- Discovery of 3-(thiophen/thiazole-2-ylthio)pyridine derivatives as multitarget anticancer agents
-
A series of novel 3-(thiophen/thiazole-2-ylthio)pyridine derivatives were designed and synthesized as IGF-1R tyrosine kinase inhibitors. All the target compounds were tested for their IGF-1R kinase inhibitory activities and cytotoxicities against five cancer cell lines (K562, Hep-G2, HCT-116, WSU-DLCL2, and A549). Although all these compounds exhibited moderate to potent cancer cell proliferation inhibitory activities (the most potent compound 43 showed IC50 value of 1.3 ± 0.9 μM against WSU-DLCL2 cell line), IGF-1R inhibition were not observed. In order to identify the exact target of these analogues, selected compounds were further screened for various kinases. The results indicated that this series of compounds may exert their anticancer activities through inhibiting various kinases including FGFR 3, EGFR, JAK, and RON. In addition, cell cycle analysis of compound 43 on Hep-G2 cells showed cell cycle arrest at G1/G0 phase. All the experiments validated the potential of 3-(thiophen/thiazole-2-ylthio)pyridine analogues as multi-target anticancer agents.
- Zhang, Jiankang,Xi, Jianjun,He, Ruoyu,Zhuang, Rangxiao,Kong, Limin,Fu, Liping,Zhao, Yanmei,Zhang, Chong,Zeng, Linghui,Lu, Jingyi,Tao, Rujia,Liu, Zhengmengtong,Zhu, Huajian,Liu, Shourong
-
-
Read Online
- Photochemical and DNA degradation studies on tenoxicam, lornoxicam, and their photolysis products
-
Tenoxicam and lornoxicam are nonsteroidal anti-inflammatory drugs, were subjected to photoirradiation at 254?nm led to the photodegradation of the pharmaceutical agents. Both, the isolated photodegradation products and the pharmaceutical agents were exami
- Elghamry, Ibrahim,El-Ayaan, Usama,Youssef, Magdy M.,Al-Shihry, Shar,Letzel, Matthias,Mattay, Jochen
-
-
Read Online
- Ag(I)-Catalyzed C-H Carboxylation of Thiophene Derivatives
-
CO2utilization is an attractive aspect as it allows the direct conversion of CO2into valuable chemicals. In this regard, direct incorporation of CO2into the C-H bond of heteroaromatic compounds is important due to the ubiquitous structural motifs of the heteroaromatic carboxylic acids. Herein, we report the Ag-catalyzed C-H carboxylation of thiophene derivatives. This new catalytic system involving a phosphine ligand and lithiumtert-butoxide enables the direct carboxylation of thiophenes under mild reaction conditions. Experimental studies revealed that the use oftert-butyl alkoxide is critical for the exergonic formation of an arylsilver intermediate, and the results were further supported by density functional theory calculations.
- Lee, Mijung,Hwang, Young Kyu,Kwak, Jaesung
-
supporting information
p. 3136 - 3144
(2021/09/30)
-
- BUMETANIDE DERIVATIVES FOR THE THERAPY OF HYPERHIDROSIS
-
The present invention relates to bumetanide derivatives of formula (I) as well as pharmaceutical compositions comprising these compounds for use in the treatment or prevention of diseases/disorders involving Na+- K+- 2CI- - cotransporters (NKCCs), and particularly for use in the treatment or prevention of hyperhidrosis.
