Stereocontrolled synthesis of C2-symmetric and pseudo-C2-symmetric diamino alcohols and diols for use in HIV protease inhibitors
摘要:
The stereocontrolled syntheses of dibenzyldiamino alcohol 1 and dibenzyldiamino diols 2-4, core units of potent C2-symmetric and pseudo-C2-symmetric inhibitors of HIV protease, are described, starting from phenylalanine. Stereoselective epoxidation of trans olefin 7, produced by S(N)2' displacement of an allylic mesylate, followed by regiospecific epoxide opening with lithium azide provided the azido alcohol 8 as the major product. Azide reduction and deprotection led to diamine 1. Protected diamino diols 15-17 were prepared expeditiously by intermolecular titanium- or vanadium-mediated pinacol coupling of protected phenylalaninal. Methods for the stereospecific interconversion of the major (3R,4R,5R,6S) isomer to the desired (3S,4R,5S,6S) isomer via intramolecular hydroxyl inversion are described.
Stereocontrolled synthesis of C2-symmetric and pseudo-C2-symmetric diamino alcohols and diols for use in HIV protease inhibitors
摘要:
The stereocontrolled syntheses of dibenzyldiamino alcohol 1 and dibenzyldiamino diols 2-4, core units of potent C2-symmetric and pseudo-C2-symmetric inhibitors of HIV protease, are described, starting from phenylalanine. Stereoselective epoxidation of trans olefin 7, produced by S(N)2' displacement of an allylic mesylate, followed by regiospecific epoxide opening with lithium azide provided the azido alcohol 8 as the major product. Azide reduction and deprotection led to diamine 1. Protected diamino diols 15-17 were prepared expeditiously by intermolecular titanium- or vanadium-mediated pinacol coupling of protected phenylalaninal. Methods for the stereospecific interconversion of the major (3R,4R,5R,6S) isomer to the desired (3S,4R,5S,6S) isomer via intramolecular hydroxyl inversion are described.
[EN] PROCESS FOR THE PREPARATION OF A SUBSTITUTED DIAMINODIOL<br/>[FR] PROCEDE DE PREPARATION D'UN DIAMINODIOL SUBSTITUE
申请人:ABBOTT LABORATORIES
公开号:WO1993023361A1
公开(公告)日:1993-11-25
(EN) A process is disclosed for the preparation of a substituted diaminodiol. These compounds are HIV protease inhibitors.(FR) L'invention se rapporte à un procédé de préparation d'un diamino diol substitué. Ces composés constituent des inhibiteurs de protéase de VIH.