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Macrocalyxin I
Hao Shi1, Yuan Jiang Pan, Shi Hua Wu
1Department of Chemistry, Zhejiang University, Hangzhou 310027, People's Republic of China.
Acta Crystallographica. Section C, Crystal Structure Communications
|January 10, 2002
Abstract:
The title compound, 2-[1,2,3,4,4a,4b,5,6,7,8,8a,9-dodecahydro-7-hydroxy-4b,8,8-trimethylphenanthren-2-yl]propenoic acid, C20H30O3, is a naturally occurring diterpenoid which was isolated from Rabdosia macrocalyx. The hydroxy and carboxy groups, which are located at the two ends of the molecule, both serve as simultaneous hydrogen-bond donors and acceptors. Two intermolecular O-H...O hydrogen bonds are present and link each molecule to four neighbours, thus forming an extensive hydrogen-bond network within the crystal.