[Chemical constituents from rhizomes of Acorus tatarinowii].

Fifteen compounds were isolated from the rhizomes of Acorus tatarinowii by means of various chromatographic techniques such as silica gel, ODS, Sephadex LH-20 and preparative HPLC, and their structures were elucidated as tatanone A (1), calamusenone (2), acoronene (3), 2-acetyloxyacoronene (4), acorenone (5), alpha-asarone (6), beta-asarone (7), 1,2-dimethoxy-4-(1'Z-propenyl) benzene (8), methyleugenol (9), asarylaldehyde (10), acoramone (11), gamma-asarone (12), 5-hydroxymethyl-2-furaldehyde (13), galgravin (14) and eudesmin (15) on the basis of spectroscopic data analysis. Compound 1 was a new compound, and compounds 3-5 were separated from Acorus species for the first time.