(R)-methoxytrifluoromethylphenylacetyl chloride 、
Acetic acid (3S,5S,6S,8S,9R,10S,13R,14S,15R,16R,17R)-3,6-diacetoxy-8,16-dihydroxy-17-((1R,5S)-6-hydroxy-1,5-dimethyl-hexyl)-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-15-yl ester 以
吡啶 为溶剂,
生成 (S)-3,3,3-Trifluoro-2-methoxy-2-phenyl-propionic acid (2S,6R)-2-methyl-6-((3S,5S,6S,8S,9R,10S,13R,14S,15R,16R,17R)-3,6,15-triacetoxy-8,16-dihydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl)-heptyl ester