Study on Chemical Constituents of Cyclocarya paliurus
Phytochemical investigation of chemical constituents of the CHCl3 fraction of 75% alcohol extract from the leaves of Cyclocarya paliurus has resulted in the isolation of five compounds, α-boswellic (Ⅰ) , β-boswellic (Ⅱ) , Oleanolic acid (Ⅲ) , 4-hy-droxyl-3-methoxyl-benzoic acid (Ⅳ) and 3 ,6,3',5'-tetramenthox-5,7,4'-trihydroxy-flavonol (Ⅴ). Their structures were elucidated on the basis of spectroscopic analyses, especially NMR. Compunds Ⅰ,Ⅱ,Ⅳ and Ⅴ were obtained from this plant for the first time.