共 12 条
[2]
BROOKES D, 1965, J CHEM SOC, P5385
[3]
ELLIS JJ, 1964, NATURE, V203, P1982
[7]
OHURI H, 1975, TETRAHEDRON LETT, V16, P3657
[8]
PARKER WL, 1973, J ORG CHEM, V34, P2489
[9]
SHARMA JC, 1986, HETEROCYCLES, V24, P441