[Chemical Constituents from Periploca forrestii].

To study the chemical constituents from Periploca forrestii.The constituents were separated by column chromatography and their structures were elucidated by spectroscopic methods.Seven compounds were isolated from Periploca forrestii and identified as wogonin( 1),negletein( 2),vanilline( 3),isovanilline( 4),periplocoside L( 5),β-sitosterol( 6) and β-daucosterol( 7).Compounds 1 and 2 are obtained from this genus for the first time,and compounds 3...