Macrocalyxin I.
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.
Shi
Hao
H
Department of Chemistry, Zhejiang University, Hangzhou 310027, People's Republic of China.
Pan
Yuan Jiang
YJ
Wu
Shi Hua
SH
Zhang
Xiao Xiang
XX
D018360:Crystallography, X-Ray; D004224:Diterpenes / Q000737:chemistry*; D006860:Hydrogen Bonding; D008958:Models, Molecular; D010946:Plants, Medicinal / Q000737:chemistry*
D004224:Diterpenes; C450026:macrocalyxin I