Diterpenoids from the leaves of Thuja orientalis L. and their inhibitory effects on PTP1B and α-glucosidase.
A phytochemical investigation of the leaves of Thuja orientalis L. resulted in the isolation and identification of 29 diterpenoids, including labdane, pimarane, and abietane derivatives. Among these, the new diterpenoid thujaorienin A (20) were characterized and eight labdane-type diterpenoids (15-16, 21-25 and 28) wer...