Homoisoflavanones and stilbenes from fresh bulb of Scilla scilloides Advances on chemical constituents and pharmacological activity of genus Scilla Study on chemical constituents of Picrasma quassioides Homoisoflavanones of Polygonatum odoratum Rhizome from Qinling Mountain Chemical constituents from Solanum nienkui (I) A new compound of isoflavanones from fruits of Psoralea corylifolia and its cytotoxicity Chemical constituents from Solanum nienkui (I) Chemical constituents of isoflavonoids from Dalbergia cochinchinensis