[1]SyntheticCommunications,2002,vol.32,p.449-455
[2]AustralianJournalofChemistry,1989,vol.42,p.215-221
[3]HelveticaChimicaActa,1949,vol.32,p.2151,2159
[4]RussianJournalofOrganicChemistry,1996,vol.32,p.838-846
[1]Terada;Tanoue;Hatada;Sakamoto[BulletinoftheChemicalSocietyofJapan,1987,vol.60,#1,p.205-213]
[1]Heterocycles,1995,vol.41,p.1139-1168
[1]HelveticaChimicaActa,1949,vol.32,p.2151,2159
[1]CurrentPatentAssignee:PFIZERINC-US4312994,1982,A