OBJECTIVETo study the constituents of the stems of Periploca forrestii.

METHODThe compounds were separated and purified by silica gel column chromatography, recrystallization and high-performance liquid chromatography. The structures were identified by various spectroscopic methods.

RESULTNine compounds were isolated and identified as 3-O-acetyloleanolic acid (1), 14-ursen-3-ol-1-one (2), taraxasterol (3), jacoumaric acid (4), periplogenin (5), 2alpha,3beta-dihydroxyursolic acid (6), E-p-hydroxy-cinnamic acid (7), caffeic acid (8), proanthocyanidin A2 (9).

CONCLUSIONAll compounds except 6 were isolated from this plant for the first time, compound 4, 9 were obtained from the Periploca for the first time.

Caffeic Acids ; chemistry ; Chromatography, High Pressure Liquid ; Digitoxigenin ; analogs & derivatives ; chemistry ; Magnetic Resonance Spectroscopy ; Periploca ; chemistry ; Proanthocyanidins ; chemistry ; Sterols ; chemistry ; Triterpenes ; chemistry