Chemical constituents of Periploca forrestii and their cytotoxicity activity Chemical constituents of Periploca forrestii and their cytotoxicity activity Optimization of ultrasonic extracting technology of Periploca forrestii by orthogonal test Chemical constituents of Periploca forrestii Glycosides from Periploca forrestii Chemical constituents of Periploca forrestii Studies on content determination of polysaccharides in Periploca forrestii Chemical Constituents of Periploca forrestii Schltr. THE CHEMICAL CONSTITUENTS OF PERIPLOCA FORRESTII Determination of quercetin-3-O-α-L-arabinopyranoside in Periploca forrestii by RP-HPLC