A CONFORMATIONAL COMPARISON OF CYCLO-[(S)-HIS-(S)-LEU] AND CYCLO-[(S)-HIS-(S)-PHE], CATALYSTS FOR THE ASYMMETRIC ADDITION OF HCN TO ALDEHYDES

被引:14
作者
HOGG, DJP [1 ]
NORTH, M [1 ]
STOKOE, RB [1 ]
机构
[1] UNIV COLL N WALES,DEPT CHEM,BANGOR LL57 2UW,GWYNEDD,WALES
关键词
D O I
10.1016/S0040-4020(01)85277-7
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Cyclo-[(S)-His-(S)-Leu] adopts a conformation in solution in which the imidazole ring is folded over the diketopiperazine ring. This is the opposite conformation to that determined for cyclo-[(S)-His-(S)-Phe], and may explain the opposite sense of asymmetric induction between the two catalysts.
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收藏
页码:7933 / 7946
页数:14
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