Glycosyl flavonoids from Herissantia tiubae (K. Schum) Brizicky (Malvaceae) and preliminary tests of kaempferol 3, 7-di-O-a-L-rhamnopyranoside - Silva, D A; Costa, D A; Silva, D; Souza, M FV; Agra, M F; Medeiros, I A; Barbosa-Filho, J M; Braz-Filho, R (Rev Bras Farmacogn, 2005)