共 10 条
[4]
HUTCHINS RO, 1969, TETRAHEDRON LETT, P3495
[5]
NEILSON T, 1962, J CHEM SOC, P371
[6]
OTANI G, 1968, CHEM PHARM BULL, V16, P1840
[10]
SWANWICK MG, 1970, CHEM COMMUN, P63