(6aS,7aR,10aS,10bR)-6a-hydroxy-9,12-dioxo-6a,8,9,10b-tetrahydro-6H,7H-7a,10a-(epoxyethano)furo[2',3':3,4]cyclopenta[1,2-c]chromen-3-yl benzoate

C-10,11-epimer brazilide A

dimethyl 2,2'-((3aS,9bR)-7-(benzoyloxy)-3a-(tert-butyldimethylsilyloxy)-3,3a,4,9b-tetrahydrocyclopenta[c]chromene-1,2-diyl)diacetate

dimethyl 2,2'-((6aS,7aS,8aS,8bS)-3-(benzoyloxy)-6a-((tert-butyldimethylsilyl)oxy)-6a,8b-dihydrooxireno[2',3':3,4]cyclopenta[1,2-c]chromene-7a,8a(6H,7H)-diyl)diacetate

dimethyl 2,2'-((6aS,7aR,8aR,8bS)-3-(benzoyloxy)-6a-((tert-butyldimethylsilyl)oxy)-6a,8b-dihydrooxireno[2',3':3,4]cyclopenta[1,2-c]chromene-7a,8a(6H,7H)-diyl)diacetate