title: New diterpenes from Jatropha divaricata.
abstract: Extracts of the stems of Jatropha divaricata have yielded the two new diterpenes ent-3 beta,14 alpha-hydroxypimara-7,9(11),15-triene-12-one (3) and the rearranged pimarane ent-15(13-->8)abeo-8 beta(ethyl)pimarane (4), which appears to be a new skeletal type. The rare cleistanthane diterpenes spruceanol (1) and cleistanthol (2) were also obtained.
authors: Department of Chemistry, University of the West Indies, Mona, Kingston 7, Jamaica.
authors: R W
authors: RW
authors: Denton
authors: W W
authors: WW
authors: Harding
authors: C I
authors: CI
authors: Anderson
authors: H
authors: H
authors: Jacobs
authors: S
authors: S
authors: McLean
authors: W F
authors: WF
authors: Reynolds
mesh_terms: D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification; D019665:Euphorbiaceae / Q000737:chemistry*; D007563:Jamaica; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D010946:Plants, Medicinal / Q000737:chemistry*
chemical_list: D004224:Diterpenes; C433627:ent-3 ,14 -hydroxypimara-7,9(11),15-triene-12-one