title: 1H and 13C NMR assignments of two new isomeric bisbenzylisoquinoline alkaloids from Cissampelos sympodialis Eichl. (Menispermaceae).
abstract: des-7'-O-methylroraimine (compound 1) and epi-des-7'-O-methylroraimine (compound 2), two new isomeric bisbenzylisoquinoline alkaloids were isolated and characterized as a mixture from the rhizomes of Cissampelos sympodialis Eichl. The unambiguous structural elucidation of both isomers was performed with the aid of HR-ESI-MS, FT-IR, and NMR techniques including COSY, HMQC, HMBC, and NOESY.
authors: Alexsandro Fernandes
authors: AF
authors: Marinho
authors: Eduardo
authors: E
authors: de Jesus Oliveira
authors: Josean Fechine
authors: JF
authors: Tavares
authors: Raimundo
authors: R
authors: Braz Filho
authors: Jose Maria
authors: JM
authors: Barbosa-Filho
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D044182:Benzylisoquinolines / Q000737:chemistry / Q000302:isolation & purification*; D002247:Carbon Isotopes; D009682:Magnetic Resonance Spectroscopy / Q000592:standards; D029583:Menispermaceae / Q000737:chemistry*; D015394:Molecular Structure; D011522:Protons; D012015:Reference Standards
chemical_list: D000470:Alkaloids; D044182:Benzylisoquinolines; D002247:Carbon Isotopes; D011522:Protons