Flavonoids from Andrographis lineata.
Three flavonoids, 5,7,2',3',4'-pentamethoxyflavone (1), 2'-hydroxy-2,4',6'-tri methoxychalcone (2) and dihydroskullcapflavone I (3), together with 17,19,20-trihydroxy-5beta, 8alpha H, 9beta H,10alpha-labd-13-en-16,15-olactone (4), a known diterpenoid and six known flavonoids, 5-hydroxy-7,8-dimethoxyflavanone (5), 5-hydroxy-7,8,2',3',4'-pentamethoxyflavone (6), 5,2'-dihydroxy-7-methoxyflavanone (7), 5,2'-dihydroxy-7,8-dimethoxyflavone (8), 5,2'-dihydroxy-7-methoxyflavone (9) and 5,2'-dihydroxy-7-methoxyflavone 2'-O-beta-D-glucopyranoside (10) were isolated from the whole plant of Andrographis lineata. The structures of these compounds were elucidated on the basis of spectral and chemical studies.
Kishore
P Hari
PH
Natural Products Division, Department of Chemistry, Sri Venkateswara University, Tirupati 517 502, India.
Reddy
M Vijaya Bhaskar
MV
Reddy
M Kesava
MK
Gunasekar
D
D
Caux
Cristelle
C
Bodo
Bernard
B
D035685:Andrographis / Q000737:chemistry*; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D013057:Spectrum Analysis / Q000379:methods
D004224:Diterpenes; D005419:Flavonoids