tazettine

(13bS)-4,4aβ,5,6-Tetrahydro-3β-methoxy-5-methyl-8H-[1,3]dioxolo[6,7][2]benzopyrano[3,4-c]indole-6aα(3H)-ol

(3S,13bS)-3β-Methoxy-5-methyl-3,4,4aβ,5,6,6a-hexahydro-8H-[1,3]dioxolo[6,7][2]benzopyrano[3,4-c]indole-6aα-ol

[3S,4aβ,6aα,13bS]-4,4a,5,6-Tetrahydro-3-methoxy-5-methyl-8H-[1,3]dioxolo[6,7][2]benzopyrano[3,4-c]indol-6a(3H)-ol