Enzymatic synthesis of optically active 1- and 2-aminoalkanephosphonates
摘要:
A number of 1- and 2-aminoalkanephosphonates were resolved with high enantioselectivity by Candida antarctica lipase B-catalyzed acetylation. By this method, optically pure aminoalkanephosphonates and amidoalkanephosphonates, the precursors of the corresponding aminoalkanephosphonic acids, were synthesized. (C) 2003 Elsevier Ltd. All rights reserved.
A novel route has been devised for the preparation of a series of 1-aminoalkylphosphonate diesters, precursors to analogues of a-amino acids. The route involves a facile bromine substitution at the 1-position of alkylphosphonate diesters using N-bromosuccinimide, followed by azide ion displacement and catalytic hydrogenolysis.
Substituted diphenyloxazoles, the synthesis thereof, and the use thereof as fluorescence probes
申请人:3-Dimensional Pharmaceuticals, Inc.
公开号:US20030105111A1
公开(公告)日:2003-06-05
The present invention is directed to a compound of Formula I:
1
wherein A, R
1
, and R
2
are defined herein. The present invention is also directed to compositions comprising compounds of Formula I, methods of using compounds of Formula I, and methods of making compounds of Formula I.