- Transition metal- And light-free radical borylation of alkyl bromides and iodides using silane
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We report operationally simple and neutral conditions for borylation of alkyl bromides and iodides to alkyl boronic esters under transition metal- and light-free conditions. A series of substrates with a wide range of functional groups were effectively transformed into the borylation products in moderate to good yields. Mechanistic studies, including radical clock experiments and DFT calculations, gave detailed insight into the radical borylation process.
- Mo, Fanyang,Sun, Beiqi,Zheng, Sihan
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supporting information
p. 5674 - 5677
(2021/06/16)
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- Pyrimidine-2,4-diamines as antiplasmodial antifolates
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Two series of substituted pyrimidine-2,4-diamines with a flexible side chain at either the 5- or 6-position of the pyrimdine ring were designed as potential inhibitors of P. falciparum dihydrofolate reductase (DHFR). The compounds were synthesised and eva
- Seanego, Tswene D.,Klein, Hanna F.,Jansen van Vuuren, Natasha C.,Van Zyl, Robyn L.,Rousseau, Amanda L.
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p. 344 - 361
(2020/10/30)
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- Discovery of Carboline Derivatives as Potent Antifungal Agents for the Treatment of Cryptococcal Meningitis
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Clinical treatment of cryptococcal meningitis (CM) remains a significant challenge because of the lack of effective and safe drug therapies. Developing novel CM therapeutic agents with novel chemical scaffolds and new modes of action is of great importanc
- Tu, Jie,Li, Zhuang,Jiang, Yanjuan,Ji, Changjin,Han, Guiyan,Wang, Yan,Liu, Na,Sheng, Chunquan
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p. 2376 - 2389
(2019/03/07)
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- Preparation method of cisapride key intermediate
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The invention provides a preparation method of a cisapride key intermediate. The preparation method includes the steps of adopting 3-pyridine as an initial raw material, 3-methoxypyridine is synthesized through nucleophilic substitution, 4-nitryl-3-methoxypyridine is prepared through a nitration reaction, a 4-nitryl-3-methoxyl-N-(3-(4-fluorophenoxy)propyl) quaternized pyridinium is prepared through quaternization, and the cisapride key intermediate, namely (cis)-N-(3-(4-fluorophenoxy)propyl)-4-amino-3-methoxy piperidine, is prepared through catalytic hydrogenation at last. The preparation method has the advantages of being low in cost, easy to operate and the like.
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Paragraph 0026; 0029; 0032; 0035; 0038; 0041; 0044; 0045
(2019/01/06)
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- Design, synthesis, docking studies and biological evaluation of novel dihydro-1,3,5-triazines as human DHFR inhibitors
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A novel series of dihydro-1,3,5-triazine derivatives bearing a heteroatom spiro-ring were designed and synthesized on the basis of molecular flexible docking work, and their biological activities were evaluated. Compounds A2, A5, B1 and B3 showed potent human dihydrofolate reductase (hDHFR) inhibitory activity with IC50values of 7.46 nM, 3.72 nM, 6.46 nM, 4.08 nM, versus reference drug methotrexate (MTX). From the molecular docking result we concluded that the conformation space generated by deformation of the flexible residue Phe31 is favorable for the binding of the spiro-ring, and inserting heteroatom into spiro ring might increase the binding affinity. There were 24 compounds with broadspectrum antiproliferative activity against several tumor cell lines (HCT116, A549, HL-60, HepG2 and MDA-MB-231) with IC50values ranging from 0.79 to 0.001 μM. The antitumor activity in?vivo of compound A2 was determined in a human alveolar basal epithelial cell line A549 xenograft model. This study offered novel anticancer agents with high inhibitory activity that target hDHFR and have a binding mode of the novel molecular scaffold with hDHFR. This provides potent support for further development of novel hDHFR inhibitors.
