[1]Tetrahedron,1993,vol.49,p.8139-8146
[1]JournalofOrganicChemistry,1998,vol.63,p.2731-2737
[1]BioorganicandMedicinalChemistry,1999,vol.7,p.921-932
1234616-15-9
130473-27-7
147071-00-9
24334-19-8
872355-63-0
76808-18-9