Title:
PROCESS FOR PRODUCING OPTICALLY ACTIVE $g(b)-AMINO ACID DERIVATIVE
Document Type and Number:
WIPO Patent Application WO/2002/024628
Kind Code:
A1
Abstract:
A process for industrially advantageously producing efficiently and easily a $g(b)-amino acid derivative having a high optical purity. The process for producing an optically active $g(b)-amino acid derivative is characterized in that any one of optical isomers of an acid salt of a $g(b)-amino acid derivative represented by the general formula (1) is selectively crystallized from a solution of a mixture of the optical isomers to thereby obtain crystals containing the optical isomer salt in a higher proportion.
Inventors:
SAKA YASUHIRO (JP)
MITSUDA MASARU (JP)
AMANO SUSUMU (JP)
NAGASHIMA NOBUO (JP)
MITSUDA MASARU (JP)
AMANO SUSUMU (JP)
NAGASHIMA NOBUO (JP)
Application Number:
PCT/JP2001/008158
Publication Date:
March 28, 2002
Filing Date:
September 20, 2001
Export Citation:
Assignee:
KANEKA CORP (JP)
SAKA YASUHIRO (JP)
MITSUDA MASARU (JP)
AMANO SUSUMU (JP)
NAGASHIMA NOBUO (JP)
SAKA YASUHIRO (JP)
MITSUDA MASARU (JP)
AMANO SUSUMU (JP)
NAGASHIMA NOBUO (JP)
International Classes:
C07B57/00; C07C227/34; C07C229/34; C07C229/22; (IPC1-7): C07C229/22; C07C227/34
Domestic Patent References:
| WO1999003852A1 | 1999-01-28 |
Other References:
LUBBEN M. ET AL.: "Asymmetric synthesis of beta-lactams via amine additions to 5(R)-methyloxy-2(5H)-furanone", TETRAHEDRON: ASYMMETRY, vol. 2, no. 8, 1991, pages 775 - 778, XP002907961
Attorney, Agent or Firm:
Yasutomi, Yasuo (4-20 Nishinakajima 5-chome, Yodogawa-k, Osaka-shi Osaka, JP)
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