2,5-降冰片二烯 、
(1S,5R,7R)-1-(10,10-dimethyl-3,3-dioxo-3-thia-4-azatricyclo[5.2.1.01,5]dec-4-yl)-4-methoxy-2-butyn-1-one 、 alkaline earth salt of/the/ methylsulfuric acid 以
甲苯 为溶剂,
反应 13.0h,
以52%的产率得到(1R,2R,6S,7S)-5-((1S,5R,7R)-10,10-dimethyl-3,3-dioxo-3-thia-4-azatricyclo[5.2.1.0
1,5]decan-4-carbonyl)-4-methoxymethyltricyclo[5.2.1.0
2,6]deca-4,8-dien-3-one