A new quinic acid derivative with α-glucosidase inhibitory activity from the fruit of Gardenia jasminoides J.Ellis.

A new quinic acid derivative (1) along with seven known compounds (2-8) were isolated from the fruit of Gardenia jasminoides J.Ellis. All the structures of the isolated compounds were elucidated on the basis of the analysis of multiple spectroscopic data. The α-glucosidase inhibitory effects of the isolated compounds were investigated. The results showed that compounds 1-3, 6, and 8 have moderate α-glucosidase inhibitory activities.