6α-Acetoxyepoxyazadiradione

Abstract

The title limonoid compound [systematic name: (8S*,10R*)-17-(3-fur­yl)-4,4,8,10,13-penta­methyl-3,16-dioxo-6,7,9,11,12,17-hexa­hydro-14,15-ep­oxy-5H-cyclo­penta­[a]phenanthrene-6α,7α-diyl diacetate], C30H36O8, was isolated from Chisocheton siamensis. The mol­ecule contains four trans-fused rings. The cyclo­hexene ring adopts a screw-boat conformation, the two cyclo­hexane rings are in standard chair and boat conformations, and the cyclo­pentane ring is in an envelope conformation. Weak intra­molecular C—H⋯O inter­actions generate S(5) and S(6) ring motifs. A weak C—H⋯O inter­molecular inter­action connects the mol­ecules into dimers.