Isocartormin, a novel quinochalcone C-glycoside from Carthamus tinctorius

Isocartormin, a new semi-quinonechalcone C-glycoside, along with two known analogs, cartormin and safflomin C, were separated from the water extract of Carthamus tinctorius L. Isocartormin was identified as a diastereoisomer of cartormin with a reverse configuration at C-18 through detailed analysis of its spectroscopic and mass data.281