(S)-3-(tert-Butyl-dimethyl-silanyloxy)-pentanedioic acid (S)-1-((2S,6S,7S,10R)-7-isopropyl-10-methyl-1,5-dioxa-spiro[5.5]undec-2-ylmethyl)-2,2-dimethyl-propyl ester (R)-1-naphthalen-1-yl-ethyl ester 在
palladium dihydroxide 氢气 作用下,
以
乙酸乙酯 为溶剂,
以80%的产率得到(S)-3-(tert-Butyl-dimethyl-silanyloxy)-pentanedioic acid mono-[(S)-1-((2S,6S,7S,10R)-7-isopropyl-10-methyl-1,5-dioxa-spiro[5.5]undec-2-ylmethyl)-2,2-dimethyl-propyl] ester