ISOLATION AND STRUCTURE OF CAMALDULENSIDE FROM EUCALYPTUS CAMALDULENSIS VAR. PENDULA BLAK. ET JACOBS

AIM　To study the chemical composition of the leaves of Eucalyptus camaldulensis var. pendula Blak. et Jacobs. METHODS　Column chromatography was used to separate the chemical constituents. IR, MS, ¹HNMR, ¹³CNMR, ¹H-¹H　COSY, ¹³C-¹H　COSY and X-ray diffraction were used to determine the structures of the isolated constituents. RESULTS　Five compounds were identified by spectral analyses as 1-triacotanol(I),　β-sitosterol(II), 4-hydroxybenzoic acid(III), β-sitosterol-3-O-β-D-glucopyranoside(IV) and camaldulenside(V). CONCLUSION　All compounds were obtained from Eucalyptus camaldulensis var. pendula Blak. et Jacobs for the first time. Among them, compound V is a new one.