Ivone Antônia de Souza

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Two series of 5 and 6-substituted 1,3-benzodioxole peptidyl derivatives were synthesized and evaluated as antitumour and antimicrobial agents. The compounds that could be conveniently prepared in a few steps processes from natural safrole have been characterised by IR and 1H-NMR spectroscopy. In vivo antitumor activity tests showed that some of the(More)
Indigofera suffruticosa Mill (Fabeceae) occurs in the Northeast countryside and has intensive popular use in the treatment of infectious, inflammatory and other processes. The main aim of the present work was to investigate the cytotoxic and antitumor effects of aqueous extracts of leaves of I. suffruticosa obtained by infusion and maceration as well as to(More)
Euphorbia tirucalli (Euphorbiaceae family), an environmental risk factor for Burkitt's lymphoma, also presents pharmacological activities. In the northeast region of Brazil its latex is used as an antimicrobial, antiparasitic in the treatment of coughs, rheumatism, cancer and other maladies as folk remedy. The present work concerns its developmental(More)
A new composite was synthesized by the hydrothermal method using a 3D coordination network [Ln2(C4H4O4)3(H2O)2]·H2O (Ln = Eu and Tb) and activated carbon. The coordination network is formed within the pores of the charcoal, allowing for the use of this material as a detoxifying agent.
In the scope of a research program aiming to perform the synthesis and pharmacological evaluation of novel possible antitumour prototype compounds, we report in this paper the synthesis of new peptidyl derivatives from 4-thiazolidone nucleus. The synthesis reactions have been performed based in peptide synthesis as strategies. The characterisation of this(More)
Natural products contain important combinations of ingredients, which may to some extent help to modulate the effects produced by oxidation substrates in biological systems. It is known that substances capable of modulating the action of these oxidants on tissue may be important allies in the control of neovascularization in pathological processes. The aim(More)
Cancer is a serious worldwide health threat, killing almost seven million people per year. Quinones are an important class of antitumour agents that are activated by tumour hypoxia. Primin (2-methoxy-6-n-pentyl-1,4-benzo-quinone), a naturally-occurring product obtained from Primula obconica (Primulaceae) has shown antimicrobial and antitumour properties.(More)
This work evaluated an ethanolic extract from Morus alba leaves for toxicity to Artemia salina, oral toxicity to mice, and antimicrobial activity. Phytochemical analysis revealed the presence of coumarins, flavonoids, tannins, and triterpenes in the extract, which did not show toxicity to A. salina nauplii. No mortality and behavioral alterations were(More)
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