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Title:
PROCESS FOR PREPARING OPTICALLY ACTIVE 2-PIPERAZINECARBOXYLIC ACID DERIVATIVES
Document Type and Number:
WIPO Patent Application WO/1998/029398
Kind Code:
A1
Abstract:
A process for preparing optically active piperazinecarboxylic acid derivatives by the resolution of diastereomeric salts wherein an optically active acidic amino acid derivative is used as the agent for optical resolution to thereby enhance the recovery of the agent and the production efficiency. N-Acyl and N-sulfonyl derivatives of optically active acidic amino acids are usable as the above optically active acidic amino acid derivatives.

Inventors:
FUJINO TOSHIHIRO (JP)
SATO HARUYO (JP)
Application Number:
PCT/JP1996/003864
Publication Date:
July 09, 1998
Filing Date:
December 27, 1996
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
FUJINO TOSHIHIRO (JP)
SATO HARUYO (JP)
International Classes:
C07B57/00; C07C233/46; C07D241/04; C07C233/83; C07C271/22; C07C311/04; C07C311/06; C07C311/08; (IPC1-7): C07D241/04
Foreign References:
JPS4839948B11973-11-28
JPS4919252B11974-05-16
JPH083120A1996-01-09
JPH04164066A1992-06-09
JPS6025959A1985-02-08
Other References:
See also references of EP 0906906A4
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