PROCESS FOR PREPARING OPTICALLY ACTIVE 2-PIPERAZINECARBOXYLIC ACID DERIVATIVES
申请人:TORAY INDUSTRIES, INC.
公开号:EP0906906A1
公开(公告)日:1999-04-07
Optically-active 2-piperazinecarboxylic acid derivatives are produced through diastereomer salt resolution using optically-active acidic amino acid derivative as the resolving reagent. In this method, the recovery of the resolving reagent used is high, and the production efficiency to produce the optically-active products is high.
As the optically-active acidic amino acid derivatives, usable are optically-active, N-acylated acidic amino acid derivatives and optically-active, N-sulfonylated acidic amino acid derivatives.
PROCESS FOR THE PREPARATION OF STABLE, CRYSTALLINE (6S)-N(5)-METHYL-5,6,7,8-TETRAHYDROFOLIC ACID
申请人:MANZOTTI Raffella
公开号:US20130040956A1
公开(公告)日:2013-02-14
A process for the preparation of the stable, amorphous calcium salt of (6S)-N(5)-methyl-5,6,7,8-tetrahydrofolic acid of the formula V,
and a stable, amorphous calcium salt of (6S)-N(5)-methyl-5,6,7,8-tetrahydrocolic acid of the formula V are provided.
US5952503A
申请人:——
公开号:US5952503A
公开(公告)日:1999-09-14
US8754212B2
申请人:——
公开号:US8754212B2
公开(公告)日:2014-06-17
Makovec; Chiste; Bani, European Journal of Medicinal Chemistry, 1986, vol. 21, # 1, p. 9 - 20