(1R,9S,10R)-1-benzyl-5-bromo-10-hydroxy-10-methyl-tricyclo[7.3.1.0(2,7)]trideca-2,4,6-trien-13-one1(R)-benzyl-5-bromo-10(R)-hydroxy-10-methyl-tricyclo[7.3.1.0
2,7]trideca-2,4,6-trien-13-one 在
sodium ethanolate 作用下,
以
乙醇 为溶剂,
反应 0.5h,
以97%的产率得到(S)-4a-benzyl-7-bromo-4,4a,9,10-tetrahydrophenanthren-2(3H)-one