The synthesis and antihypertensive activity of a new series of N-(mercaptoacyl)-thiazolidinecarboxylic acids (VIIa-d) are described. Antihypertensive activity was evaluated in terms of angiotensin I-converting enzyme (ACE) inhibitory activity. The activities of these compounds were compared with that of (2S)-1-[(2S)-3-mercapto-2-methylpropanoyl] proline, SQ 14225, and many of them were found to be relatively potent inhibitors of ACE. The most potent was (4R)-2-(2-hydroxyphenyl)-3-(3-mercaptopropanoyl)-4-thiazolidinecarboxylic acid (62). Structure-activity relationships among the thiazolidines and some related compounds are discussed.
Stereo- and regioselective synthesis of novel β-lactam tethered spiropyrrolizidine/pyrrolothiazole heterocyclic hybrids
作者:Rajesh Raju、Raghavachary Raghunathan、Natarajan Arumugam、Abdulrahman I. Almansour、Raju Suresh Kumar、Saied M. Soliman
DOI:10.1016/j.tet.2021.132026
日期:2021.3
A regio and diastereoselective synthesis of library of structurally intriguing novel hybrid heterocycles comprising spiropyrrolizidines/pyrrolothiazoles, oxindole/acenaphthenone and β-lactam moieties have been synthesized in good yields. The hitherto unexplored 2-((1-(4-methoxyphenyl)-4-oxo-3-phenylazetidin-2-yl)methylene) malononitriles were used as the dipolarophiles, while the dipoles were derived
Discovery of Cysteine and Its Derivatives as Novel Antiviral and Antifungal Agents
作者:Shan Yang、Tienan Wang、Yanan Zhou、Li Shi、Aidang Lu、Ziwen Wang
DOI:10.3390/molecules26020383
日期:——
Based on the structure of the natural product cysteine, a series of thiazolidine-4-carboxylic acids were designed and synthesized. All target compounds bearing thiazolidine-4-carboxylic acid were characterized by 1H-NMR, 13C-NMR, and HRMS techniques. The antiviral and antifungal activities of cysteine and its derivatives were evaluated in vitro and in vivo. The results of anti-TMV activity revealed
New aspects of the formation of 2-substituted thiazolidine-4-carboxylic acids and their thiohydantoin derivatives
作者:Ahmed R. E. Mahdy、Elghareeb E. Elboray、Ragab F. Fandy、Hussien H. Abbas-Temirek、Moustafa F. Aly
DOI:10.24820/ark.5550190.p009.861
日期:——
readily with (R)-cysteine in boiling acidified methanol to give diastereomeric mixtures of the corresponding 2-(aryl substituted) thiazolidine-4-carboxylicacids. 4-Nitrobenzaldehyde under similar conditions afforded one isomer of 2-(4-nitrophenyl)thiazolidine-4-carboxylicacid, which epimerized in the NMR solvents into a diastereomeric mixture. 2-Nitrobenzaldehyde reacted with (R)-cysteine to afford 3
New derivatives of amidines, their preparation, their use as medicaments and the pharmaceutical compositions containing them
申请人:Auvin Serge
公开号:US20050261269A1
公开(公告)日:2005-11-24
Novel derivatives of amidines of formula
wherein the substituents are defined as in the specification which are useful for inhibiting activity on NO-synthase enzymes producing nitrogen mono oxide and/or trapping the reactive oxygen species (ROS) making them useful for treating various diseases.