The genus Dasymaschalon(Annonaceae) comprising about 16 species are widely distributed in temperate and subtropical regions.D.trichophorum is one of the three D
A minor lignin,4-demethyldeoxypodophyllotoxin,was isolated from Sinopodophyllum emodi.First,a crude extract of Sinopodophyllum emodi was analyzed by HPLC-MS