[1]Chemicalandpharmaceuticalbulletin,1983,vol.31,p.1572-1581
[1]BulletinoftheChemicalSocietyofJapan,1982,vol.55,p.845-851
[1]JournalofOrganicChemistry,1986,vol.51,p.3162-3165
[1]Chemicalandpharmaceuticalbulletin,1983,vol.31,p.1572-1581
[1]Chemicalandpharmaceuticalbulletin,1983,vol.31,p.1572-1581