CYCLIC AMIDINE ANALOGS AS INHIBITORS OF NITRIC OXIDE SYNTHASE
申请人:MERCK & CO., INC.
公开号:EP0789571A1
公开(公告)日:1997-08-20
[EN] CYCLIC AMIDINE ANALOGS AS INHIBITORS OF NITRIC OXIDE SYNTHASE<br/>[FR] ANALOGUES D'AMIDINES CYCLIQUES UTILISES COMME INHIBITEURS DE LA MONOXYDE D'AZOTE SYNTHETASE
申请人:MERCK & CO., INC.
公开号:WO1996014844A1
公开(公告)日:1996-05-23
(EN) Disclosed herein are the heterocyclic compounds and pharmaceutically acceptable salts thereof which have been found to be useful in the treatment of nitric oxide synthase mediated diseases and disorders.(FR) L'invention concerne des composés hétérocycliques et des sels pharmaceutiquement acceptables de ceux-ci qui se sont montrés utilesdans le traitement des maladies et des troubles liés à la monoxyde d'azote synthétase.
Synthesis of (2S,4S,5S)-5-hydroxy-4-methylpipecolic acid via amide methylenation of 5-hydroxy-4-methyl-2-piperidinone with dimethyltitanocene
作者:Claus Herdeis、Eberhard Heller
DOI:10.1016/s0957-4166(97)00091-8
日期:1997.4
(4S,5S)-5-hydroxy-4-methylpiperidine-2-one 4, readily available from S-glutamic acid, serves as a starting material for the synthesis of (2S,4S,SS)-5-hydroxy-4-methylpipecolic acid 12. The key step of this reaction sequence is the chemoselective methylenation of the amide carbonyl group of 6 with dimethyltitanocene to the exocyclic enecarbamate 7. Hydroboration/oxidation of the double bond resulted in the formation of all-cis alcohol 8 which was transformed via aldehyde to 12. (C) 1997 Elsevier Science Ltd.