((3R,4R,4aS,5S,6S,8S,8aS)-5,6,8-Trihydroxy-3-methyl-1-oxo-octahydro-isochromen-4-yl)-carbamic acid benzyl ester

[(3R,4R,4aS,5S,6S)-5,6-Bis-(tert-butyl-dimethyl-silanyloxy)-3-methyl-1-oxo-3,4,4a,5,6,7-hexahydro-1H-isochromen-4-yl]-carbamic acid benzyl ester

<3R-(3α,4α,4aβ,5β,6α)>-(3,4,4a,5,6,7-hexahydro-5,6-dihydroxy-3-methyl-1-oxo-1H-2-benzopyran-4-yl)carbamic acid phenylmethyl ester

((3R,4R,4aS,5S,6S)-5,6-Dihydroxy-3-methyl-1-oxo-3,4,4a,5,6,7-hexahydro-1H-isochromen-4-yl)-carbamic acid benzyl ester