The diterpenes of Dacrydium kirkii

Examination of the heartwood of Dacrydium kirkii has shown the presence of isopimaradiene, sclarene, cis-biformene, trans-biformene, manoyl oxide, 14,15-bisnorlabd-8(17)-en-13-one, labda-8(17),13-dien-15-ol, manool, isopimaradienol, β-sitosterol, torulosol, sandaracopimaradiene- 3β,19-diol, and isopimaric acid. Two new diterpene alcohols isolated have been shown to be 7α-hydroxymanool (I) and 2β,3β-dihydroxymanoyl oxide (II).