Four new platinum compounds containing different pyrrolidines as ligan
ds are reported. In vitro tests show damage to bacterial DNA and parti
cipation of RecA protein in the repair system. In vitro tests using le
ukemia L1210 cells show growth inhibition by the new compounds within
the range of cisplatin and carboplatin. in vivo tests using leukemia L
1210 cells on male BDF1 show that these compounds are significantly ac
tive.