(7aR)-1-[(2R,5S,E)-6-Hydroxy-5,6-dimethylhept-3-en-2-yl]-7a-methylhexahydro-1H-inden-4(2H)-one

(7aR)-1-[(2R,5S,E)-6-Hydroxy-5,6-dimethylhept-3-en-2-yl]-7a-methylhexahydro-1H-inden-4(2H)-one

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The chiral title compound, C19H32O2, contains a [4.3.0]-bicyclic moiety in which the shared C—C bond presents a trans configuration and a side chain in which the C=C double bond shows an E conformation.The conformations of five- and six-membered rings are envelope (with vush gloss bullet vibrator the bridgehead atom bearing the methyl substituent as the flap) and chair, respectively, with a dihedral angle of 4.

08 (17)° between the idealized planes of the rings.In the crystal, the molecules are self-assembled via classical O—H.O hydrogen bonds, forming chains along [112]; these chains are linked by weak non-classical C—H.O hydrogen bonds, giving a two-dimensional supramolecular structure dv0426-301 parallel to (010).

The absolute configuration was established according to the configuration of the starting material.