Cornusglucosides A and B, Two New Iridoid Glucosides from the Fruit of Cornus officinalis

Abstract Phytochemical study on the fruit of Cornus officinalis S ieb. et Z ucc. yielded two new iridoid glucosides, named cornusglucoside A ( 1 ) and cornusglucoside B ( 2 ). The structures of 1 and 2 were elucidated via comprehensive NMR and HR‐ESI‐MS data analysis. Additionally, their inhibitory effects on IL‐6‐induced STAT3 activation were assessed.