title: Gallic acid esters from the stem bark of Mimusops elengi L.
abstract: Phytochemical investigation of the ethanolic extract of the stem bark of Mimusops elengi L. (Sapotaceae) led to the isolation of new gallic acid esters, characterised as phenyl propanoxyl gallate (1), beta-D-glucopyranosyl (6'-->1'')-beta-D-glucopyranosyl-4''-(4''-ethylphenyl) gallate (2), 2'-(1'''-geranyloxy)-beta-D-glucopyranosyl (6'-->1'')-beta-D-glucopyranosyl-4''-phenoxy gallate (3), beta-D-glucopyranosyl (6'-->1'')-beta-D-glucopyranosyl 3,4,5-trihydroxy benzoate (4), beta-D-glucopyranosyl-(6'-->1'')-beta-D-glucopyranosyl-4''-(4'''-n-butylphenyl) 3,4,5-trihydroxy benzoate (5), beta-D-glucopyranosyl(6'-->1'')-beta-D-rhamnosyl 3,4,5-trihydroxy benzoate (6) and beta-D-(2'-phenyl glucopyranosyl)-(6'-->1'')-(2'', 4''-diphenylrhamnopyranosyl)-3,4,5-trihydroxylbenzoate (7), along with the known compounds: farnon-3-one, stigmasta-5-en-3-beta-ol, olean-18-en-2-one-3-ol, lup-20(29)-en-3beta-ol and stigmasta-5-en-3beta-D-glucopyranoside. Their structures were elucidated on the basis of spectroscopic analyses and chemical reactions.
authors.affiliation: Department of Chemistry, Faculty of Science, Jamia Hamdard (Hamdard University), New Delhi-110 062, India.
authors.forename: Nida
authors.initials: N
authors.lastname: Akhtar
authors.forename: Mohd
authors.initials: M
authors.lastname: Ali
authors.forename: Mohd Sarwar
authors.initials: MS
authors.lastname: Alam
mesh_terms: D005707:Gallic Acid / Q000031:analogs & derivatives / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D032130:Mimusops / Q000737:chemistry*; D015394:Molecular Structure; D024301:Plant Bark / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry*
chemical_list: D010936:Plant Extracts; D005707:Gallic Acid