Ning Zhao, Jin-Song Guo, Lee-Chiang Lo, Nina Berova, Koji Nakanishi, Garner T. Haupert, M. Warrack and Adrienne A. Tymiak
A strategy for performing submicrogram-scale structural studies of saponins and related compounds is worked out by: (i) naphthoylation to sensitize HPLC detection by fluorescence as well as configurational studies by exciton coupled CD; and (ii) ω-cyanoundecanoylation to increase LC/MS sensitivity (ca. 100-fold).