Methyl 3-[(chloro-meth-oxy)carbon-yloxy]-7-hy-droxy-cholan-24-oate.
2013
The title compound, C27H43ClO6, is a derivative of ursodeoxycholic acid, in which the OH group at the 3-position is substituted by a chloromethoxycarbonyloxy substituent and the carboxylic acid group at the 24-position is methylated. The A and B rings are cis-fused, while all other rings are trans-fused. In the crystal, two adjacent molecules located along the b-axis direction are interlocked head-to-tail due to weak C—H⋯O hydrogen bonds. Therefore each molecule is linked to four neighbouring molecules by four C—H⋯O hydrogen bonds, with the OH group at the 7-position and the carbonyl O atom of the ester group acting as the acceptor sites.
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