RACEMISATION .I. RACEMISATION OF PROTOBERBERINES UNDER CONDITIONS OF CATALYTIC HYDROGENATION

被引:23
作者
KAMETANI, T
IHARA, M
机构
[1] Pharmaceutical Institute, School of Medicine, Tohoku University, Sendai, Kitayobancho
来源
JOURNAL OF THE CHEMICAL SOCIETY C-ORGANIC | 1968年 / 02期
关键词
D O I
10.1039/j39680000191
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Treatment of optically active protoberberine alkaloids, namely (-)-coreximine (II), (-)-tetrahydropalmatine (III), and (-)-norcoralydine (IV), with hydrogen in the presence of platinum oxide afforded the corresponding racemic protoberberines. Catalytic hydrogenolysis of (-)-[13,13,13a-D 3]coreximine (VI) and (-)-[13,13,13a-D3]norcoralydine (VIII) gave racemised products with the expected mass spectra.
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页码:191 / &
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