Title: The tertiary amine nitrogen atom of piperazine sulfonamides as a novel determinant of potent and selective beta3-adrenoceptor agonists.
Journal: ChemMedChem 20091201
Title: Synthesis and phosphodiesterase 5 inhibitory activity of novel pyrido[1,2-e]purin-4(3H)-one derivatives.
Journal: Bioorganic & medicinal chemistry letters 20050602