A novel hydrolyzable tannin, chinquapinic acid [3], was isolated from
the MeOH extract of the epidermal powder found on the leaf underside of CbrysokpiS ~anpervimU
inaddition totwoknown tannins,vescalagin11]andcastalagin(2]. Thestrucnveofchinquapinic
acid was established through spectroscopic data and auto-conversion to vescalagin. Scanning
electron microscopy showed the yellowish powder to be crystal-like in appearance. These tannins
are first examples for this class of compounds found as exudates on a plant surface