title: Withanolides from ajuga parviflora
abstract: 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.
authors.affiliation: International Centre for Chemical Sciences, H. E. J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan.
authors.initials: PM
authors.lastname: Khan
authors.initials: A
authors.lastname: Malik
authors.initials: S
authors.lastname: Ahmad
authors.initials: HR
authors.lastname: Nawaz