3-((1R,4R,8S,E)-1-hydroxy-4,8-dimethyl-9-(triisopropylsilyloxy)non-2-enyl)-5,6-dimethoxy-5,6-dimethyl-1,4-dioxan-2-one 在
(+/-)-camphorsulfonic acid 作用下,
以
甲醇 为溶剂,
反应 18.0h,
以74%的产率得到(2R,3R,6R,10S,E)-methyl-2,3,11-trihydroxy-6,10-dimethylundec-4-enoate