(E)-3-(1-methyl-1H-imidazol-4-yl)acrylic acid (1R,4aR,6R,10S,11S,12aR)-11-(2,2-dimethylpropionyloxy)-1-isopropyl-4-methyl-10-[(2'RS)-(tetrahydropyran-2-yloxy)]-1,2,4a,5,6,7,10,11,12,12a-decahydrobenzocyclodecen-6-yl ester 在
对甲苯磺酸 作用下,
以
乙醇 、
水 为溶剂,
反应 72.0h,
以82%的产率得到(E)-3-(1-methyl-1H-imidazol-4-yl)acrylic acid (1R,4aR,6R,10S,11S,12aR)-11-(2,2-dimethylpropionyloxy)-1-isopropyl-4-methyl-10-hydroxy-1,2,4a,5,6,7,10,11,12,12a-decahydrobenzocyclodecen-6-yl ester