| abstract |
This invention relates to a kind of novel compound, which has multiple biologic activities. It or its salt or metal complex could be used in medicine or animal drug. Said compound is shown as general formula (I). In the formula, R1 represents COOR4, CONR5R6, CO-R7-OR, or CH2OR8; R2 represents hydrogen atom, alkylating group, aromatic alkylating group, hetero aromatic group, hetero aromatic alkylating group, COR13, COOR14, CONR15R16; R3 represents oxygen atom or OR3'; when R3 is oxygen atom, the dash line (...) represents the existence of double-bond, when R3 is OR3', the double-bond does not exist. |