上游原料
(3R)-3-[(1R,3aR,7aR)-4-[(E)-2-((3S,5R)-3,5-bis[[tert-butyl(dimethyl)silyl]oxy]-2-methylenecyclohexylidene)ethylidene]-7a-methyloctahydro-1H-inden-1-yl]butanalethyl (5R)-5-[(1R,3aR,7aR)-4-[(E)-2-((3S,5R)-3,5-bis[[tert-butyl(dimethyl)silyl]oxy]-2-methylenecyclohexylidene)ethylidene]-7a-methyloctahydro-1H-inden-1-yl]-2,2-difluoro-3-hydroxyhexanoate(4S,6R)-6-[(1R,3aR,7aR)-4-[(E)-2-((3S,5R)-3,5-bis[[tert-butyl(dimethyl)silyl]oxy]-2-methylenecyclohexylidene)ethylidene]-7a-methyloctahydro-1H-inden-1-yl]-3,3-difluoro-2-methyl-2,4-heptanediolethyl 2-bromo-2,2-difluoroacetate; Ethylbromodifluoroacetate; 2-bromo-2,2-difluoroacetic acid ethyl ester; bromodifluoroacetic acid ethyl ester
