共 58 条
[6]
APPROACHES TO SYNTHESIS OF TRITERPENOIDS .2. SOME TETRACYCLIC PRECURSORS SUITABLE FOR CONVERSION INTO PENTACYCLIC TRITERPENOIDS
[J].
CANADIAN JOURNAL OF CHEMISTRY,
1972, 50 (12)
:1944-&
[9]
CAINE D, 1976, ORG REACTIONS, V23, P1