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[1]JournaloftheAmericanChemicalSociety,1954,vol.76,p.6078
[1]JournalofOrganicChemistry,1948,vol.13,p.134,138
[1]BioorganicandMedicinalChemistryLetters,1999,vol.9,p.3147-3152
[1]BioorganicandMedicinalChemistryLetters,1999,vol.9,p.3147-3152