Their structures were established by analysis of
the spectroscopic data. The isolated compounds 1–9 were tested for activities against dipeptidyl
peptidase IV (DPP-IV), compound 7 showed significant antihyperglycemic activities by inhibitory effects
on DPP-IV in human plasma in vitro, with IC50 value of 0.51 lM. Compounds 10–24 were tested in vitro
against NF-jB-luc 293 cell line induced by LPS. Compounds 12, 15, 16, 19, 21, and 23 exhibited moderate
anti-inflammatory activities.