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[1]SyntheticCommunications,1997,vol.27,p.1075-1086
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[1]Patent:CN106317027,2017,A.Locationinpatent:Paragraph0246;0247;0248
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[3]Patent:WO2007/7018,2007,A1.Locationinpatent:Page/Pagecolumn38-39
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[6]BioorganicandMedicinalChemistryLetters,2014,vol.24,p.4236-4238