A Study on Chemical Compositions of Calocedrus Macrolepis

Objective To study the chemical compositions of Calocedrus macrolepis.Methods The chemical compositions were isolated with silica gel column chromatography,semi-preparative HPLC,Sephadex LH-20 and MPLC packed with MCI gel and their structures were elucidated on the basis of physical characteristics and spectral data.Results Five compounds were obtained,and their structures were identified as caryolane-1,9β-diol(1),eudesma-4(15)-ene-lβ,6α-diol(2),5-epi-eudesma-4(15)-ene-1β,6β-diol(3),eudesma-11(13)-ene-4β,9β-diol(4),coniferaldehyde(5).Conclusion All of these compounds are isolated from the Calocedrus macrolepis for the first time.