title: Biflavonoids from Cycas beddomei.
abstract: Chemical investigation on the constituents of the cones of Cycas beddomei has resulted in the isolation of a new biflavonoid, 2,3-dihydro-4'''-O-methyl amentoflavone, along with 2,3,2'',3''-tetrahydro hinokiflavone, 2,3,2'',3''-tetrahydro amentoflavone, 2,3-dihydro amentoflavone. The last two compounds were not reported earlier from this plant. The structure of the new compound was established by detailed analysis of its spectral (mainly 1D and 2D NMR) data.
authors.affiliation: Organic Chemistry Division I, Indian Institute of Chemical Technology, Hyderabad, India. biswanathdas@yahoo.com
authors.forename: Biswanath
authors.initials: B
authors.lastname: Das
authors.forename: Gurram
authors.initials: G
authors.lastname: Mahender
authors.forename: Yerra
authors.initials: Y
authors.lastname: Koteswara Rao
authors.forename: Anabathula
authors.initials: A
authors.lastname: Prabhakar
authors.forename: Bharatam
authors.initials: B
authors.lastname: Jagadeesh
mesh_terms: D044946:Biflavonoids / Q000737:chemistry* / Q000302:isolation & purification*; D029784:Cycas; D035261:Plant Components, Aerial; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D044946:Biflavonoids; D010936:Plant Extracts