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6-Deoxyjacareubin
A C Doriguetto1, M H Santos, J A Ellena
1Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369 - CEP 13560-970, São Carlos, SP, Brazil. dorigue@if.sc.usp.br
Abstract:
The natural compound 5,10-dihydroxy-2,2-dimethylpyrano[3,2-b]xanthen-6(2H)-one (6-deoxyjacareubin), C(18)H(14)O(5), was isolated from leaves of Vismia latifolia (Guttiferae family). The compound has four six-membered rings. The molecule has two planar benzenoid and one planar pyranoid ring, plus a pyranoid ring in a distorted chair conformation. The crystal is stabilized by one intra- and one intermolecular hydrogen bond.