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[1]JournalofMedicinalChemistry,1991,vol.34,#3,p.956-968
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[1]JournalofMedicinalChemistry,1991,vol.34,#3,p.956-968
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[2]JournaloftheAmericanChemicalSociety,1993,vol.115,p.6646-6651
[3]TetrahedronLetters,2003,vol.44,p.5251-5253
[4]Patent:WO2004/50084,2004,A2.Locationinpatent:Page/Pagecolumn57;59
[1]JustusLiebigsAnnalenderChemie,1961,vol.646,p.127-133
[1]ChemistryLetters,1974,p.631-634