Synthesis of the (2S,4S)-stereoisomers of 4-(indol-1-yl) and 4-arylamino derivatives of 5-oxoproline, proline, and 2-hydroxymethylpyrrolidine
作者:A. Yu. Vigorov、I. A. Nizova、K. E. Shalunova、A. N. Grishakov、L. Sh. Sadretdinova、I. N. Ganebnykh、M. A. Ezhikova、M. I. Kodess、V. P. Krasnov
DOI:10.1007/s11172-011-0137-4
日期:2011.5
Nucleophilic substitution of the halogen atom in dimethyl (S)-4-bromoglutamate followed by removal of the protecting groups and closure of a lactam ring afforded (2S,4S)-4-(indolin-1-yl)-5-oxoproline. The indoline fragment was oxidized into the indole fragment to give (2S,4S)-4-(indol-1-yl)-5-oxoproline; reduction of the carbonyl groups with BH3 yielded (2S,4S)-4-(indol-1-yl)prolines and (2S,4S)-2
(S)-4-溴谷氨酸二甲酯中卤素原子的亲核取代,然后去除保护基团并关闭内酰胺环,得到 (2S,4S)-4-(indolin-1-yl)-5-oxoproline。将二氢吲哚片段氧化成吲哚片段,得到(2S,4S)-4-(吲哚-1-基)-5-氧代脯氨酸;用 BH3 还原羰基产生 (2S,4S)-4-(indol-1-yl) 脯氨酸和 (2S,4S)-2-羟甲基-4-(indol-1-yl) 吡咯烷。研究了 (2S,4S)-4-arylamino-5-oxoprolines 用 BH3 还原成相应的 (2S,4S)-4-arylaminoproline 和 (2S,4S)-4-arylamino-2-hydroxymethylpyrrolidines。