| 摘要 |
Compounds which are benzoheterocyclic distamycin derivatives of formula (I), wherein n is 2, 3 or 4; A is a heteroatom selected from O and S or is a group NR, wherein R is hydrogen or C1-C4 alkyl; B is CH or N; R1 is hydrogen or C1-C4 alkyl; G is selected from the group consisting of (a, b, c, d, e, f, g, h, i, j), and -C=N; wherein R5, R6, R7, R8, R9, R10, R11 and R12 are, independently from each other, hydrogen or C1-C4 alkyl; T is a group of formula (II) or (III) as defined above, wherein p is 0 or 1; R2 and R3 are, independently from each other, hydrogen, C1-C4 alkyl optionally substituted by one or more fluorine atoms, or C1-C4 alkoxy; R4 is C1-C4 alkyl or C1-C3 haloalkyl; X1 and X2 are halogen atoms or pharmaceutically acceptable salts thereof; provided that at least one of R5, R6 and R7 is alkyl; are useful as antitumor agents.
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