Fun Hoong-Kun, Pakathirathien Charoen, Karalai Chatchanok, Chantrapromma Suchada
Acta Crystallogr Sect E Struct Rep Online. 2010 Oct 23;66(Pt 11):o2897-8. doi: 10.1107/S1600536810042078.
The title compound, C(20)H(30)O(4), is a dolabrane diterpenoid isolated from Ceriops tagal, in which one of the three fused cyclo-hexane rings adopts a half-chair conformation and the other two are in the standard chair conformations. The hy-droxy-methyl-idene substituent is attached to the half-chair cyclo-hexane. An intra-molecular O-H⋯O hydrogen bond generate an S(6) ring motif. In the crystal, mol-ecules are arranged into screw chains along the [001] direction. The crystal is stabilized by O-H⋯O hydrogen bonds and weaker C-H⋯O inter-actions.
标题化合物C(20)H(30)O(4)是从角果木中分离得到的一种朵拉烷二萜，其中三个稠合环己烷环中的一个呈半椅式构象，另外两个呈标准椅式构象。羟基亚甲基取代基连接在半椅式环己烷上。分子内O-H⋯O氢键形成一个S(6)环模式。在晶体中，分子沿[001]方向排列成螺旋链。晶体通过O-H⋯O氢键和较弱的C-H⋯O相互作用得以稳定。
