alkaloids;
Michael addition;
natural products;
nitrogen heterocycles;
stereoelectronic effects;
D O I:
10.1002/anie.200351906
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Forming the tetrasubstituted piperidine ring with stereocontrol in a Michael-type conjugate addition is a key step in the first enantioselective synthesis of the antipode 1 of alkaloid 205 B. The absolute stereo-chemistry of the natural product could be determined unambiguously by comparison of the optical rotations.