Pseudoguaianolides from the flowers of Parthenium hysterophorus.
Chemical investigation on the flowers of Parthenium hysterophorus has resulted in the isolation of four new pseudoguaianolides, hysterones A-D along with the known compounds, parthenin, coronopilin, 2beta-hydroxycoronopilin and tetraneurin-A. The structures of the new compounds were established by interpretation of their spectral (1D and 2D NMR) data. The X-ray crystallographic analysis of hysterones A and C was also carried out.
Ramesh
C
C
Indian Institute of Chemical Technology, Hyderabad 500 007, India.
Ravindranath
N
N
Das
Biswanath
B
Prabhakar
A
A
Bharatam
Jagadeesh
J
Ravikumar
K
K
Kashinatham
A
A
McMorris
T C
TC
D019659:Asteraceae / Q000737:chemistry*; D018360:Crystallography, X-Ray; D035264:Flowers / Q000737:chemistry; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D012717:Sesquiterpenes / Q000737:chemistry* / Q000302:isolation & purification*
D012717:Sesquiterpenes