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organic compounds
The title molecule, methyl ![[alpha]](/logos/entities/alpha_rmgif.gif)
,10-bis(acetoxy)-4-(3-furanyl)-1,4,4a,5,6,6a,7,8,9,10,11,12b-dodecahydro-11- hydroxy-4a,7,9,9-tetramethyl-12,13-dioxo-7,11-methano-2H-cycloocta[f][2]benzopyran- 8-acetate, C31H38O11, consists of four six-membered rings (A, B, C and D) and a five-membered furan ring (E). The A ring is fused at C(2)-C(1)-C(10) to the B ring. The B/C and C/D rings are trans- and cis-fused, respectively. Rings A, B, C and D adopt conformations intermediate between twist 2T4 and boat B4,1, intermediate between half-chair 1H6 and envelope 1E, distorted chair 1C4 and half-chair 6H1, respectively. The crystal structure is stabilized by an intermolecular O-H
O hydrogen bond, three C-HO intermolecular hydrogen bonds and van der Waals interactions.
,10-bis(acetoxy)-4-(3-furanyl)-1,4,4a,5,6,6a,7,8,9,10,11,12b-dodecahydro-11- hydroxy-4a,7,9,9-tetramethyl-12,13-dioxo-7,11-methano-2H-cycloocta[f][2]benzopyran- 8-acetate, C31H38O11, consists of four six-membered rings (A, B, C and D) and a five-membered furan ring (E). The A ring is fused at C(2)-C(1)-C(10) to the B ring. The B/C and C/D rings are trans- and cis-fused, respectively. Rings A, B, C and D adopt conformations intermediate between twist 2T4 and boat B4,1, intermediate between half-chair 1H6 and envelope 1E, distorted chair 1C4 and half-chair 6H1, respectively. The crystal structure is stabilized by an intermolecular O-HO hydrogen bond, three C-HO intermolecular hydrogen bonds and van der Waals interactions.
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