Two new 5-deoxyflavones from Albizia odoratissima.
Two new 5-deoxyflavones, 7,8-dimethoxy-3',4'-methylenedioxyflavone (1) and 7,2',4'-trimethoxyflavone (2) together with a known flavone, 7,4'-dimethoxy-3'-hydroxyflavone (3) were isolated from the rootbark of Albizia odoratissima. The structures of these new compounds were elucidated by electrospray ionization mass spectrometry (ESI-MS) and 1D and 2D-NMR spectral studies including (1)H-(1)H correlation spectroscopy (COSY), heteronuclear single quantum coherence (HSQC), heteronuclear multiple bond connectivity (HMBC) and nuclear Overhauser enhancement spectroscopy (NOESY).
Koteswara Rao
Yerra
Y
Natural Products Division, Department of Chemistry, Sri Venkateswara University, India.
Vijaya Bhaskar Reddy
Mopur
M
Venkata Rao
Chunduri
C
Gunasekar
Duvvuru
D
Blond
Alan
A
Caux
Cristelle
C
Bodo
Bernard
B
D031289:Albizzia / Q000737:chemistry*; D004224:Diterpenes / Q000737:chemistry*; D019441:Plant Epidermis / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D012997:Solvents; D021241:Spectrometry, Mass, Electrospray Ionization; D013056:Spectrophotometry, Ultraviolet
D004224:Diterpenes; D012997:Solvents; C471333:jiufengdine; C471334:jiufengtine