A new antifungal phenolic glycoside derivative, iridoids and lignans from Alibertia sessilis (vell.) k. schum. (Rubiaceae)

Journal of the Brazilian Chemical Society

Viviane C. Da Silva²  Vanderlan Da S. Bolzani²  Maria C. M. Young¹  Márcia N. Lopes² 

[1] ,Universidade Estadual Paulista Instituto de Química Departamento de Química OrgânicaAraraquara SP ,Brazil

关键词: Rubiaceae;    Alibertia sessilis;    phenolics;    iridoids;    antifungal;   

DOI  :  10.1590/S0103-50532007000700017

来源: SciELO

【 摘 要 】

A new antifungal phenolic glycoside, 3,4,5-trimethoxyphenyl-1-O-beta-D-(5-O-syringoyl)apiofuranosyl-(1->6)-beta-D-glucopyranoside (1), together with four known iridoids, geniposidic acid (2), geniposide (3), 6alpha-hydroxygeniposide (4) and 6beta-hydroxygeniposide (5); two lignans, (+)-lyoniresinol-3alpha-O-beta-D-glucopyranoside (6), (-)-lyoniresinol-3alpha-O-beta-D-glucopyranoside (7); and two phenolic acids, chlorogenic (8) and salicylic acids (9) and D-manitol (10), were isolated from the ethanolic extract of the stems of Alibertia sessilis. Structures of 1 and of the known compounds were determined by spectroscopic analysis. All compounds isolated were evaluated for their antifungal activities against two phytopathogenic fungi strains Cladosporium cladosporioides and C. sphaerospermum by direct bioautography.

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