[1]ChemistryofHeterocyclicCompounds,1971,vol.7,p.62-64 KhimiyaGeterotsiklicheskikhSoedinenii,1971,p.65-67
[1]ArchivderPharmazieundBerichtederDeutschenPharmazeutischenGesellschaft,1967,vol.300,p.829-839
[1]IndianJournalofChemistry-SectionBOrganicandMedicinalChemistry,1985,vol.24,p.71-77
[1]Synthesis,1987,p.806-809
[1]Komagawa,Hiromi;Maejima,Yukako;Nagano,Takashi[Synlett,2016,vol.27,#5,p.789-793]
[2]Singh,Kamaljeet;Fennell,ChristopherJ.;Coutsias,EvangelosA.;Latifi,Reza;Hartson,Steve;Weaver,JimmieD.[Chem,2018,vol.4,#1,p.124-137]
[3]CurrentPatentAssignee:SANOFI-US5194442,1993,A