(7aR)-1-[(2R,5S,E)-6-Hy-droxy-5,6-dimethyl-hept-3-en-2-yl]-7a-methyl-hexa-hydro-1H-inden-4(2H)-one.

ABSTRACT: The chiral title compound, C(19)H(32)O(2), 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 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 mol-ecules 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 supra-molecular structure parallel to (010). The absolute configuration was established according to the configuration of the starting material.

SUBMITTER: Rivadulla ML 

PROVIDER: S-EPMC3569753 | biostudies-literature | 2013 Feb

REPOSITORIES: biostudies-literature