Studies on Medicinal Resources. XXXVIII. Studies on Constituents of Polygonatum Plants (Liliaceae). (1). The Constituents in the Leaves of Polygonatum odoratum (MILL.) DRUCE var. Pluriflorum (MIG.) OHWI

Polygonatiin (IV), C33H40 5H2O, mp 215-217°, a new C-glucosylflavone, was isolated from the leaves of Polygonatum odoratum (MILL.) DRUCE var. pluriflorum (MIQ.) OHWI (Liliaceae) together with oosmosiin (I), vitexin (II), vitexin 2"-O-glucoside (III), and saponarin (V). The structure of polygonatiin was determined as vitexin 2"-O-sophoroside by chemical degradation and spectral measurements.