(1S,2R,3R,4S,5S,6S)-3,4-(isopropylidenedioxy)-5-hydroxy-6-benzoyl-7-(4'-methylphenylsulfonyl)-7-azabicyclo[4.1.0]heptane

(1R,2S,3S,4S,4aR,11bR)-1,2,3,4-Tetraacetoxy-1,3,4,4a,5,11b-hexahydro<1,3>dioxolo<4,5-j>phenanthridin-6(2H)-on

(3aS,3bR,10bR,12aR)-6-Benzyloxy-2,2-dimethyl-4-(toluene-4-sulfonyl)-3b,4,10b,12a-tetrahydro-3aH-1,3,7,9-tetraoxa-4-aza-dicyclopenta[a,h]phenanthren-5-one

N,N-dimethyl-4-<(tert-butyldimethylsilyl)oxy>-6-<(1R,4R,5S,6R)-4,5-(isopropylidenedioxy)-6-<(4'-methylphenylsulfonyl)amino>-2-cyclohexen-1-yl>-1,3-benzodioxole-5-carboxamide

((1R,2R,5R,6S)-2-Benzo[1,3]dioxol-5-yl-5,6-dihydroxy-cyclohex-3-enyl)-carbamic acid methyl ester