[1]Chemistry-AEuropeanJournal,2011,vol.17,#27,p.7414-7417
[2]JournaloftheChemicalSociety,1953,p.3733,3736,3737
[3]TetrahedronLetters,1993,vol.34,#2,p.331-334
[4]Patent:EP2390243,2011,A1,.Locationinpatent:Page/Pagecolumn26
[1]JournalofHeterocyclicChemistry,1992,vol.29,#6,p.1663-1665
[2]JournalofOrganicChemistry,2003,vol.68,#3,p.718-725
[3]Patent:WO2012/75917,2012,A1,.Locationinpatent:Page/Pagecolumn36
[1]Patent:US2002/19531,2002,A1,
[2]JournalofMedicinalChemistry,2002,vol.45,#14,p.3041-3047
[3]TetrahedronLetters,1993,vol.34,#2,p.331-334
[4]Patent:EP2390243,2011,A1,
[5]Patent:WO2012/75917,2012,A1,
[1]Patent:US4789745,1988,A,
[1]EuropeanJournalofOrganicChemistry,2015,vol.2015,#32,p.7009-7019
[1]ChemicalandPharmaceuticalBulletin,1982,vol.30,p.3580-3600
[1]TetrahedronLetters,1993,vol.34,p.8329-8332
[1]JournalofMedicinalChemistry,1990,vol.33,p.646-652
[1]TetrahedronLetters,1994,vol.35,p.1847-1850
[1]TetrahedronLetters,1994,vol.35,p.1847-1850