[1]McGreer,D.E.;Chiu,N.W.K.[CanadianJournalofChemistry,1968,vol.46,p.2225-2232]
[2]Piers,E.;Phillips-Johnson,W.M.[CanadianJournalofChemistry,1975,vol.53,p.1281-1290]
[3]Lipshutz;Kotsuki;Lew[TetrahedronLetters,1986,vol.27,#40,p.4825-4828]
[4]Bauer,JohannesMoritz;Frey,Wolfgang;Peters,Rene[AngewandteChemie-InternationalEdition,2014,vol.53,#29,p.7634-7638][Angew.Chem.,2014,vol.126,#29,p.7764-7768,5]
[1]Meth-Cohn,Otto;Moore,Clive;Taljaard,HeinrichC.[JournaloftheChemicalSociety.PerkintransactionsI,1988,#9,p.2663-2674]
[1]Nomura;Kanemasa[TetrahedronLetters,1994,vol.35,#1,p.143-146]
[1]Tatsukawa,Akira;Dan,Masashi;Ohbatake,Mika;Kawatake,Keiko;Fukata,Tomohiro;etal.[JournalofOrganicChemistry,1993,vol.58,#16,p.4221-4227]
[1]Barrett,AnthonyG.M.;Tam,William[JournalofOrganicChemistry,1997,vol.62,#14,p.4653-4664]
[2]Lipshutz;Kotsuki;Lew[TetrahedronLetters,1986,vol.27,#40,p.4825-4828]
[3]Gorthey,LeeAnn;Vairamani,Mariappanadar;Djerassi,Carl[JournalofOrganicChemistry,1984,vol.49,#9,p.1511-1517]
[4]Mulzer,Johann;Lammer,Ortrud[ChemischeBerichte,1986,vol.119,#7,p.2178-2190]
[5]Bauer,JohannesMoritz;Frey,Wolfgang;Peters,Rene[AngewandteChemie-InternationalEdition,2014,vol.53,#29,p.7634-7638][Angew.Chem.,2014,vol.126,#29,p.7764-7768,5]
[6]CurrentPatentAssignee:JAPANTOBACCOINC-US2016/194290,2016,A1Locationinpatent:Paragraph0703-0705