tert-butyl (3R,6R,7R,8S,8aR)-6-but-3-enyl-7-ethenyl-8-ethyl-5-oxo-3-phenyl-3,7,8,8a-tetrahydro-2H-[1,3]oxazolo[3,2-a]pyridine-6-carboxylate 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
二氯甲烷 为溶剂,
以84%的产率得到tert-butyl (3R,5aR,9aR,10S,10aR)-10-ethyl-5-oxo-3-phenyl-3,6,7,9a,10,10a-hexahydro-2H-[1,3]oxazolo[3,2-b]isoquinoline-5a-carboxylate