[1]Patent:US5100882,1992,A
[2]Tetrahedron,1991,vol.47,p.5099-5110
[1]Tetrahedron,1991,vol.47,p.5099-5110
[1]JournalofMedicinalChemistry,1994,vol.37,p.4227-4236
[1]JournalofMedicinalChemistry,1994,vol.37,p.4227-4236
[1]JournaloftheAmericanChemicalSociety,1999,vol.121,p.8393-8394
[2]JournalofOrganicChemistry,2004,vol.69,p.891-898