FAN PINGCHEN,GREENMAN KEVIN LLOYD,LELETI MANMOHAN REDDY,LI YANDONG,POWERS JAY,TANAKA HIROKO,YANG JUN,ZENG YIBIN
申请号:
ZA201104588
公开号:
ZA201104588B
申请日:
2011.06.22
申请国别(地区):
ZA
年份:
2013
代理人:
摘要:
A process for preparing a compound of formula (ii), comprising (a) treating a compound of formula (i) with H 2 and a platinum oxide catalyst under reducing conditions; and (b) subjecting the product of step (a) to resolution with di-toluoyl-L-tartaric acid to provide compound (ii) in about 97% enantiomeric excess.