Nature is a unique source of structures of high phytochemical diversity, many of them possessing interesting biological activities and medicinal properties. In the context of the worldwide spread of different diseases such as AIDS, chronic diseases and a variety of cancers, an intensive search for new lead compounds for the development of novel pharmacological therapeutics is extremely important. Medicinal plants would be the best source to obtain a variety of drugs and, therefore, such plants should be investigated to understand better about their properties. Based on this rational, the...