Abstract
The title compound, 4-(3-furyl)-1,4,4a,5,6,6a,7,8α,9,10,11α,12-dodecahydro-4a,7,9,9-tetramethyl-2,10,13-trioxo-7,11-methano-2H-cycloocta[f][2]benzopyran-8-hydroxyacetic acid methyl ester (C27H32O8), has for the first time been isolated from Lansium domesticum, Correa. The six-membered rings adopt boat, chair, distorted sofa and half-chair conformations. The furan ring is planar. The furan substituent and hydroxyacetate group are attached equatorially to the swietenine skeleton. The crystal structure is stabilized by C—H⋯O interactions.
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