Flavones from Andrographis viscosula.
Two new 2'-oxygenated flavones, 5,7,2'-trimethoxyflavone (1). and 5,7,2',4',6'-pentamethoxyflavone (2). were isolated from the whole plant of Andrographis viscosula along with three known flavones, echioidinin (3). 5,2',6'-trihydroxy-7-methoxyflavone (4). and echioidin (5). The structures of these compounds were elucidated on the basis of 1D and 2D NMR spectral studies.
Rao
Y Koteswara
YK
Department of Chemistry, Sri Venkateswara University, 517 502, Tirupati, India.
Harikishore
P
P
Rao
C Venkata
CV
Gunasekar
D
D
Blond
A
A
Bodo
B
B
D035685:Andrographis / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure
D005419:Flavonoids