The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 19, 2006
Filed:
Nov. 20, 2003
Masanobu Sugawara, Chiba, JP;
Akio Fujii, Hyogo, JP;
Kazumi Okuro, Hyogo, JP;
Yasuhiro Saka, Hyogo, JP;
Nobuo Nagashima, Hyogo, JP;
Kenji Inoue, Hyogo, JP;
Toshihiro Takeda, Hyogo, JP;
Koichi Kinoshita, Hyogo, JP;
Tadashi Moroshima, Hyogo, JP;
Yoshihide Fuse, Hyogo, JP;
Yasuyoshi Ueda, Hyogo, JP;
Masanobu Sugawara, Chiba, JP;
Akio Fujii, Hyogo, JP;
Kazumi Okuro, Hyogo, JP;
Yasuhiro Saka, Hyogo, JP;
Nobuo Nagashima, Hyogo, JP;
Kenji Inoue, Hyogo, JP;
Toshihiro Takeda, Hyogo, JP;
Koichi Kinoshita, Hyogo, JP;
Tadashi Moroshima, Hyogo, JP;
Yoshihide Fuse, Hyogo, JP;
Yasuyoshi Ueda, Hyogo, JP;
Kaneka Corporation, Osaka, JP;
Abstract
An optically active amino acid derivative is produced by N-protecting an optically active 3-haloalanine derivative followed by cyclization, or cyclizing this derivative followed by N-protection to thereby give an optically active N-protected-aziridine-2-carboxylic acid derivative which is protected by a benzenesulfonyl group substituted by nitro at the 2- and/or 4-positions and then treating this product with an organic metal reagent, or by N-protecting an optically active 3-haloalanine derivative to thereby give N-protected-aziridine-2-carboxylic acid which is protected by a benzenesulfonyl group substituted by nitro at the 2- and/or 4-positions and then treating this product with an organic metal reagent. According to this process, natural and unnatural optically active amino acids can be produced from inexpensive materials by using simple procedures.