Crystalline Structure of Mangiferin, a C-Glycosyl-Substituted 9H-Xanthen-9-one Isolated from the Stem Bark of Mangifera indica
✍ Scribed by José W. da Cruz Jr.; Lucas R. de Moraes; Marcelo H. dos Santos; Geraldo Alves da Silva; Maisa R. P. L. Brigagão; Javier Ellena; Antonio C. Doriguetto
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- German
- Weight
- 375 KB
- Volume
- 91
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
The crystalline structure of mangiferin (=2‐β‐D‐glucopyranosyl‐1,3,6,7‐tetrahydroxy‐9__H__‐xanthen‐9‐one; 1), a biologically active xanthenone C‐glycoside, isolated from the stem bark of Mangifera indica (Anacardiaceae), was unambiguously determined by single‐crystal X‐ray diffraction (XRD). The crystal structure is summarized as follows: triclinic, __P__1, a=7.6575(5), b=11.2094(8), c=11.8749(8) Å, α=79.967(5), β=87.988(4), γ=72.164(4)°, V=955.3(1) Å^3^, and Z=2. The structure also shows two molecules in the asymmetric unit cell and five crystallization H~2~O molecules. The packing is stabilized by several intermolecular H‐bonds involving either the two symmetry‐independent mangiferin molecules 1a and 1b, or the H~2~O ones.