(+)-5-(tert-butyl-dimethylsilanyloxy)-7-oxa-bicyclo[4.1.0]hept-3-ene-3-carboxylic acid methyl ester

4-(1-Ethoxy-ethoxy)-benzo[1,3]dioxole-5-carboxylic acid [(1R,5S,6R)-5-(tert-butyl-dimethyl-silanyloxy)-7-oxa-bicyclo[4.1.0]hept-3-en-3-yl]-amide

(3aS,3bR,12S,12aR)-6,12-dihydroxy-4-(4-methoxybenzyl)-2,2-dimethyl-3b,4,12,12a-tetrahydrobis([1,3]dioxolo)[4,5-c:4',5'-j]phenanthridin-5(3aH)-one

N-((1R,5S,6R)-5-((tert-butyldimethylsilyl)oxy)-7-oxabicyclo[4.1.0]hept-3-en-3-yl)-4-hydroxy-N-(4-methoxybenzyl)benzo[d][1,3]dioxole-5-carboxamide

(1S,2R,4aS,11bR)-1-((tert-butyldimethylsilyl)oxy)-2,7-dihydroxy-5-(4-methoxybenzyl)-1,4a,5,11b-tetrahydro-[1,3]dioxolo[4,5-j]phenanthridin-6(2H)-one