4,5-Dialkylsubstituted 2-imino-1,3-thiazolidine derivatives as potent inducible nitric oxide synthase inhibitors
摘要:
In the course of our search for selective iNOS inhibitors, we have previously reported that 2-imino-1,3-oxazolidine derivatives (1) and 2-aminothiazole derivatives (2) are selective iNOS inhibitors. In order to find more potent iNOS inhibitors, we focused our efforts on the synthesis and evaluation of the inhibitory activity against iNOS and selectivity for iNOS both in vitro and in vivo of a series of 2-imino-1,3-thiazolidine derivatives (3), which are analogues of I and 2. Our results show that among the compounds synthesized (4R,5R)-5-ethyl-2-imino-4-methyl-1,3-thiazolidine [(4R,5R)-14a: ES-1537] exhibited potent inhibitory activity and selectivity for iNOS. In addition, ES-1537 had good pharmacokinetic profile in rats with BA value of 80%. It is therefore expected that ES-1537 may be therapeutically useful for the treatment of diseases related to excess production of NO. (C) 2004 Elsevier Ltd. All rights reserved.
nitric oxide synthase (iNOS). To our knowledge, only few methods have been reported for the synthesis of 4,5-dialkylsubstituted 2-imino-1,3-selenazolidine derivatives (2), which are the selenium analogue of 1. Herein, we report the directsynthesis of 2 from the corresponding O-methanesulfonyl β-aminoalcohol hydrochlorides using potassium selenocyanate and evaluation for the inhibitory activity against
Diastereoselective preparation of anti-β-amino alcohols via michael addition of alkoxide anions to nitroolefins and subsequent hydrogenation reaction
作者:Akio Kamimura、Noboru Ono
DOI:10.1016/s0040-4039(01)80295-1
日期:——
Diastereoselective conjugate addition of benzylalkoxide anion to nitroolefins and subsequent hydrogenation reaction provide a new convenient method for the preparation of anti-β-amino alcohols.
In our search for a novel class of inducible nitric oxide synthase (NOS) inhibitors, 1,3-oxazolidin-2-imine was found to weakly inhibit iNOS. Further modifications of this compound resulted in a remarkable increase in both the in vivo and in vitro inhibitory activity and selectivity for iNOS. (C) 2003 Elsevier Ltd. All rights reserved.
[EN] NEW PURINE DERIVATIVES<br/>[FR] NOUVEAUX DERIVES PURIQUES
申请人:CYCLACEL LTD
公开号:WO2004016612A3
公开(公告)日:2004-07-01
[EN] PURINE DERIVATIVES AND THEIR USE AS ANTIPROLIFERATIVE AGENTS<br/>[FR] NOUVEAUX DERIVES DE PURINE