发明名称 |
BIFUNCTIONAL BIS-CINCHONA ALKALOID THIOUREA ORGANO CATALYSTS, PREPARATION METHOD THEREOF, AND METHOD FOR PREPARING CHIRAL AMINO ACID FROM AZLACTONES USING THE SAME |
摘要 |
PURPOSE: A bifunctional bis-cinchona alkaloid thiourea organic chiral catalyst compound and a method for preparing the same are provided to obtain (R)-type N-acyl amino acid ester of highly optical purity. CONSTITUTION: A bifunctional bis-cinchona alkaloid thiourea organic chiral catalyst compound is denoted by chemical formula 1. In chemical formula 1, R is ethyl group or -CH=CH_2. The bifunctional organic chiral catalyst is obtained by reacting amine with carbothio diimidazole. The amine is obtained from cinchona alkaloid by epimerization. A chiral N-acyl amino acid ester is obtained by reacting N-acyl amino acid, racemic azlactone, (S)-azlactone or (R)-azlactone with neucleophile under the presence of bifunctional chiral organic catalyst. The neucleophile is alcohol or thiol.
|
申请公布号 |
KR20110005470(A) |
申请公布日期 |
2011.01.18 |
申请号 |
KR20090063047 |
申请日期 |
2009.07.10 |
申请人 |
SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION |
发明人 |
SONG, CHOON GEUI;LEE, JI WOONG;RYU, TAE HI;BAE, HAN YONG;OH, JOONG SUK |
分类号 |
C07D403/14 |
主分类号 |
C07D403/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|