A furan-2-carbonyl C-glucoside and an alkyl glucoside from the parasitic plant, Dendrophthoe pentandra.

A new furan-2-carbonyl C -(6′- O -galloyl)-β-glucopyranoside (scleropentaside F, 1 ) and a new alkyl glucoside [butane-2,3-diol 2-(6′- O -galloyl)- O -β-glucopyranoside, 2 ] were isolated from the entire hemi-parasitic plant, Dendrophthoe pentandra growing on Tectona grandis together with ten known compounds including, benzyl- O -β- d -glucopyranoside ( 3 ), benzyl- O -α- l -rhamnopyranosyl-(1 → 6)-β- d -glucopyranoside ( 4 ), benzyl- O -β- d -apiofuranosyl-(1 → 6)-β- d -glucopyranoside ( 5 ), methyl gallate 3- O -β- d -glucopyranoside ( 6 ), methyl gallate 3- O -(6′- O -galloyl)-β- d -glucopyranoside ( 7 ), (+)-catechin ( 8 ), procyanidin B-1 ( 9 ) and procyanidin B-3 ( 10 ), bridelionoside A ( 11 ), and kiwiionoside ( 12 ). In addition, compounds 1, 3 – 9 were isolated from this species growing on the different host, Mangifera indica . The structure elucidations were based on physical data and spectroscopic evidence including 1D and 2D experiments. [ABSTRACT FROM AUTHOR]