Tebbaa Mohamed, Akssira Mohamed, Elhakmaoui Ahmed, El Ammari Lahcen, Benharref Ahmed, Berraho Moha
Acta Crystallogr Sect E Struct Rep Online. 2010 Feb 13;66(Pt 3):o589-90. doi: 10.1107/S1600536810005064.
THE TITLE COMPOUND [SYSTEMATIC NAME: 2-(4a,8-dimethyl-1,2,3,4,4a,5,6,8a-octa-hydro-naphthalen-2-yl)acrylic acid anhydride], C(30)H(42)O(3), is a new isocostic anhydride which was synthesized from the aerial part of Inula Viscosa- (L) Aiton [or Dittrichia Viscosa- (L) Greuter]. The mol-ecule adopts an essentially linear shape with two terminal fused-rings bridged by the anhydride group. The external rings have the same conformation (half-chair) while each of the two inner rings has an almost ideal chair conformation. In the crystal, inter-molecular C-H⋯O inter-actions link the mol-ecules into a two-dimensional array in the bc plane.
标题化合物[系统名称：2-(4a,8-二甲基-1,2,3,4,4a,5,6,8a-八氢萘-2-基)丙烯酸酐]，C(30)H(42)O(3)，是一种新的异贝壳杉烯酸酐，由粘旋覆花[或粘毛旋覆花，(L)艾顿]的地上部分合成。分子呈基本线性形状，由酸酐基团桥连两个末端稠环。外环具有相同的构象(半椅式)，而两个内环中的每一个都具有几乎理想的椅式构象。在晶体中，分子间的C-H⋯O相互作用将分子连接成bc平面中的二维阵列。
