Cyclic antitumor compounds

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

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514280, 514285, 546 41, 546 48, 546 62, A61K 31435, C07D47114

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active

053189760

ABSTRACT:
The present invention relates to certain substituted tetracyclic fused quinoline derivatives of formula (I): ##STR1## wherein: R.sup.1 is hydrogen, hydroxy, fluoro, chloro, bromo, iodo, methoxy or amino;

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