morin and casuarictin

To study the chemical constituents of the leaves of Psidium guajava.. The chemical constituents were isolated by column chromatography on silica gel, Sephadex LH-20 and MPLC. Their chemical structures were elucidated on the basis of special analysis.. Seven compounds were isolated from n-butyl alcohol fraction, whose structures were elucidated as morin-3-O-α-L-arabopyranoside (1), morin-3-O-α-L-iyxopyranoside (2), 2,6-dihydroxy-4-O-β-D-glucopyranosyl-benzophenone (3), casuarictin (4),2,6-dihydroxy-3,5-dimethyl-4-O-(6"-O-galloyl-β-D-glucopyranosyl)-benzophenone(5), globulusin A(6), and kaempferol-3-O-β-D-(6"-galloyl) galactopyranoside (7).. Compounds 3 and 5 ~ 7 are isolated from this plant for the first time.

Topics: Benzophenones; Biphenyl Compounds; Flavonoids; Gallic Acid; Kaempferols; Phytochemicals; Plant Leaves; Psidium