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:
Apr. 11, 2006
Filed:
Nov. 09, 2001
Applicants:
Hidetoshi Tsunoda, Mobara, JP;
Kunio Okumura, Sodegaura, JP;
Kengo Otsuka, Mobara, JP;
Inventors:
Assignee:
Mitsui Chemicals, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 215/30 (2006.01); C07C 215/46 (2006.01); C07C 213/02 (2006.01); C07C 213/08 (2006.01); C07C 271/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A readily available and inexpensive natural α-amino acid is converted into a compound represented by formula (1), which is then reacted with an organometallic reagent represented by formula (2) to give an optically active 5-hydroxyoxazolidine represented by formula (3), which is then treated with an acid to provide an optically active aminoketone represented by formula (4). The product is then converted into an optically active aminoalcohol represented by formula (5) or (6) by, for example reduction.