LC/MS/NMR analysis of isomeric divanilloylquinic acids from the root barks of Fagara zanthoxyloides Lam. - Ouattara,B.; Angenot,L.; Guissou,P.; Fondu,P.; Dubois,J.; Frédérich,M.; Jansen,O.; Heugen,J-C.; Wauters,J-N.; Tits,M. (Phytochemistry, 2004)