Determination of the Absolute Configuration of Khellactone Esters from <i>Peucedanum japonicum</i> Roots
作者:Min Jee Hong、Jinwoong Kim
DOI:10.1021/acs.jnatprod.6b00947
日期:2017.5.26
angular dihydropyranocoumarins (1–16) and 24 known compounds were isolated from the roots of Peucedanum japonicum Thunb. The absoluteconfiguration of diacylkhellactone was established by partial hydrolysis, the Mosher method, and X-ray crystallography. In addition, ECD spectroscopy was used to assign the absoluteconfigurations of several of the angular dihydropyranocoumarins. Enantiomers were detected
Two new angular-type dihydropyranocoumarins, peujaponisinol A and B, were isolated from the roots of Peucedanum japonicum and the structures determined as 3'(S)-senecioyloxy-4'(S)-hydroxy-3',4'-dihydroseselin and 3'(S)-hydroxy-4'(S)-senecioyloxy-3',4'-dihydroseselin, respectively, by spectroscopic and chemical methods.