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:
Jul. 20, 2004
Filed:
Dec. 11, 2001
Applicant:
Inventors:
Yuichi Suzuki, Kawasaki, JP;
Naoko Hirose, Kawasaki, JP;
Tomoyuki Onishi, Kawasaki, JP;
Kunisuke Izawa, Kawasaki, JP;
Assignee:
Ajinomoto Co., Inc., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C30B 7/08 ;
U.S. Cl.
CPC ...
C30B 7/08 ;
Abstract
The present invention provides a production method including adding water to a solution of (2R,3S)-3-tert-butoxycarbonylamino-1,2-epoxy-4-phenylbutane ((2R,3S)-epoxide compound) or (2S,3R)-3-tert-butoxycarbonylamino-1,2-epoxy-4-phenylbutane ((2S,3R)-epoxide compound) in a polar solvent to allow crystallization, whereby to produce crystals of the (2R,3S)-epoxide compound or the (2S,3R)-epoxide compound conveniently in a high yield by an industrial production method without requiring an extremely low temperature.