Crystal structure of 16-hy-droxy-4,4,10,13,14-penta-methyl-17-(6-methyl-hept-5-en-2-yl)-4,5,6,9,10,11,12,13,14,15,16,17-dodeca-hydro-1H-cyclo-penta-[a]phenanthren-3(2H)-one.
The title compound, C30H48O2, contains a fused four-ring triterpenoid system. In the mol-ecule, the two cyclo-hexane rings adopt a chair conformation and a twist boat conformation, respectively, the central cyclo-hexene ring adopts a half-chair conformation whereas the five membered ring adopts an envelope conformation. In the crystal, O-H⋯O hydrogen bonds between the hy-droxy and carbonyl groups of adjacent mol-ecules link the mol-ecules into supra-molecular chains propagating along the b-axis direction.
School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, People's Republic of China.
Jun-Jun
JJ
Ge
School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, People's Republic of China.
Pian
P
Chen
School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, People's Republic of China.
Xiao-Xia
XX
Ye
Melia azedarach; O—H⋯O hydrogen bonds; crystal structure; triterpenoid