.1 ppm, intermediate to those for benzylimines (20.2 ppm) and benzylamines (-1.3 ppm).The order of conjugative ability, which decreases with increasing electronegativity of the hetero group, could not be explained by hybridization changes based on comparing open chain analoques with the above compounds or by conformational factors.The trend can, however, be interpreted qualitatively by perturbation theory which shows that more electronegative hetero groups decrease the extent of interaction between aryl-? and cyclopropane orbitals as well as cross ring conjugation.
- Crist, DeLanson R.,Jordan, Guy J.,Moore, Donald W.,Hashmall, Joseph A.,Borsetti, Arnold P.,Turujman, Saleh A.
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p. 4136 - 4142
(2007/10/02)
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- A convenient method for the selective reduction of amides to amines
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A variety of amides have been selectively reduced to the corresponding amines via conversion to their thioamides and treatment with triethyloxonium tetrafluoroborate followed by sodium borohydride. This procedure is compatible with isolated and conjugated double bonds, esters, intro groups, and sulfonamides.
- Raucher, Stanley,Klein, Peter
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p. 4061 - 4064
(2007/10/02)
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