(4S,5S)-5-benzoyloxymethyl-4(1-hydroxy-1-methylethyl)tetrahydrofuran-2-one
(1R,4S,5S)-4-benzoyloxymethyl-6,6-dimethyl-3-oxabicyclo<3.1.0>hexan-2-one
(4S,5S)-5-benzoyloxymethyl-4-isopropenyltetrahydrofuran-2-one
(4S,5S)-5-benzoyloxymethyl-4-(1-bromo-1-methylethyl)tetrahydrofuran-2-one
(4S,5S)-5-(tert-Butyl-diphenyl-silanyloxymethyl)-4-(1-hydroxy-1-methyl-ethyl)-dihydro-furan-2-one