4-羟基-3-[(2E)-3-(3,4,5-三甲氧基苯基)丙-2-烯酰基]-2H-色原酮-2-酮
4-Hydr-oxy-3-[(2E)-3-(3,4,5-trimethoxy-phen-yl)prop-2-eno-yl]-2H-chromen-2-one.
作者信息
Mechi Lassaad, Chtiba Samar, Hamdi Naceur, Ben Hassen Rached
机构信息
Unité de Chimie des Matériaux, ISSBAT, Université de Tunis-ElManar, 9 Avenue Dr Zoheir SAFI, 1006 Tunis, Tunisia.
出版信息
Acta Crystallogr Sect E Struct Rep Online. 2009 Jun 20;65(Pt 7):o1652-3. doi: 10.1107/S1600536809022569.
A new chalcone of the coumarin, C(21)H(18)O(7), containing an annulated α-pyrone ring, was obtained by condensation of the borate complex of ac-yl(hydr-oxy)coumarin with trimethoxy-benzaldehyde. The structure exhibits intra-molecular hydrogen bonding between the hydroxyl oxygen and the ketonic oxygen in the coumarin group. The bicyclic coumarin fragment and the benzene ring form a dihedral angle of 17.1 (4)°. The crystal packing involves dimers inter-connected by C-H⋯O hydrogen bonding.
一种新的香豆素查耳酮，化学式为C(21)H(18)O(7)，含有一个稠合的α-吡喃酮环，它是通过酰基（羟基）香豆素的硼酸盐配合物与三甲氧基苯甲醛缩合得到的。该结构在香豆素基团中的羟基氧和酮基氧之间呈现分子内氢键。双环香豆素片段和苯环形成的二面角为17.1 (4)°。晶体堆积涉及通过C-H⋯O氢键相互连接的二聚体。
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