title: A new monodesmosidic triterpenoid saponin from the leaves of Pometia pinnata.
abstract: Phytochemical investigation of the leaves of Pometia pinnata resulted in the isolation of a new triterpenoid saponin (1), together with a known compound, kaemferol 3-O-alpha-L-rhamnopyranoside (2). The structure of 1 was established as 3-O-[alpha-L-arabinofuranosyl-(1-->4)-alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranosyl]-hederagenin. The structure elucidation of the isolated compounds was based primarily on 1D- and 2D-NMR techniques, including 1H and 13C NMR spectra, DEPT, and by 2D COSY, HMQC, HMBC and TOCSY experiments.
authors.affiliation: H.E.J Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan. faryalhej@yahoo.com
authors.forename: Faryal Vali
authors.initials: FV
authors.lastname: Mohammad
authors.forename: Mushtaq
authors.initials: M
authors.lastname: Noorwala
authors.forename: Viqar Uddin
authors.initials: VU
authors.lastname: Ahmad
authors.forename: Aqib
authors.initials: A
authors.lastname: Zahoor
authors.forename: Nordin H J
authors.initials: NH
authors.lastname: Lajis
mesh_terms: D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry; D029631:Sapindaceae / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D012503:Saponins; D014315:Triterpenes