US 7,321,055 B2 | ||
Production method of optically active dephenylalanine compounds | ||
Takayuki Hamada, Kawasaki (Japan); Masayuki Oshita, Kawasaki (Japan); and Masanobu Yatagai, Kawasaki (Japan) | ||
Assigned to Ajinomoto Co., Inc., Tokyo (Japan) | ||
Filed on Aug. 04, 2006, as Appl. No. 11/498,752. | ||
Claims priority of application No. 2005-227077 (JP), filed on Aug. 04, 2005. | ||
Prior Publication US 2007/0032658 A1, Feb. 08, 2007 | ||
Int. Cl. C07C 229/00 (2006.01) |
U.S. Cl. 562—441 [562/401; 562/402; 546/136] | 26 Claims |
1. A method of producing an optically active diphenylalanine compound represented by formula (3):
![]() which method comprises:
(i) reacting a diphenylalanine compound represented by formula (1):
![]() ![]() (ii) separating the resulting diastereomeric salt.
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