[1]Wystrachetal.[JournaloftheAmericanChemicalSociety,1955,vol.77,p.5915,5917]CurrentPatentAssignee:PFIZERINC-US2520619,1948,A
[2]Bestian[JustusLiebigsAnnalenderChemie,1950,vol.566,p.210,231]
[1]Gauss[ChemischeBerichte,1958,vol.91,p.2216,2222]
[1]Israel;Modest[Journalofmedicinalchemistry,1971,vol.14,#11,p.1042-1047]
[1]Voronkov,M.G.;Knutov,V.I.;Shevko,O.N.[ChemistryofHeterocyclicCompounds,1992,vol.28,#5,p.596-599][KhimiyaGeterotsiklicheskikhSoedinenii,Sbornik,1992,#5,p.704-707]
[1]Murahashi;Yoshimura;Tsumiyama;Kojima[JournaloftheAmericanChemicalSociety,1983,vol.105,#15,p.5002-5011]