Crystal structure of 1,7-dihydroxyxanthone from <Emphasis Type="Italic">Weddellina squamulosa</Emphasis> Tul期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Crystal structure of 1,7-dihydroxyxanthone from <Emphasis Type="Italic">Weddellina squamulosa</Emphasis> Tul

Authors:	Email author" target="_blank">Lucília?Kato Email author Cecília?Maria?Alves?de?Oliveira Ivo?Vencato Carlito?Lauriucci

Institution:	(1) Instituto de Química, Universidade Federal de Goiás, Campus Samambaia, Goiânia, GO, Brazil;(2) Instituto de Física, Universidade Federal de Goiás, Goiânia, GO, Brazil

Abstract:	1,7-dihydroxyxanthone was isolated from Weddellina squamulosa Tul. (Podostemaceae) and the crystal structure has been determined (C₁₃H₈O₄), Mr = 228.19, a = 4.902(1), b = 13.593(4), c = 14.740(2) Å, space group P2₁2₁2₁, Z = 4, and V = 982.2(4) Å³. The 1,7-dihydroxyxanthone molecule is planar with a strong intramolecular H-bond O–HsO 2.607(4) Å]. The molecular packing is done through hydrogen bonds O–HsO 2.786(4) Å], forming channels along the direction parallel to the a-axis.

Keywords:	Weddellina squamulosa Tul 1 7-dihydroxyxanthone biological activities crystal structure
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