Withanolides from ajuga parviflora
Two new withanolides named ajugin A [14alpha,20, 28-trihydroxy-1-oxo-(20R,22R)-witha-3,5,24-trienolide] (1) and ajugin B [14alpha,20,27-trihydroxy-1-oxo-(20R,22R)-witha-5, 24-dienolide] (2) were isolated from the whole plant of Ajuga parviflora, and their structures were deduced by NMR and MS analyses.
Khan
PM
International Centre for Chemical Sciences, H. E. J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan.
Malik
A
Ahmad
S
Nawaz
HR