Abstract
The title compound, 1-(3-furyl)-4b,7,7,10a,12a-pentamethyl-1,6a,7,10a,10b,11,12,12a-octahydronaphtho[2,1-f]oxireno[2,3-d]isochromene-3,5,8(3aH,4bH,6H)-trione, C26H30O6, has been isolated from Xylocarpus granatum Koenig. All four rings are trans-fused. The four six-membered rings adopt distorted sofa, chair, twist-boat and half-chair conformations. The furan substituent is planar and attached equatorially to the lactone ring of the gedunin skeleton. The crystal structure is stabilized by C—H⋯O intramolecular and intermolecular interactions.
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More From: Acta Crystallographica Section E Structure Reports Online
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