Indole monoterpene alkaloids from Chimarrhis turbinata DC Prodr: a contribution to the chemotaxonomic studies of the Rubiaceae family - Cardoso, Carmen Lúcia; Silva, Dulce Helena S.; Young, Maria Cláudia M.; Castro-Gamboa, Ian; Bolzani, Vanderlan da Silva (Revista Brasileira de Farmacognosia, 2008)