Enzymatic inhibitory activity and Trypanocidal effects of extracts and compounds from Siphoneugena densiflora O. Berg and Vitex polygama Cham. - Gallo, Margareth B. C.; Marques, Anna Sylvia F.; Vieira, Paulo C.; Silva, Maria Fátima das Graças Fernandes da; Fernandes, João B.; Silva, Márcio; Guido, Rafael Victorio Carvalho; Oliva, Glaucius; Thiemann, Otávio Henrique; Albuquerque, Sérgio de; Fairlamb, Alan H. (Zeitschrift fur Naturforschung C, 2008)