ethyl (2R,3S,4R)-5-benzyloxy-3,4-(dimethylmethylenedioxy)-2-hydroxy-3-(methylthio)carbonyl-2-(3-phenylpropyl)pentanoate

ethyl (2S,3S,4R)-5-benzyloxy-3,4-(dimethylmethylenedioxy)-2-hydroxy-3-(methylthio)carbonyl-2-(3-phenylpropyl)pentanoate

ethyl [3R,3(1R,2S),4S,8R]-3-[3-benzyloxy-1,2-(diethylmethylenedioxy)propyl]-8-(benzyloxymethyl)-6,6-dimethyl-1-oxo-2,5,7-trioxaspiro[3.4]octane-3-carboxylate

ethyl [3S,3(1R,2S),4S,8R]-3-[3-benzyloxy-1,2-(diethylmethylenedioxy)propyl]-8-(benzyloxymethyl)-6,6-dimethyl-1-oxo-2,5,7-trioxaspiro[3.4]octane-3-carboxylate

ethyl [2S,2(1R,2S),3S,4R]-5-benzyloxy-2-[3-benzyloxy-1,2-(diethylmethylenedioxy)propyl]-3,4-(dimethylmethylenedioxy)-2-hydroxy-3-(methoxycarbonyl)pentanoate