[1]ChemicalandPharmaceuticalBulletin,1990,vol.38,p.2446-2458
[1]Ashimori;Ono;Uchida;Ohtaki;Fukaya;Watanabe;Yokoyama[ChemicalandPharmaceuticalBulletin,1990,vol.38,#9,p.2446-2458]
[1]JournalofHeterocyclicChemistry,1993,vol.30,p.473-476
[1]Fos;Bosca;Mauleon;Carganico[JournalofHeterocyclicChemistry,1993,vol.30,#2,p.473-476]
[1]Ashimori;Ono;Uchida;Ohtaki;Fukaya;Watanabe;Yokoyama[ChemicalandPharmaceuticalBulletin,1990,vol.38,#9,p.2446-2458]