Total assignments of 1H and 13C NMR spectra of isocatalpanol and a derivative of tecomaquinone.
Isocatalpanol and tecomaquinone I were obtained from roots of Lippia sidoides, a medicinal plant from northeast Brazil. Reduction of tecomaquinone I with NaBH4 yielded a new derivative. Structural elucidation was done on the basis of spectral data, mainly by high-field NMR and electron ionization mass spectrometry.
Santos
Allana Kellen L
AK
Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, CP 12200, 60451-970 Fortaleza, Ceará, Brazil.
Assunção
Jõao Carlos
JC
Fonseca
Aluisio M
AM
Pessoa
Otilia D L
OD
Monte
Francisco Jose Q
FJ
Lemos
Telma L G
TL
Braz-Filho
Raimundo
R
D002247:Carbon Isotopes; D006576:Heterocyclic Compounds, 4 or More Rings / Q000032:analysis* / Q000737:chemistry* / Q000592:standards; D032411:Lippia / Q000378:metabolism*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods* / Q000592:standards; D008968:Molecular Conformation; D011522:Protons; D012015:Reference Standards; D013764:Tetrahydronaphthalenes / Q000032:analysis* / Q000737:chemistry* / Q000592:standards
D002247:Carbon Isotopes; D006576:Heterocyclic Compounds, 4 or More Rings; D011522:Protons; D013764:Tetrahydronaphthalenes; C502973:isocatalpanol; C502974:tecomaquinone I