- -
-
Page/Page column 168
(2019/10/30)
-
- Synthesis and anti-endoplasmic reticulum stress activity of N-substituted-2-arylcarbonylhydrazinecarbothioamides
-
Misfolded or unfolded proteins are accumulated in lumen of endoplasmic reticulum (ER) in ER stress condition. It has been implicated in many pathological conditions such as Alzheimer’s disease, diabetic retinopathy, atherosclerosis, β-cell apoptosis and lung inflammation. We found a series of N-substituted-2-arylcarbonylhydrazinecarbothioamides to potently decrease ER stress signal, showing up to almost 300-fold better activity than 1-hydroxynaphthoic acid and tauro-ursodesoxycholic acid, positive controls, respectively. Structure?activity relationship (SAR) study showed that 2-arylcarbonyl moiety is critical for the activity of the hydrazinecarbothioamide analogues and side chains tethering on thioamide moiety were relatively insensitive to the activity. Some analogues were found to consistently exert the potency under more physiologically relevant condition where ER stress was induced by palmitic acid. ER stress markers such as CHOP and phosphorylated eIF2α and PERK were accordingly decreased in western blotting upon treatment of compound 4h. Potential ER stress inhibitory activity and novel structures could provide a novel platform for new chemical chaperone and therapy for protein misfolding diseases.
- Choi, Hoon,Yun, Wheesahng,Lee, Jung-hun,Jang, Seoul,Park, Sang Won,Kim, Dong Hwan,Seon, Kyoung Pyo,Hyun, Jung-mi,Jeong, Kwiwan,Ku, Jin-mo,Nam, Tae-gyu
-
p. 2142 - 2152
(2019/11/03)
-
- Visible Light-Promoted Photocatalytic C-5 Carboxylation of 8-Aminoquinoline Amides and Sulfonamides via a Single Electron Transfer Pathway
-
An efficient photocatalytic method was developed for the remote C5-H bond carboxylation of 8-aminoquinoline amide and sulfonamide derivatives. This methodology uses in situ generated ?CBr3 radical as a carboxylation agent with alcohol and is further extended to a variety of arenes and heteroarenes to synthesize the desired carboxylated product in moderate-to-good yields. The reaction proceeding through a single electron transfer pathway was established by a control experiment, and a butylated hydroxytoluene-trapped aryl radical cation intermediate in high-resolution mass spectrometry was identified.
- Sen, Chiranjit,Sahoo, Tapan,Singh, Harshvardhan,Suresh, Eringathodi,Ghosh, Subhash Chandra
-
p. 9869 - 9896
(2019/08/20)
-
- A biocatalytic method for the chemoselective aerobic oxidation of aldehydes to carboxylic acids
-
Herein, we present a study on the oxidation of aldehydes to carboxylic acids using three recombinant aldehyde dehydrogenases (ALDHs). The ALDHs were used in purified form with a nicotinamide oxidase (NOx), which recycles the catalytic NAD+ at the expense of dioxygen (air at atmospheric pressure). The reaction was studied also with lyophilised whole cell as well as resting cell biocatalysts for more convenient practical application. The optimised biocatalytic oxidation runs in phosphate buffer at pH 8.5 and at 40 °C. From a set of sixty-one aliphatic, aryl-Aliphatic, benzylic, hetero-Aromatic and bicyclic aldehydes, fifty were converted with elevated yield (up to >99%). The exceptions were a few ortho-substituted benzaldehydes, bicyclic heteroaromatic aldehydes and 2-phenylpropanal. In all cases, the expected carboxylic acid was shown to be the only product (>99% chemoselectivity). Other oxidisable functionalities within the same molecule (e.g. hydroxyl, alkene, and heteroaromatic nitrogen or sulphur atoms) remained untouched. The reaction was scaled for the oxidation of 5-(hydroxymethyl)furfural (2 g), a bio-based starting material, to afford 5-(hydroxymethyl)furoic acid in 61% isolated yield. The new biocatalytic method avoids the use of toxic or unsafe oxidants, strong acids or bases, or undesired solvents. It shows applicability across a wide range of substrates, and retains perfect chemoselectivity. Alternative oxidisable groups were not converted, and other classical side-reactions (e.g. halogenation of unsaturated functionalities, Dakin-Type oxidation) did not occur. In comparison to other established enzymatic methods such as the use of oxidases (where the concomitant oxidation of alcohols and aldehydes is common), ALDHs offer greatly improved selectivity.
- Knaus, Tanja,Tseliou, Vasilis,Humphreys, Luke D.,Scrutton, Nigel S.,Mutti, Francesco G.
