(R)-5-[(S)-3-(tert-Butyl-dimethyl-silanyloxy)-6-hydroxy-hexyl]-dihydro-furan-2-one

(R)-4-(tert-Butyl-dimethyl-silanyloxy)-6-((R)-5-oxo-tetrahydro-furan-2-yl)-hexanal

(R)-5-[(R)-3-(tert-Butyl-dimethyl-silanyloxy)-6-phenylsulfanyl-hexyl]-dihydro-furan-2-one