A New Diterpene from the Stem Bark of Holarrehena antidysenterica (Linn.) Wall.

A new diterpene (Holarkolavene), isolated from the stem bark of Holarrehena antidysenterica , has been characterised as kola-20(11) cyclo-1(2) – en on the basis of spectroscopic techniques and by chemical means. Key words: Holarrehena antidysenterica , alkaloids, spectroscopic techniques, 3 b dimethylamino-19 b -5, 9 (H) dienine Hamid Nawaz Khan et al. A New Diterpene from the Stem Bark of Holarrehena antidysenterica (Linn.) Wall. J Phytol 2/11 (2010) 50-51