3-呋喃甲酰氯 、
9α-fluoro-17α,21-dihydroxy-16α-methyl-1,4-pregnadiene-3,11,20-trione 21-acetate 在
4-二甲氨基吡啶 作用下,
以
二氯甲烷 为溶剂,
反应 72.0h,
以48%的产率得到[(8S,9R,10S,13S,14S,16R,17R)-17-(2-acetyloxyacetyl)-9-fluoro-10,13,16-trimethyl-3,11-dioxo-7,8,12,14,15,16-hexahydro-6H-cyclopenta[a]phenanthren-17-yl] furan-3-carboxylate