共 5 条
[1]
CHAKRABORTY DP, 1967, TETRAHEDRON LETT, P3471
[2]
DREYER DL, 1968, J ORG CHEM, V33, P3471
[3]
HENRICK CA, 1964, AUST J CHEM, V17, P934
[4]
JOSHI BS, 1969, INDIAN J CHEM, V7
[5]
KARRER W, 1958, KONSTITUTION VORKOMM