title: Chemosystematic significance of flavonoids isolated from Diplotaxis acris (Brassicaceae) and related taxa.
abstract: The chemosystematic relationship of four Diplotaxis species; Diplotaxis acris, Diplotaxis erucoides, Diplotaxis harra and Diplotaxis muralis were surveyed from the flavonoids point of view. These species were found to produce 33 flavonoids (7 flavones and 26 flavonols), including 11 compounds were isolated in the present study from D. acris. Among them, seven flavonoids were identified for the first time; luteolin (4), kaempferol (8), kaempferol 3-O-β-glucopyranoside-7-O-α-rhamnopyranoside (13), quercetin 3-O-β-glucopyranoside (16), quercetin 7-O-β-glucopyranoside (20), isorhamnetin (22) and isorhamnetin 3-O-β-glucopyranoside-7-O-α-rhamnopyranoside (32). Their structures were recognized on the basis of chemical and spectroscopic techniques (1D & 2D NMR, UV, EI & ESI/MS). The isolated flavonoids may provide useful taxonomic characters at the infraspecific levels of classification where the flavonoid profile of D. acris and D. harra is similar and different from the other species.
authors: a Department of Phytochemistry and Plant Systematics , National Research Centre , Giza , Egypt.
authors: Sameh R
authors: SR
authors: Hussein
authors: a Department of Phytochemistry and Plant Systematics , National Research Centre , Giza , Egypt.
authors: Mona M
authors: MM
authors: Marzouk
authors: a Department of Phytochemistry and Plant Systematics , National Research Centre , Giza , Egypt.
authors: Mona E S
authors: ME
authors: Kassem
authors: a Department of Phytochemistry and Plant Systematics , National Research Centre , Giza , Egypt.
authors: Rasha R
authors: RR
authors: Abdel Latif
authors: b Department of Pharmacognosy , National Research Centre , Giza , Egypt.
authors: Reda S
authors: RS
authors: Mohammed
mesh_terms: D019607:Brassicaceae / Q000737:chemistry*; D002965:Classification; D047309:Flavones / Q000737:chemistry / Q000302:isolation & purification; D005419:Flavonoids / Q000737:chemistry* / Q000145:classification / Q000302:isolation & purification; D044948:Flavonols / Q000737:chemistry / Q000302:isolation & purification; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification; D044949:Kaempferols / Q000737:chemistry / Q000302:isolation & purification; D015394:Molecular Structure; D011794:Quercetin / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification; D013057:Spectrum Analysis
chemical_list: D047309:Flavones; D005419:Flavonoids; D044948:Flavonols; D005960:Glucosides; D044949:Kaempferols; C110311:quercetin 7-O-glucopyranoside; D011794:Quercetin; C110309:quercetin 3-O-glucopyranoside
keywords: Brassicaceae; Brassiceae; Diplotaxis; chemotaxonomy; flavonoid patterns