- Zhou, Xiaotian,Lin, Kuaile,Ma, Xiang,Chui, Wai-Keung,Zhou, Weicheng
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p. 1279 - 1288
(2016/11/29)
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- Synthesis of new compounds with promising antiviral properties against group A and B Human Rhinoviruses
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The human common cold, which is a benign disease caused by the Rhinoviruses, generally receives palliative symptomatic treatments, since no specific therapy against any of these viruses currently exists. In this work, some original synthetic compounds wer
- Bernard, Angela M.,Cabiddu, Maria G.,De Montis, Stefania,Mura, Roberto,Pompei, Raffaello
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p. 4061 - 4066
(2014/08/18)
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- Novel Carboline Derivatives as Potent Antifungal Lead Compounds: Design, Synthesis, and Biological Evaluation
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A series of novel antifungal carboline derivatives was designed and synthesized, which showed broad-spectrum antifungal activity. Particularly, compound C38 showed comparable in vitro antifungal activity to fluconazole without toxicity to human embryonic lung cells. It also exhibited good fungicidal activity against both fluconazole-sensitive and -resistant Candida albicans cells and had potent inhibition activity against Candida albicans biofilm formation and hyphal growth. Moreover, C38 showed good synergistic antifungal activity in combination with fluconazole (FLC) against FLC-resistant Candida species. Preliminary mechanism studies revealed that C38 might act by inhibiting the synthesis of fungal cell wall.
- Wang, Shengzheng,Wang, Yan,Liu, Wei,Liu, Na,Zhang, Yongqiang,Dong, Guoqiang,Liu, Yang,Li, Zhengang,He, Xiaomeng,Miao, Zhenyuan,Yao, Jianzhong,Li, Jian,Zhang, Wannian,Sheng, Chunquan
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p. 506 - 511
(2014/06/09)
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- Synthesis and biological evaluation of vinyl ether-containing azole derivatives as inhibitors of Trichophyton rubrum
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In an attempt to search for many target compounds with excellent activities, a series of vinyl ether-containing azole derivatives were designed, synthesized, and evaluated as antifungal agents. Results of preliminary antifungal tests against Trichophyton rubrum in vitro indicated that most of the synthesized compounds showed excellent activities. In comparison with fluconazole, itraconazole, voriconazole, omoconazole and amphotericin B, several compounds (such as 7d, 7g and 7h) exhibited more potent inhibitory activities, suggesting that they were promising leads for the development of novel antifungal agents.
- Wang, Lulu,Yang, Wenge,Wang, Kai,Zhu, Jing,Shen, Fei,Hu, Yonghong
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scheme or table
p. 4887 - 4890
(2012/08/07)
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- Antifolate and antiproliferative activity of 6,8,10-triazaspiro[4.5]deca-6,8-dienes and 1,3,5-triazaspiro[5.5]undeca-1,3-dienes
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Two series of triazaspiroalkanedienes, bearing a substituted phenoxy propyloxy side chain, were identified as potent mammalian DHFR inhibitors. One series has a 6,5-spiro bicyclic ring system and the other series has a 6,6-spiro bicyclic system. Both seri
- Ma, Xiang,Chui, Wai-Keung
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body text
p. 737 - 743
(2010/04/29)
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- Improved model of lanosterol 14α-demethylase by ligand-supported homology modeling: Validation by virtual screening and azole optimization
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Lanosterol 14α-demethylase (CYP51) is an important target for antifungal drugs. An improved three-dimensional model of CYP51 from Candida albicans (CACYP51) was constructed by ligand-supported homology modeling and molecular dynamics simulations. The accuracy of the constructed model was evaluated by its performance in a small-scale virtual screen. The results show that known CYP51 inhibitors were efficiently discriminated by the model, and it performed better than our previous CACYP51 model. The active site of CACYP51 was characterized by multiple copy simultaneous search (MCSS) calculations. On the basis of the MCSS results, a series of novel azoles were designed and synthesized, and they showed good in vitro antifungal activity with a broad spectrum. The MIC80 value of four of these compounds against C. albicans is 0.001 μgmL-1, indicating that they are promising leads for the discovery of novel antifungal agents.
