title: Alkaloids from Toddalia aculeata.
abstract: Two alkaloids N-methyl-4-hydroxy-7-methoxy-3-(2,3-epoxy-3-methylbutyl)-1H-quinolin-2-one (1) and 3-(2,3-dihydroxy-3-methylbutyl)-4,7-dimethoxy-1-methyl-1H-quinolin-2-one (2a) have been isolated from CH(2)Cl(2):methanol (1:1) and methanol extracts of leaves and stems of Toddalia aculeata. Their structures along with that of 15 other compounds, of which three are isolated for the first time from genus Toddalia, were established by their detailed spectral studies including 2D NMR viz. (1)H-(1)H COSY, (1)H-(13)C COSY, and HMBC.
authors.affiliation: Department of Chemistry, University of Delhi, Delhi 110 007, India. jainsc48@hotmail.com
authors.forename: Subhash C
authors.initials: SC
authors.lastname: Jain
authors.forename: Mukesh K
authors.initials: MK
authors.lastname: Pandey
authors.forename: Ravi K
authors.initials: RK
authors.lastname: Upadhyay
authors.forename: Rohtash
authors.initials: R
authors.lastname: Kumar
authors.forename: Geeta
authors.initials: G
authors.lastname: Hundal
authors.forename: Maninder S
authors.initials: MS
authors.lastname: Hundal
mesh_terms: D000470:Alkaloids / Q000737:chemistry* / Q000302:isolation & purification; D008401:Gas Chromatography-Mass Spectrometry; D008968:Molecular Conformation; D019906:Nuclear Magnetic Resonance, Biomolecular; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D015363:Quinolones / Q000737:chemistry* / Q000302:isolation & purification; D027821:Rutaceae / Q000737:chemistry*
chemical_list: C512953:3-(2,3-dihydroxy-3-methylbutyl)-4,7-dimethoxy-1-methyl-1H-quinolin-2-one; D000470:Alkaloids; C512952:N-methyl-4-hydroxy-7-methoxy-3-(2,3-epoxy-3-methylbutyl)-1H-quinolin-2-one; D015363:Quinolones