Abstract Four stilbenoids isolated from the stems of Vitis wilsonae Veith. were determined as
gnetin A, (+)εvineferin, ampelopsin E and vitisin A. The structure of vitisin A was identified
on the basis of spectroscopic evidence, especially by 2D NMR methods, such as HHCOSY, CHCOSY,
COLOC and NOESY spectra. All the oligostilbenes were isolated from this plant for the first time.