-
supporting information
p. 3931 - 3943
(2018/09/11)
-
- Biaryl pyridine deubiquitinating enzyme inhibitor as well as preparation method and application thereof
-
The invention designs and synthesizes a biaryl pyridine deubiquitinating enzyme inhibitor. The biaryl pyridine deubiquitinating enzyme inhibitor has the structure which is shown as a general formula (I). The biaryl pyridine deubiquitinating enzyme inhibit
- -
-
Paragraph 0137; 0138
(2018/05/01)
-
- Visible-Light-Mediated Radical Arylation of Anilines with Acceptor-Substituted (Hetero)aryl Halides
-
A visible-light-mediated, catalyst-free, direct (hetero)arylation of anilines with mild reaction conditions has been developed. The formation of a donor-acceptor complex between electron-withdrawing substituted (hetero)aryl halides and anilines allows, under blue LED irradiation, the synthesis of ortho and para (hetero)arylated anilines in moderate to good yields. The reaction has a high functional group tolerance. Spectroscopic studies confirmed the donor-acceptor complex formation between aniline and aryl halide.
- Marzo, Leyre,Wang, Shun,K?nig, Burkhard
-
supporting information
p. 5976 - 5979
(2017/11/10)
-
- Pyrazolo[1,5a]pyrimidines as a new class of FUSE binding protein 1 (FUBP1) inhibitors
-
The transcriptional regulator FUSE binding protein 1 (FUBP1) is aberrantly upregulated in various malignancies, fulfilling its oncogenic role by the deregulation of critical genes involved in cell cycle control and apoptosis regulation. Thus, the pharmaceutical inhibition of this protein would represent an encouraging novel targeted chemotherapy. Here, we demonstrate the identification and initial optimization of a pyrazolo[1,5a]pyrimidine-based FUBP1 inhibitor derived from medium throughput screening, which interferes with the binding of FUBP1 to its single stranded target DNA FUSE. We were able to generate a new class of FUBP1 interfering molecules with in vitro and biological activity. In biophysical assays, we could show that our best inhibitor, compound 6, potently inhibits the binding of FUBP1 to the FUSE sequence with an IC50value of 11.0 μM. Furthermore, hepatocellular carcinoma cells exhibited sensitivity towards the treatment with compound 6, resulting in reduced cell expansion and induction of cell death. Finally, we provide insights into the corresponding SAR landscape, leading to a prospective enhancement in potency and cellular efficacy.
- Hauck, Stefanie,Hiesinger, Kerstin,Khageh Hosseini, Sabrina,Achenbach, Janosch,Biondi, Ricardo M.,Proschak, Ewgenij,Z?rnig, Martin,Odadzic, Dalibor
-
p. 5717 - 5729
(2016/11/09)
-
- AFURESERTIB: Protein kinase B (PKB) inhibitor Oncolytic
-
The phosphatidylinositol 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) signaling pathway plays key roles in cellular proliferation and survival. Mutations and alterations in this signal transduction pathway have been described in a variety of solid and hematopoietic malignancies, which may contribute to perpetuation of the disease in a number of ways. Increasing interest in targeting particular facets of this signaling cascade has led to the development of a number of novel anticancer agents, including afuresertib (GSK-2110183), an orally bioavailable pan-inhibitor of the RAC-alpha serine/threonine protein kinase, also referred to as protein kinase B or proto-oncogene c-Akt. The present review summarizes the preclinical and pharmacological aspects of afuresertib and early clinical experience.
- Conkel,Benson
-
p. 541 - 546
(2014/12/11)
-
- CRYSTALLINE FORMS OF A FACTOR XA INHIBITOR
-
The present invention provides crystalline forms of a mesylate salt of the compound 5-chloro-N-((1-(4-(2-oxopyridin-1(2H)-yl)phenyl)-1H-imidazol-4-yl)methyl)thiophene-2-carboxamide and pharmaceutical compositions and methods thereof.
