Novel Carvedilol Analogues That Suppress Store-Overload-Induced Ca2+ Release
摘要:
Carvedilol is a uniquely effective drug for the treatment of cardiac arrhythmias in patients with heart failure. This activity is in part because of its ability to inhibit store-overload-induced calcium release (SOICR) through the RyR2 channel. We describe the synthesis, characterization, and bioassay of ca. 100 compounds based on the carvedilol motif to identify features that correlate with and optimize SOICR inhibition. A single-cell bioassay was employed on the basis of the RyR2-R4496C mutant HEK-293 cell line in which calcium release from the endoplasmic reticulum through the defective channel was measured. IC50 values for SOICR inhibition were thus obtained. The compounds investigated contained modifications to the three principal subunits of carvedilol, including the carbazole and catechol moieties, as well as the linker chain containing the beta-amino alcohol functionality. The SAR results indicate that significant alterations are tolerated in each of the three subunits.
Design, synthesis, and pharmacological effects of structurally simple ligands for MT1 and MT2 melatonin receptors
摘要:
A series of phenoxyalkyl and phenylthioalkyl amides were prepared as melatoninergic ligands. Modulation of affinity of the newly synthesized compound by applying SARs around the terminal amide moiety, the alkyl chain, and the methoxy group on the aromatic ring provides compounds with nanomolar affinity for both melatonin receptor subtypes. Affinity towards MT1 and MT2 receptors were modulated also exploiting chirality. The investigation of intrinsic activity revealed that all the tested compounds behave as full or partial agonists. (C) 2010 Elsevier Ltd. All rights reserved.
Carbazolyl-(4)-oxypropanolamine compounds and therapeutic compositions
申请人:Boehringer Mannheim GmbH
公开号:US04503067A1
公开(公告)日:1985-03-05
Carbazolyl-(4)-oxypropanolamine compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, lower alkanoyl or aroyl; R.sub.2 is hydrogen, lower alkyl or arylalkyl; R.sub.3 is hydrogen or lower alkyl; R.sub.4 is hydrogen or lower alkyl, or when X is oxygen, R.sub.4 together with R.sub.5 can represent --CH.sub.2 --O--; X is a valency bond, --CH.sub.2 --, oxygen or sulfur; Ar is mono- or bicyclic aryl or pyridyl; R.sub.5 and R.sub.6 are individually selected from hydrogen, halogen, hydroxyl, lower alkyl, aminocarbonyl, lower alkoxy, aralkyloxy, lower alkylthio, lower alkylsulphinyl or lower alkylsulphonyl; R.sub.5 and R.sub.6 together can represent methylenedioxy; and the salts thereof with physiologically acceptable acids are outstandingly effective in the treatment and prophylaxis of circulatory and cardiac diseases, e.g., hypertension and angina pectoris.
A series of phenoxyalkyl and phenylthioalkyl amides were prepared as melatoninergic ligands. Modulation of affinity of the newly synthesized compound by applying SARs around the terminal amide moiety, the alkyl chain, and the methoxy group on the aromatic ring provides compounds with nanomolar affinity for both melatonin receptor subtypes. Affinity towards MT1 and MT2 receptors were modulated also exploiting chirality. The investigation of intrinsic activity revealed that all the tested compounds behave as full or partial agonists. (C) 2010 Elsevier Ltd. All rights reserved.
Novel Carvedilol Analogues That Suppress Store-Overload-Induced Ca<sup>2+</sup> Release
作者:Chris D. Smith、Aixia Wang、Kannan Vembaiyan、Jingqun Zhang、Cuihong Xie、Qiang Zhou、Guogen Wu、S. R. Wayne Chen、Thomas G. Back
DOI:10.1021/jm401090a
日期:2013.11.14
Carvedilol is a uniquely effective drug for the treatment of cardiac arrhythmias in patients with heart failure. This activity is in part because of its ability to inhibit store-overload-induced calcium release (SOICR) through the RyR2 channel. We describe the synthesis, characterization, and bioassay of ca. 100 compounds based on the carvedilol motif to identify features that correlate with and optimize SOICR inhibition. A single-cell bioassay was employed on the basis of the RyR2-R4496C mutant HEK-293 cell line in which calcium release from the endoplasmic reticulum through the defective channel was measured. IC50 values for SOICR inhibition were thus obtained. The compounds investigated contained modifications to the three principal subunits of carvedilol, including the carbazole and catechol moieties, as well as the linker chain containing the beta-amino alcohol functionality. The SAR results indicate that significant alterations are tolerated in each of the three subunits.