(3aS,8aS)-5-Methoxy-3a-methyl-2,3,3a,8a-tetrahydro-furo[2,3-b]indole-8-carboxylic acid benzyl ester

(1S,4aS,9aR)-3-Hydroxy-6-methoxy-4a-methyl-1-vinyl-3,4,4a,9a-tetrahydro-1H-pyrano[3,4-b]indole-9-carboxylic acid benzyl ester

(2R,3S)-2-((S)-1-Hydroxy-allyl)-3-(2-hydroxy-ethyl)-5-methoxy-3-methyl-2,3-dihydro-indole-1-carboxylic acid benzyl ester

(2S,4R,5S,5aS,10bS)-4-(((tert-butyldimethylsilyl)oxy)methyl)-9-methoxy-10b-methyl-1,2,4,5,6,10b-hexahydro-5aH-2,5-epoxyoxepino[4,5-b]indol-5a-ol

benzyl (2R,4R,5R,5aR,10bS)-4-(((tert-butyldimethylsilyl)oxy)methyl)-9-methoxy-10b-methyl-1,2,4,5,5a,10b-hexahydro-6H-2,5-epoxyoxepino[4,5-b]indole-6-carboxylate