Hongsu Zhao

Homoisoflavanones, Alkaloid, and Norsesquiterpenoid from Polygonatum cyrtonema and Their Immunomodulatory Effects

Abstract Polygonatum cyrtonema (Huang jing) is widely used in both the food and traditional Chinese medicine industries. A chemical investigation of the rhizome of cultivated P. cyrtonema yielded six previously undescribed compounds─one norsesquiterpenoid (1), one pyridine alkalo...