New Caffeoylquinic Acid Derivatives and Flavanone Glycoside from the Flowers of and Their Bioactivities.

The flower is widely used in China and Japan as a food, beverage, and medicine for many diseases. In our work, two new caffeoylquinic acid derivatives (), a new flavanone glycoside (), and six reported flavanones (⁻) were isolated and identified from the flowers of . The chemical structures of all isolates were elucidated by the analysis of comprehensive spectroscopic data as well as by comparison with previously reported data.