title: Chemical constituents from the seeds of Trifolium alexandrinum.
abstract: The ethanolic extract of the seeds of Trifolium alexandrinum afforded a new naturally occurring compound identified as methyl-alpha-glucose. The known compounds quercetin, kaempferol, apigenin 7-O-beta-D-glucoside and the nucleoside xanthosine were also isolated. The isolated compounds were identified by spectroscopic (UV, (1)H-, (13)C-NMR, DEPT, HMQC and HMBC) and spectrometric (ESI-MS/MS) analyses. The spectroscopic data of the isolated nucleoside were reported for the first time as a natural isolate.
authors.affiliation: Department of Phytochemistry and Plant Systematics, National Research Centre, Cairo, Egypt. sharrafali58@hotmail.com
authors.forename: M
authors.initials: M
authors.lastname: Sharaf
mesh_terms: D047310:Apigenin / Q000737:chemistry / Q000302:isolation & purification; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D044949:Kaempferols / Q000737:chemistry / Q000302:isolation & purification; D011794:Quercetin / Q000737:chemistry / Q000302:isolation & purification; D012263:Ribonucleosides / Q000737:chemistry / Q000302:isolation & purification; D012639:Seeds / Q000737:chemistry; D029921:Trifolium / Q000737:chemistry*; D014970:Xanthines
chemical_list: D005960:Glucosides; D044949:Kaempferols; D012263:Ribonucleosides; D014970:Xanthines; C006552:kaempferol; C057792:apigetrin; D047310:Apigenin; D011794:Quercetin; C005893:xanthosine