Author(s): Grassi, Rafaela Ferreira ; Resende, Ubirazilda Maria ; Silva, Walciane da ; Macedo, Maria Lígia Rodrigues ; Butera, Ana Paola ; Tulli, Elayne de Oliveira ; Saffran, Francis Paes ; Siqueira, João Máximo de
Date: 2012
Origin: Oasisbr
Subject(s): Bignoniaceae; Plantas; Estruturas Vegetais - química; Plants; Plant Structures - chemistry
ABSTRACT - Memora peregrina (local name: 'ciganinha' – Bignoniaceae) is a weed that often invades pastures in the Brazilian state of Mato Grosso do Sul. From its leaves and subterranean parts, the following compounds were isolated: allantoin (20.7 w/w in subterranean parts), the iridoid 6b-hydroxyipolamiide, hyperin, 3'-O-methylhyperin, 4-hydroxy-N-methylproline, b-sitosterol, a-amirin and b-amirin, and lupeol. Allantoin exhibited an activity of inducing germination in seeds of Lactuca sativa used as a biological model, and the iridoid showed moderate activity in the larval development of Anagasta kuehniella. These results, associated with this plant's behavior, are suggestive of the occurrence of adaptive and competitive strategies in relation to other plant species.
