Microwave assisted synthesis, crystal structure and modelling of cytotoxic dehydroacetic acid enamine: a natural alkaloid from Fusarium incarnatum (HKI0504)
作者:Julio A. Seijas、José Crecente-Campo、Xesús Feás、M. Pilar Vázquez-Tato
DOI:10.1039/c4ra00582a
日期:——
(HKI0504), was developed from dehydroacetic acid and urea under solvent-free microwave irradiation. The analysis of the co-crystal structure revealed an asymmetric unit formed by a pair of molecules. Each molecule is joined by two different hydrogen bonds to another two molecules, ordered as four-unit clusters linked by π-stacking, assembled in a brick like layered structure in a set of parallel walls
一种新颖,快速,有效的合成天然抗增殖和细胞毒性的(3 E)-3-(1-氨基亚乙基)-6-甲基-3,4-二氢-2 H-吡喃-2,4-二酮的方法镰刀镰刀菌分离产品(HKI0504)是在无溶剂微波辐射下由脱氢乙酸和尿素制成的。对共晶体结构的分析揭示了由一对分子形成的不对称单元。每个分子通过两个不同的氢键连接至另外两个分子,这些分子以π堆积的形式排列成四单元簇,并以砖状层状结构组装在一组平行的壁中。此外,晶体结构的优选互变异构体是烯胺形式。NBO计算分析证实了这一点,该分析概述了烯胺共振的贡献,并通过Hirshfeld表面和G09平衡计算计算了涉及的非共价相互作用。