(3R,4S,6R)-1,1-diethoxy-3-hydroxy-4-methyl-5-oxo-6-[(tert-butyl-dimethylsilyl)oxy]-6-phenylhexane

allyl (5R,6S,8R)-5-tosyloxy-6-methyl-7-oxo-8-[(tert-butyldimethylsilyl)oxy]-8-phenyl-oct-2(E)-enoate