(2S,3S,4S,5R)-3,4-Bis-(tert-butyl-dimethyl-silanyloxy)-2-dimethoxymethyl-5-methyl-tetrahydro-furan

(2R,3S,4S)-3,4-Bis-(tert-butyl-dimethyl-silanyloxy)-2-methyl-3,4-dihydro-2H-pyran

(-)-4-epi-pyrenolide D

5-{[(2R,3S,4S,5R)-3,4-Bis-(tert-butyl-dimethyl-silanyloxy)-5-methyl-tetrahydro-furan-2-yl]-hydroxy-methyl}-5H-furan-2-one

(2S,3S,4S,5R)-3,4-Bis-(tert-butyl-dimethyl-silanyloxy)-5-methyl-tetrahydro-furan-2-carbaldehyde