- Sheng, Chunquan,Wang, Wenya,Che, Xiaoying,Dong, Guoqiang,Wang, Shengzheng,Ji, Haitao,Miao, Zhenyuan,Yao, Jianzhong,Zhang, Wannian
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experimental part
p. 390 - 397
(2010/11/18)
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- New azoles with potent antifungal activity: Design, synthesis and molecular docking
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In response to the urgent need for novel antifungal agents with improved activity and broader spectrum, computer modeling was used to rational design novel antifungal azoles. On the basis of the active site of lanosterol 14α-demethylase from Candida albicans (CACYP51), a series of new azoles with substituted-phenoxypropyl piperazine side chains were rational designed and synthesized. In vitro antifungal activity assay indicates that the new azoles show good activity against most of the tested pathogenic fungi. Interestingly, the designed compounds are also active against an azole-resistant clinical strain. Compared to fluconazole and itraconazole, several compounds (such as 12i, 12j and 12n) show higher antifungal activity and broader spectrum, which are promising leads for the development of novel antifungal agents.
- Che, Xiaoying,Sheng, Chunquan,Wang, Wenya,Cao, Yongbing,Xu, Yulan,Ji, Haitao,Dong, Guoqiang,Miao, Zhenyuan,Yao, Jianzhong,Zhang, Wannian
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scheme or table
p. 4218 - 4226
(2009/12/09)
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- Muscarinic acetylcholine receptor antagonists
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Muscarinic Acetylcholine Receptor Antagonists and methods of using them are provided.
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Page/Page column 17
(2008/06/13)
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- Synthesis and pharmacological evaluation of N-acyl-1,2,3,4- tetrahydroisoquinoline derivatives as novel specific bradycardic agents
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A series of N-acyl-1,2,3,4-tetrahydroisoquinoline derivatives were synthesized and evaluated for their bradycardic activities in isolated guinea pig right atria and in urethane-anesthetized rats. These efforts resulted in identification of the compound 8a
- Kubota, Hideki,Watanabe, Toshihiro,Kakefuda, Akio,Masuda, Noriyuki,Wada, Kouichi,Ishii, Noe,Sakamoto, Shuichi,Tsukamoto, Shinichi
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p. 871 - 882
(2007/10/03)
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- Synthesis and Pharmacological Evaluation of 1-Oxo-2-(3-piperidyl)-1,2,3,4-tetrahydroisoquinolines and Related Analogues as a New Class of Specific Bradycardic Agents Possessing If Channel Inhibitory Activity
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A series of 1-oxo-2-(3-piperidyl)-1,2,3,4-tetrahydroisoquinolines and related analogues were prepared and evaluated for their bradycardic activities in isolated right atrium and in anesthetized rats. (± )-6,7-Dimethoxy-2-{1- [3-(3,4-methylenedioxyphenoxy)propyl]-3-piperidyl}-1,2,3, 4-tetrahydroisoquinoline (4) was chosen as a lead, and structural modifications were performed on the tetrahydroisoquinoline ring and the terminal aromatic ring. The modifications on the tetrahydroisoquinoline ring revealed that the 1-oxo-1,2,3,4-tetrahydroisoquinoline ring system was optimum structure for both in vitro potency and in vivo efficacy. Furthermore, methoxy, ethoxy, and methoxycarbonyl groups were identified as preferable substituents on the terminal aromatic ring. One of the 1-oxo-1,2,3,4-tetrahydroisoquinoline derivatives, (R)-10a, was further evaluated for its bradycardic activity and inhibitory activity against If currents. Compound (R)-10a demonstrated potent bradycardic activity in rats with minimal influence on blood pressure after oral administration. The compound also showed inhibition of If currents (IC50 = 0.32 μM) in guinea pig pacemaker cells.
- Kubota, Hideki,Kakefuda, Akio,Watanabe, Toshihiro,Ishii, Noe,Wada, Koichi,Masuda, Noriyuki,Sakamoto, Shuichi,Tsukamoto, Shin-ichi
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p. 4728 - 4740
(2007/10/03)
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- Indoles
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A 1,4-substituted cyclic amine derivative represented by the following formula or a pharmacologically acceptable salt thereof: wherein A, B, C, D, T, Y, and Z each represent a methine or a nitrogen linkage; R1, R2, R3, R4, and R5 each represent a substituent; n represents 0 or an integer of 1 to 3; m represents 0 or an integer of 1 to 6; and p represents an integer of 1 to 3. The compounds have serotonin antagonism. They are therefore clinically useful as medicaments, in particular, for treating, ameliorating, and preventing spastic paralysis. They are also useful as central muscle relaxants for ameliorating myotonia.
