发明名称 |
METHOD FOR THE PREPARATION OF 9-AMINO CAMPTOTHECIN |
摘要 |
9-Amino camptothecin of formula (I) is prepared by: 1) reducing a compound of formula (II), wherein Hal is 10- or 12-halogen, in a single step to the 9-amino-camptothecin of formula (I) or, alternatively, 2a) reductively removing the Hal group from a compound of formula (II) so obtaining the compound of formula (III), and 2b) reducing the compound of formula (III) so obtaining the 9-amino camptothecin of formula (I); the said steps 1) and 2a) and, optionally, step 2b) each being carried out in the presence of a catalytic amount of a compound of formula PdL2 wherein L is acetate or halogen and, additionally, in the presence of an ammonium formate as a hydrogen source. The 9-amino camptothecin of formula (I) is useful as inhibitor of the enzyme topoisomerase I. It is useful in the treatment of cancers, in particular leukaemia, colon and rectal tumours.
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申请公布号 |
WO9532207(A1) |
申请公布日期 |
1995.11.30 |
申请号 |
WO1995EP01692 |
申请日期 |
1995.05.04 |
申请人 |
PHARMACIA S.P.A.;BEDESCHI, ANGELO;CABRI, WALTER;CANDIANI, ILARIA;ZARINI, FRANCO |
发明人 |
BEDESCHI, ANGELO;CABRI, WALTER;CANDIANI, ILARIA;ZARINI, FRANCO |
分类号 |
C07D491/22;(IPC1-7):C07D491/22 |
主分类号 |
C07D491/22 |
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