T. Harayama et al., REVISION OF STRUCTURE OF A NEW COUMARIN ISOLATED FROM ARTEMISIA-CARVIFORIA WALL, Chemical and Pharmaceutical Bulletin, 42(7), 1994, pp. 1550-1552
Four coumarins (1-4) were synthesized by routes shown in Charts 2-5, r
espectively. A proposed structure for a new coumarin isolated from Art
emisia carviforia was incorrect, and the structure of coumarin should
be represented by formula (3).