Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1999-11-15
2000-07-11
Richter, Johann
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
560 29, 562422, 562430, 562444, C07B 5700, C07C22912, C07C22906, C07C22914
Patent
active
060875305
ABSTRACT:
An object of the present invention is to provide a process for producing a .beta.-amino-.alpha.-hydroxy acid derivative via efficient and industrially utilizable steps.
The present invention provides a process for producing a .beta.-amino-.alpha.-hydroxy acid derivative represented by the general formula (2) given below which comprises hydrolyzing an .alpha.-amino-.alpha.', .alpha.-dihaloketone derivative of the general formula (1) given below in the presence of a base, followed by protecting the amino group or without protecting the same. ##STR1##
REFERENCES:
patent: 5395962 (1995-03-01), Kawashima
patent: 5510520 (1996-04-01), Kawashima
patent: 6008403 (1999-12-01), Katsuura et al.
Database Caplus on STN, Acc. No. 1980:639932, Umezawa et al., (2S, 3R)--and (2R, 3R)-d-amino-2-hydroxy-5-methylhexanoic acid and their derivatives. JP 55076847 A2 (Abstract), 1980.
Database Caplus on STN, Acc. No. 1968:22222, Okai et al., `Resolution of amino acids. VIII. Preparation of the four optical isomers of beta-hydroxyaspartic acid.` Bull. Chem. Soc. Jpn. (1967), 40(9), pp. 2154-2159 (Abstract), 1968.
Inoue Kenji
Matsumoto Shingo
Matsuo Kazuhiko
Moroshima Tadashi
Sugawa Tadashi
Davis Brian J.
Kaneka Corporation
Richter Johann
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