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The Copey tree (Clusia rosea) has a large distribution in Cuba and its floral resin is a rich source of polyisoprenylated benzophenones. To determine the presence of these natural products, we carried out a study by HPLC of 21 propolis samples produced by honey bees (Apis mellifera) from different provinces of Cuba. Nemorosone resulted to be the most(More)
The oleanane-type triterpene chichipegenin and the sterols peniocerol and macdougallin, isolated from Myrtillocactus geometrizans, showed anti-inflammatory activities in both the 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced mouse ear edema model and the carrageenan-induced rat paw edema model. All tested compounds inhibited the TPA-induced edema in a(More)
The synthesis of monomeric pentacoordinated diorganotin complexes derived from pyridoxamine dihydrochloride and substituted salicylaldehydes is described. The complexes were characterized using UV/Vis, IR, MS, as well as 1H, 13C, and 119Sn NMR techniques; the molecular structure of the 1e complex was established by X-ray diffraction, which showed a(More)
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