Flavonoids from Tephrosia calophylla.
Two new flavanones, (2S)-5-hydroxy-7,4'-di-O-(gamma,gamma-dimethylallyl)flavanone (1) and 6-hydroxy-E-3-(2,5-dimethoxybenzylidine)-2',5'-dimethoxyflavanone (2), together with three known compounds, tephrowatsin C, afrormosin and kaempferol 3-O-beta-D-glucopyranoside were isolated from the roots of Tephrosia calophylla. The structures of 1 and 2 were established by extensive 2D NMR spectral studies.
Natural Products Division, Department of Chemistry, Sri Venkateswara University, Tirupati 517502, India.
Ramireddy V Narahari
RV
Reddy
Shaik I
SI
Khalivulla
Bandi A K
BA
Reddy
Mopuru V Bhaskar
MV
Reddy
Duvvuru
D
Gunasekar
Alexandre
A
Deville
Bernard
B
Bodo
D047309:Flavones / Q000737:chemistry*; D015394:Molecular Structure; D031304:Tephrosia / Q000737:chemistry*
D047309:Flavones