title: Polyphenols from Cornulaca monacantha.
abstract: The aerial parts of the Egyptian herb Cornulaca monacantha have yielded two new galloyltannin analogs (named monacanthin A and monacanthin B) characterized by protoctechuoyl moiety at C-6, and also a new flavonol glycoside, quercetin-4'-O-beta-D-galactoside. The structures of the new compounds were established by conventional analytical methods and confirmed by spectral analyses. Two known flavonoids, luteolin-7-O-rhamnoside, luteolin-7-O-glucoside, and two known gallotannins, penta-O-galloyl-beta-D-glucose and 1,2,3,6-tetra-O-galloyl-beta-D-glucose were also isolated.
authors.affiliation: Chemistry of Tanning Materials and Proteins Department, National Research Centre, Cairo, Egypt.
authors.forename: F E
authors.initials: FE
authors.lastname: Kandil
authors.forename: M H
authors.initials: MH
authors.lastname: Grace
mesh_terms: D019663:Chenopodiaceae / Q000737:chemistry*; D005419:Flavonoids; D009682:Magnetic Resonance Spectroscopy; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification*; D011108:Polymers / Q000737:chemistry / Q000302:isolation & purification*; D059808:Polyphenols; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D005419:Flavonoids; D010636:Phenols; D011108:Polymers; D059808:Polyphenols