Abstract

SANTOS, Marcelo H. dos; NAGEM, Tanus J.; SILVA, Marilda C. da  and  SILVA, Luiz G. F. e. Xanthones from Vismia latifolia. J. Braz. Chem. Soc. [online]. 2000, vol.11, n.5, pp. 537-539. ISSN 0103-5053.  http://dx.doi.org/10.1590/S0103-50532000000500017.

A new xanthone,1,4,8-trihydroxyxanthone (1,4,8-trihydroxy-9H-xanthen-9-one), was isolated from the roots of Vismia latifolia (Guttiferae). Four other known xanthones were isolated: 1,5-dihydroxy-8-methoxyxanthone, 1,7-dihydroxyxanthone, 1,6-dihydroxy-7-methoxyxanthone and 1,3,5,6-tetrahydroxyxanthone. The last two compounds were isolated for the first time from a Vismia species. The structures were established by UV, IR, MS, 1D and 2D NMR spectroscopic techniques.

Keywords : Vismia latifolia; Guttiferae; 1,4,8-trihydroxyxanthone; xanthones.