238428-12-1Relevant articles and documents
Identification of novel amino acid derived CCK-2R antagonists as potential antiulcer agent: Homology modeling, design, synthesis, and pharmacology
Gupta, Amit K.,Varshney, Kanika,Singh, Neetu,Mishra, Vaibhav,Saxena, Mridula,Palit, Gautam,Saxena, Anil K.
, p. 176 - 187 (2013/05/09)
The present study revisited the three-dimensional (3D) homology model of CCK-2R using human A2a adenosine receptor and the resolved NMR based structure of the third extracellular loop of the CCK-2R as templates. Further in order to identify novel antiulcer agents, rational designing have been performed utilizing the substructure of a well-known CCK-2R antagonist benzotript as a lead molecule and submitted to the combined docking and simulation studies. This led to the understanding of the essential structure requirement as well as variation of binding mode among conformational isomers of small molecule CCK-2R antagonists. In the next step, preparation of each configurational isomer of these molecules was carried out and submitted for their in vitro activity followed by in vivo screening into antiulcer rat model. The biological screening of these compounds has not only validated the developed homology model of CCK-2R but also led to the identification of highly potent CCK-2R antagonist 6a as an orally active and safe candidate molecule having better antiulcer properties than the well-known drug benzotript.
Synthesis and biological evaluation of indolyl glyoxylamides as a new class of antileishmanial agents
Chauhan, Shikha S.,Gupta, Leena,Mittal, Monika,Vishwakarma, Preeti,Gupta, Suman,Chauhan, Prem M.S.
scheme or table, p. 6191 - 6194 (2010/12/18)
A series of indolylglyoxylamide derivatives have been synthesized and evaluated in vitro against amastigote form of Leishmania donovani. Compound 8c has been identified as the most active analog of the series with IC50 value of 5.17 μM and SI value of 31.48, and is several folds more potent than the standard drugs sodium stilbogluconate and pentamidine.
Potent 1,3-disubstituted-9H-pyrido[3,4-b]indoles as new lead compounds in antifilarial chemotherapy
Srivastava,Agarwal,Chauhan,Agarwal,Bhaduri,Singh,Fatima,Chatterjee
, p. 1223 - 1236 (2007/10/03)
Substituted 9H-pyrido[3,4-b]indoles (β-carbolines) identified in our laboratory as potential pharmacophore for designing macrofilaricidal agents, have been explored further for identifying the pharmacophore responsible for high order of adulticidal activity. This has led to syntheses and macrofilaricidal evaluations of a number of 1-aryl-9H-pyrido[3,4-b]indole-3-carboxylate derivatives (3-7). The macrofilarical activity was initially evaluated in vivo against Acanthoeilonema viteae. Amongst all the synthesized compounds, only twelve compounds namely 3a, 3c, 3d, 3f, 4c, 4d, 4f, 5a, 6f, 6h, 6i and 7h have exhibited either >90% micro- or macrofilaricidal activity or sterilization of female worms. These compounds have also been screened against Litomosoides carinii and of these only 3f and 5a have also been found to be active. Finally these two compounds have been evaluated against Brugia malayi. The structure activity relationship (SAR) associated with position-1 and 3 substituents in β-carbolines have been discussed. It has been observed that the presence of carbomethoxy at position-3 and an aryl substituent at position-1 in β-carbolines effectively enhance antifilarial activity particularly against A. viteae. Amongst the various compounds screened, methyl 1-(4-methylphenyl)-9H-pyrido[3,4-b]indole-3-carboxylate (4c) has shown highest adulticidal activity and methyl 1-(4-chlorophenyl)-1,2,3,4-tetrahydro-9H-pyrido[3,4-b]indole-3-carboxylate (3a) has shown highest microfilaricidal action against A. viteae at 50mg/kgx5 days (ip). Another derivative of this compound namely 1-(4-chlorophenyl)-3-hydroxymethyl-9H-pyrido[3,4-b]indole (5a) exhibited highest activity against L. carinii at 30mg/kgx5 days (ip) and against B. malayi at 50mg/kgx5 days (ip) or at 200mg/kgx5 days (po). Copyright (C) 1999 Elsevier Science Ltd.
