[1]ZhurnalObshcheiKhimii,1947,vol.17,p.1816,1824 Chem.Abstr.,1948,p.4169
[1]JournaloftheAmericanChemicalSociety,1948,vol.70,p.500
[1]ChemischeBerichte,1977,vol.110,p.2922-2938
[2]BioorganicandMedicinalChemistryLetters,2002,vol.12,p.319-323
[1]ChemistryLetters,1982,p.1559-1560
[1]JournalofMedicinalChemistry,1985,vol.28,p.1864-1869