Polyfunctional triterpenoids from the bark of Yeddo spruce

The composition of the polyfunctional triterpenoids of an extract of the Yeddo spruce has been studied. Five serratene triterpenoids have been isolated: 21-hydroxyserrat-14-en-3-one (I), 3-hydroxyserrat-14-en-21-one (II), serratenediol (III), episerratenediol (XII), and diepiserratenediol (V) in the form of its acetate. The structures of the compounds were confirmed by¹³C NMR spectra and XSA.Novosibirsk Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 662–667, November–December, 1992.