Title
Eudesmane-type sesquiterpenoids from Salvia plebeia inhibit IL-6-induced STAT3 activation
Author
Hyun-Jae Jang, Hyun-Mee Oh, Joo Tae Hwang, Mi-Hwa Kim, Soyoung Lee, Kyungsook Jung, Young-Ho Kim, Seung Woong Lee, Mun-Chual Rho
Year
2016
Journal
Phytochemistry
Abstract
Seven eudesmane-type sesquiterpenoid lactones and the known plebeiolide C were isolated from an ethanol-soluble extract of the aerial parts of Salvia plebeia R. Br. Their structures were determined via NMR and MS, and their absolute configurations were elucidated using ECD, and X-ray crystallographic analysis, as well as the modified Mosher ester method. All isolates were evaluated for their inhibitory effects on IL6-induced STAT3 promoter activation in stably transfected Hep3B cells. Of these isolates, eudebeiolide D exhibited an inhibitory effect with the IC50 value of 1.1 μM.
Instrument
J-710
Keywords
Circular dichroism, Absolute configuration, Natural products