Objective:To study the chemical constituents of roots of Artocarpus nanchuanensis. Method: The constituents were isolated from the ethyl acetate portion of 95% ethanol extraction of A. nanchuanensis roots by column chromatography over silica gel

Diaion HP20 macroreticular resin

MCI CHP 20P gel

Sephadex LH-20 gel

ODS gel

etc. Their structures were elucidated by analysis of physical chemical properties and spectral data. Result: Nine compounds were isolated and their structures were identified as p-hydroxybenzaldehyde(1)

2

4-dihydroxybenzoic acid(2)

p-coumaric acid(3)

(+) catechin(4)

(E)-ferulic acid methyl ester(5)

p-E-hedroxycinnamic acid methyl ester(6)

norartocarpetin(7)

trans-oxyresveratrol(8)

moracin M(9). Conclusion: Compounds 1

2

5 and 6 were isolated from Moraceae for the first time. Compound 3 was firstly reported the occurrence in the genus Artocarpus

and compounds 7-9 were characterized in A. nanchuanensis for the first time.