Publicação: Lipoperoxidation and cyclooxygenase enzyme inhibitory piperidine alkaloids from Cassia spectabilis green fruits
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Amer Chemical Soc
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Phytochernical work in the search for bioactive metabolites from the methanolic extract of Senna spectabilis green fruits led to the isolation of a new piperidine alkaloid, (+)-3-O-feruloylcassine (1), in addition to the known (-)-spectaline (2) and (-)-3-O-acetylspectaline (3). The isolates were submitted to in vitro evaluation of lipoperoxidation (LPO) and cyclooxygenase enzymes (COX-1 and -2) inhibitory properties and showed moderate antioxidant activities (40-70%) at 100 ppm when compared to commercial standards BHT and vitamin E and moderate inhibition of COX-1 (ca. 40%) and marginal inhibition of COX-2 enzymes (< 10%) at 100 ppm when compared to nonsteroidal anti-inflammatory drugs (NSAIDs) aspirin, rofecoxib, and celecoxib, respectively.
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Journal of Natural Products. Washington: Amer Chemical Soc, v. 70, n. 12, p. 2026-2028, 2007.
