Alkaloids are a subgroup of natural nitrogenous compounds. The term “alkaloid” have many definitions because, it refers to compounds with very heterogeneous structures, however, alkaloid is a basic substance containing one ...

The evolution of cactophily in the genus Drosophila was a major cological transition involving over a hundred species in the Americas that acquired the capacity to cope with a variety of toxic metabolites evolved as feeding ...

In this work, the influence of common >N-CH3 group present in the three free base, cationic and hydrochloride/bromide structures of scopolamine, heroin, morphine, cocaine and tropane alkaloids in gas and aqueous solution ...