首页> 美国卫生研究院文献>Acta Crystallographica Section E: Crystallographic Communications >Crystal structures of hibiscus acid and hibiscus acid dimethyl ester isolated from Hibiscus sabdariffa (Malvaceae)
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Crystal structures of hibiscus acid and hibiscus acid dimethyl ester isolated from Hibiscus sabdariffa (Malvaceae)

机译:芙蓉(芙蓉科)中的芙蓉酸和芙蓉酸二甲酯的晶体结构

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摘要

The biologically active title compounds have been isolated from Hibiscus sabdariffa plants, hibiscus acid as a dimethyl sulfoxide monosolvate [systematic name: (2S,3R)-3-hy­droxy-5-oxo-2,3,4,5-tetra­hydro­furan-2,3-di­carb­oxy­lic acid dimethyl sulfoxide monosolvate], C6H6O7·C2H6OS, (I), and hibiscus acid dimethyl ester [systematic name: dimethyl (2S,3R)-3-hy­droxy-5-oxo-2,3,4,5-tetra­hydro­furan-2,3-di­carboxyl­ate], C8H10O7, (II). Compound (I) forms a layered structure with alternating layers of lactone and solvent mol­ecules, that include a two-dimensional hydrogen-bonding construct. Compound (II) has two crystallographically independent and conformationally similar mol­ecules per asymmetric unit and forms a one-dimensional hydrogen-bonding construct. The known absolute configuration for both compounds has been confirmed.
机译:具有生物活性的标题化合物已从芙蓉植物中分离,木槿酸为二甲亚砜单溶剂化物[系统名称:(2S,3R)-3-hydroxy-5-oxo-2,3,4,5-tetrahydrofuran-2, 3-二羧酸二甲基亚砜单溶剂化物],C6H6O7·C2H6OS,(I)和芙蓉酸二甲酯[系统名称:二甲基(2S,3R)-3-羟基-5-氧代-2,3,4,5-四氢呋喃-2,3-二羧酸],C 8 H 10 O 7,(II)。化合物(I)形成具有交替的内酯和溶剂分子层的层状结构,其包括二维氢键结构。化合物(II)的每个不对称单元具有两个晶体学独立且构象相似的分子,并形成一维氢键结构。已经确认了两种化合物的已知绝对构型。

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