Two new rare-class tetracyclic diterpenoids from Otostegia limbata.
Two new tetracyclic diterpenoids trivially named as limbatenolide D (1) and limbatenolide E (2) have been isolated from Otostegia limbata. The structure elucidation of the compounds was based primarily on two-dimensional (2D) NMR techniques and on comparison with the literature data.
Farooq
Umar
U
International Center for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, Karachi, Pakistan.
Khan
Afsar
A
Ahmad
Viqar Uddin
VU
Khan
Saleha Suleman
SS
Kousar
Farzana
F
Arshad
Saima
S
D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification; D019686:Lamiaceae / Q000737:chemistry*; D015394:Molecular Structure
D004224:Diterpenes; C520696:limbatenolide D; C520697:limbatenolide E