- -
-
Page/Page column 9
(2011/07/08)
-
- METHODS OF PREPARING FACTOR XA INHIBITORS AND SALTS THEREOF
-
The present invention provides for methods of preparing compounds of Formula I or a salt of the compound or a hydrate of the compound or salt thereof that are factor Xa inhibitors. Specifically the present invention provides a method of preparing the comp
- -
-
Page/Page column 18
(2011/07/06)
-
- SALTS AND CRYSTALLINE FORMS OF A FACTOR XA INHIBITOR
-
The present invention provides salts and crystalline forms of the compound 5-chloro-N-((1-(4-(2-oxopyridin-1(2H)-yl)phenyl)-1H-imidazol-4-yl)methyl)thiophene-2-carboxamide, and pharmaceutical compositions and method of use thereof.
- -
-
Page/Page column 31
(2011/08/03)
-
- Synthesis of 2-thiophenecarboxylic and 2,5-thiophenedicarboxylic acid esters via the reaction of thiophenes with the CCl4-ROH reagent in the presence of vanadium, iron, and molybdenum catalysts
-
2-Thiophenecarboxylic and 2,5-thiohenedicarboxylic acid esters were synthesized via the reaction of thiophene with the CCl4-ROH-catalyst system, with a total yield of 44-85%. A possible reaction scheme includes the successive steps of alkylation of thiophene with carbon tetrachloride, leading to 2-trichloromethylthiophene, and alcoholysis of the product giving the corresponding 2-thiophenecarboxylate. The best catalysts for this reaction are VO(acac)2, Fe(acac)3, and Mo(CO)6.
- Khusnutdinov,Shchadneva,Baiguzina,Mukminov,Mayakova,Smirnov,Dzhemilev
-
experimental part
p. 471 - 478
(2010/03/31)
-
- FACTOR XA INHIBITORS
-
The present invention is directed to compounds represented by Formula I and pharmaceutically acceptable salts, solvates, hydrates, and prodrugs thereof which are inhibitors of Factor Xa. The present invention is also directed to and intermediates used in making such compounds, pharmaceutical compositions containing such compounds, methods to prevent or treat a number of conditions characterized by undesired thrombosis and methods of inhibiting the coagulation of a blood sample.
- -
-
Page/Page column 77
(2008/06/13)
-
- 5-5-MEMBERED FUSED HETEROCYCLIC COMPOUND AND USE THEREOF AS HCV POLYMERASE INHIBITOR
-
The present invention relates to a fused ring compound represented by the following formula [I] wherein each symbol is as defined in the specification, or a pharmaceutically acceptable a salt thereof, and a hepatitis C virus (HCV) polymerase inhibitor and
- -
-
Page/Page column 122
(2008/06/13)
-
- Synthesis and antitumour activity of new derivatives of flavone-8- acetic acid (FAA). Part 31): 2-Heteroaryl derivatives
-
A range of 14 derivatives of flavone-8-acetic acid (FAA) with a heterocyclic substituent in place of the 2-phenyl group have been prepared and their anti-tumour activity evaluated in vitro against a panel of human and murine tumour cell lines and in vivo against MAC 15A. Some of the compounds, notably 2c,d and s, showed significant in vivo activity and these require further studies in order to evaluate their potential for development.
- Aitken, R. Alan,Bibby, Michael C.,Bielefeldt, Florian,Double, John A.,Laws, Andrea L.,Mathieu, Anne-Laure,Ritchie, Robert B.,Wilson, David W. J.
-
p. 405 - 411
(2007/10/03)
-
- Reevaluation of benzyltrimethylammonium dichloroiodide, previously reported to be a selective iodinating agent
-
Benzyltrimethylammonium dichloroiodate, previously reported as an iodinating agent of thiophenes, appears to be a selective chlorinating agent of both thienyl and furyl derivatives containing a carbonyl group.
- D'Auria,Mauriello
-
p. 248 - 250
(2007/10/02)
-
