[1]Chemicalandpharmaceuticalbulletin,1962,vol.10,p.1087-1093
[1]Chemicalandpharmaceuticalbulletin,1962,vol.10,p.1087-1093
[1]JournalofMedicinalChemistry,1992,vol.35,p.3270-3279
[1]ActachemicaScandinavica.SeriesB:Organicchemistryandbiochemistry,1988,vol.42,p.55-58
[1]OrganicLetters,2007,vol.9,p.1717-1720