[1]ChemicalandPharmaceuticalBulletin,2002,vol.50,p.941-959
[1]ChemicalandPharmaceuticalBulletin,1998,vol.46,p.42-52
[1]Patent:US4835172,1989,A
24190-77-0
4093-31-6
89481-87-8
59-06-3
202822-76-2
4235-43-2