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Synthesis and phosphodiesterase inhibitory activity of new sildenafil analogues containing a carboxylic acid group in the 5′-sulfonamide moiety of a phenyl ring

Medicinal ChemistryPharmaceutical SciencePhenyl RingDerivative (Chemistry)BiochemistryNew Sildenafil AnaloguesNatural SciencesMedicinePhosphodiesterase Inhibitory ActivityChemical BiologyPharmacologyPharmaceutical ChemistrySynthetic ChemistryDrug Discovery