3Terrett NK,Bell AS,Brown D,et al.Sildenafil(VIAGRATM),a potent and selective inhibitor of type 5 cGMP phosphodiesterase with utility for the treatment of male erectile dysfunction[J].Bioorg Med Chem Lett,1996,6(15):1819-1824. 被引量：1
7Kankan RNR,Rao DR.A novel process for the synthesis of sildenafil citrate:WO,0119827[P].2001-03-22.(CA2001,134:237494). 被引量：1
8Achmatowicz O,Balicki R,Chmielowiec U,et al.Method of preparation of sildenafil:WO,2001022918[P].2001-04-05.(CA 2001,134:280859). 被引量：1
9Chaudhari DT,Deshpande PB,Khan RAR.An improved process for preparing a therapeutically active pyrazolopyrimidinone derivative:EP,1002798[P].2000-05-24.(CA 2000,132:347588). 被引量：1
