[EN] NOVEL PYRAZOLODIAZEPINE COMPOUNDS AS A TRANSGLUTAMINASE INHIBITOR, THE PREPARATION METHOD THEREOF AND A COMPOSITION CONTAINING THE SAME [FR] NOUVEAUX COMPOSÉS DE PYRAZOLODIAZÉPINE EN TANT QU'INHIBITEUR DE LA TRANSGLUTAMINASE, PROCÉDÉ DE PRÉPARATION ASSOCIÉ ET COMPOSITION LES CONTENANT
Discovery and structure–activity relationships of pyrazolodiazepine derivatives as the first small molecule agonists of the Drosophila sex peptide receptor
摘要:
In behavioral research, the sex peptide receptor in Drosophila melanogaster (DrmSPR) is the most interesting G protein-coupled receptor (GPCR) and is involved in post-mating responses such as increased egg-laying and decreased receptivity of the female; during these responses, the receptors are activated by a specific natural peptide agonist (sex peptide, SP). To discover small molecule agonists for DrmSPR, a compound library based on a pyrazolodiazepine scaffold, which was previously reported as a potential privileged structure, was screened. Structure-activity relationship (SAR) studies of the hit compounds, which exhibited weak agonistic effects (69-72% activation at 100 mu M), were explored through the synthesis of various analogs with substituents at the R-1, R-2, R-3 and R-4 positions of the pyrazolodiazepine skeleton. As a result, compounds 21 and 31 of the 6-benzyl pyrazolodiazepine derivative series were found to be small molecule agonists for DrmSPR with EC50 values of 3-4 mu M. (C) 2015 Elsevier Ltd. All rights reserved.