Study on the Chemical Constituents from the Leaves of Desmos chinen sisLour

AIM:To study chemical constituents of lea ves of Desmos chinensis Lour. METHOD: The leaves were extract e d with 95% ethanol. The chemical constituents were isolated by silica gel and S e phadex LH-20 column chromatography. RESULT: Four compounds have b een isolated from the leaves of this plant. The structures were elucidated as a s tilbin(Ⅰ),eucryphin(Ⅱ),mosloflavone(Ⅲ) and negletein (Ⅳ) by spectrometri c methods. CONCLUSION: Compounds Ⅰ and Ⅱ were found from the ge nus Desmos for the first time.