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Two new epimeric pairs of iridoid scyphiphin A_1(1a),A_2(1b) and scyphiphin B_1(2a),B_2(2b) were isolated from Scyphiphora hydrophyllacea Gaertn.F.Their structures were elucidated by spectroscopic methods.The mixture of scyphiphin B_1 and scyphiphin B_2 showed moderate cytotoxicity against human hepatoma SMMC-7721 cell line in vitro by MTT method.
Two new epimeric pairs of iridoid scyphiphin A_1(1a), A_2(1b) and scyphiphin B_1(2a), B_2(2b) were isolated from Scyphiphora hydrophyllacea Gaertn.F.Their structures were elucidated by spectroscopic methods.The mixture of scyphiphin B_1 and Scyphiphin B_2 showed moderate cytotoxicity against human hepatoma SMMC-7721 cell line in vitro by MTT method.