共 19 条
[6]
COOK PD, 1986, J HETEROCYCLIC CHEM, V23, P155
[8]
DENNIN F, UNPUB MAGN RESON CHE
[9]
DINH TH, 1975, J HETEROCYCLIC CHEM, V12, P111
[10]
DINH TH, 1976, J ORG CHEM, V41, P3124