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- Phenoxypropoxybiguanides, prodrugs of DHFR-inhibiting diaminotriazine antimalarials
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A total of 34 analogues of the biguanide PS-15 (5s), a prodrug of the diaminotriazine WR-99210 (8s), have been prepared. Several of them, such as 5b (PS-33) and 5m (PS-26), maintain or exceed the in vivo activity of PS-15 while not requiring the use of highly regulated starting materials. The putative diaminotriazine metabolites of these new analogues (compounds 8) have also been prepared and shown to maintain the activity against resistant P. falciparum strains. The structure-activity relationships of biguanides 5 and putative metabolites 8 are discussed.
- Jensen,Ager,Bliss,Canfield,Kotecka,Rieckmann,Terpinski,Jacobus
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p. 3925 - 3931
(2007/10/03)
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- NOVEL THIAZOLIDONE-2 DERIVATIVES, 4-DIKETONE SUBSTITUTED, METHOD FOR OBTAINING THEM AND PHARMACEUTICAL COMPOSITONS CONTAINING SAME
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The present invention relates to the field of chemistry and more particularly to that of therapeutic chemistry. The subject of the present invention is more precisely new 5-phenoxyalkyl-2,4-thiazolidinediones of general formula I: in which A represents a
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- N-(isoquinolin-5-ylsulphonyl) azacycloalkanes
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Compounds of formula (I): STR1 wherein R1, R2, U, X, Y, Z, n, m, p and r are as defined in the description, and medicaments containing the same.
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- 5-isoquinolinesulfonamides
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Compounds of formula (I): STR1 with R1, R2, U, X, Y, Z, n, m, p and r as defined in the description. Medicinal products.
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- Alkenoic acid derivatives
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An alkenoic acid derivative of the formula STR1 in which X and Y are identical or different and represent sulfur, sulfoxide, sulfone, an alkylene chain, --SCH2 --, or oxygen or a direct bond, W represents --CH=CH-- or --CH2 --CH2 --, o represents a number 1 to 5, A and B are identical or different and represent carboxyl, carboxymethylene, tetrazolyl or tetrazolylmethylene, or --CO2 R9 or --CH2 CO2 R9 or --CONR10 R11 or nitrile n represents a number 1 to 10, m represents a number 0 to 7, T and Z are identical or different and represent oxygen or a direct bond and R2, R3, R8 are identical or different and represent hydrogen, alkyl, alkoxy, halogen, trifluoromethyl, trifluoromethoxy, cyano or nitro and R9 is lower alkyl and R10 and R11 are hydrogen, lower alkyl, alkylsulfonyl or arylsulfonyl or together are an alkylene chain to form a ring and pharmaceutically acceptable salts thereof. Such alkenoic acid derivatives are useful as leucotriene disease antagonists.
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- Synthesis of fluorine and iodine analogues of clorgyline and selective inhibition of monoamine oxidase A
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A series of fluorine and iodine analogues of clorgyline was synthesized and evaluated for inhibitory potency and selectivity toward monoamine oxidase A (MAO-A). Among them, N-[3-(2,4-dichloro-6-iodophenoxy)propyl]-N-methyl-2-propynylamine (3d), N-[3-(4-ch
- Ohmomo,Hirata,Murakami,Magata,Tanaka,Yokoyama
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p. 1038 - 1040
(2007/10/02)
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- 2,3-Dihydro-5-benzofuranols as antioxidant-based inhibitors of leukotriene biosynthesis
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The enzymes that catalyze the oxidative metabolism of arachidonic acid have provided fertile ground for the development of useful therapeutic agents for nearly a quarter century. Inhibitors of the enzyme cyclooxygenase prevent the formation of the prostag
- Hammond,Kopka,Zambias,Caldwell,Boger,Baker,Bach,Luell,MacIntyre
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p. 1006 - 1020
(2007/10/02)
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