title: Detailed 1H and 13C NMR structural assignment of three biologically active lignan lactones.
abstract: In this paper we present a complete 1H and 13C NMR spectral analysis of three lignan lactones (methylpluviatolide, dimethylmatairesinol and hinokinin) by the use of techniques such as COSY, HMQC, HMBC and J-resolved. Complete assignment and all homonuclear hydrogen coupling constant measurements were performed, providing enough data also to the confirmation of the relative stereochemistry.
authors.affiliation: Departamento de Química da Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes 3900, 14040-901 Ribeirão Preto, SP, Brazil. vheleno@usp.br
authors.forename: Vladimir Constantino Gomes
authors.initials: VC
authors.lastname: Heleno
authors.forename: Rosangela
authors.initials: R
authors.lastname: da Silva
authors.forename: Susimaire
authors.initials: S
authors.lastname: Pedersoli
authors.forename: Sérgio
authors.initials: S
authors.lastname: de Albuquerque
authors.forename: Jairo Kenupp
authors.initials: JK
authors.lastname: Bastos
authors.forename: Márcio Luis Andrade E
authors.initials: ML
authors.lastname: Silva
authors.forename: Paulo Marcos
authors.initials: PM
authors.lastname: Donate
authors.forename: Gil Valdo José
authors.initials: GV
authors.lastname: da Silva
authors.forename: João Luis Callegari
authors.initials: JL
authors.lastname: Lopes
mesh_terms: D015107:4-Butyrolactone / Q000031:analogs & derivatives* / Q000737:chemistry; D052117:Benzodioxoles; D002247:Carbon Isotopes / Q000737:chemistry; D004149:Dioxoles / Q000737:chemistry*; D007783:Lactones / Q000737:chemistry*; D017705:Lignans / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D011522:Protons
chemical_list: D052117:Benzodioxoles; D002247:Carbon Isotopes; D004149:Dioxoles; D007783:Lactones; D017705:Lignans; D011522:Protons; C508933:dimethylmatairesinol; C508932:methylpluviatolide; C475934:hinokinin; D015107:4-Butyrolactone