Enzymatic resolution of 2-substituted tetrahydroquinolines. Convenient approaches to tricyclic quinoxalinediones as potent NMDA-glycine antagonists
作者:Seiji Katayama、Nobuyuki Ae、Ryu Nagata
DOI:10.1016/s0957-4166(98)00484-4
日期:1998.12
class of NMDA-glycine antagonists using enzymatic resolutions are described. An intermediate, racemic methyl 1,2,3,4-tetrahydroquinoline-2-carboxylate 3, was resolved to (S)-3 in 97% ee and 47% yield (E=67) using α-chymotrypsin. In an improved method, hydrolysis of another intermediate, racemic methyl 1,2,3,4-tetrahydroquinoline-2-acetate 4, with Novozym® 435 provided the desired (S)-4 in high enantioselectivity
描述了使用酶促拆分导致对映体纯的三环喹喔啉二酮类NMDA-甘氨酸拮抗剂的两种方法。使用α-胰凝乳蛋白酶将中间体1,2,3,4-四氢喹啉-2-羧酸外消旋甲基1,2,3,4-四氢喹啉-2-羧酸酯3拆分为(S)-3,收率为97%ee,收率为47%(E = 67)。在一个改进的方法中,另一种中间体,外消旋甲基-1,2,3,4-四氢喹啉-2-乙酸乙酯水解4,用的Novozym ® 435提供所需的(小号) - 4在高对映选择性和产率(93%ee的,50 %,E = 94)。