Three new bis-trinorcadalenes from Decaschistia intermedia Craib and their α-glucosidase inhibitory activities

Three new bis-trinorcadalenes, bistrinorcadintermes A–C (1-3) along with seven known compounds, parvifloral D (4), parvifloral E (5), parvifloral C (6), hymexelsin (7), scopoletin (8), scopolin (9), and hibiscolactone A (10) were isolated from the aerial parts and radix of Decaschistia intermedia Craib. Their chemical structures were determined based on spectroscopic methods, including 1D, 2D NMR, MS, and experimental CD spectra. All compounds...