7469-70-7 8-oxo-9-(3,4,5-trimethoxyphenyl)-5,5a,6,8,8a,9-hexahydrofuro[3',4':6,7]naphtho[2,3-d][1,3]dioxol-4-yl pyridine-2-carboxylate 38491-90-6 (5r,5ar,8as,9r)-8-oxo-9-(3,4,5-trimethoxyphenyl)-5,5a,6,8,8a,9-hexahydrofuro[3',4':6,7]naphtho[2,3-d][1,3]dioxol-5-yl acetate 37231-76-8 (1s,2s,4r,5r)-8,13-dihydroxy-4-methyl-7,12-dioxo-4,4',5,5',7,12-hexahydro-1h,1'h-spiro[1,4-methanoanthra[2,3-d]oxepine-2,2'-pyrrolo[2,3-b]pyrrol]-5-yl 4-c-acetyl-2,6-dideoxy-