title: A new coumestan from Tephrosia calophylla.
abstract: A new coumestan, tephcalostan (1) has been isolated from the whole plant of Tephrosia calophylla BEDD. together with two known flavonoids, 7-O-methylglabranin (2) and kaempferol 3-O-beta-D-glucopyranoside (3). The structure of tephcalostan was elucidated as 5'-(R)-8, 9-methylenedioxy-5'-isopropenyl-4', 5'-dihydrofurano[2', 3':2, 3]coumestan by extensive one-and two-dimensional (1D- and 2D-)-NMR techniques including (1)H-(1)H correlation spectroscopy (COSY), heteronuclear single quantum coherence (HSQC), heteronuclear multiple bond connectivity (HMBC) and nuclear Overhauser enhancement spectroscopy (NOESY) experiments.
authors.affiliation: Natural Products Division, Department of Chemistry, Sri Venkateswara University, Paris, France.
authors.forename: Pennaka
authors.initials: P
authors.lastname: Hari Kishore
authors.forename: Mopuru
authors.initials: M
authors.lastname: Vijaya Bhaskar Reddy
authors.forename: Duvvuru
authors.initials: D
authors.lastname: Gunasekar
authors.forename: Madugula
authors.initials: M
authors.lastname: Marthanda Murthy
authors.forename: Cristelle
authors.initials: C
authors.lastname: Caux
authors.forename: Bernard
authors.initials: B
authors.lastname: Bodo
mesh_terms: D003374:Coumarins / Q000737:chemistry* / Q000302:isolation & purification*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D018514:Plant Structures; D031304:Tephrosia
chemical_list: D003374:Coumarins; D005419:Flavonoids; D010936:Plant Extracts