ethyl (3R,3aR,4R,5S,6S,7S)-3-acetyl-5,6-diacetyloxy-7-hydroxy-7-methyl-4-propan-2-yl-3a,4,5,6-tetrahydro-3H-2-benzofuran-1-carboxylate 在
Crabtree's catalyst 、
氢气 作用下,
以
二氯甲烷 为溶剂,
反应 20.0h,
以100%的产率得到ethyl (1R,3R,3aR,4R,5S,6S,7S,7aS)-3-acetyl-5,6-diacetyloxy-7-hydroxy-7-methyl-4-propan-2-yl-3,3a,4,5,6,7a-hexahydro-1H-2-benzofuran-1-carboxylate