Enediyne quinone imines and methods of preparation and use there

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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546 43, 546108, 546 75, 546 14, A61K 3147

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056229585

ABSTRACT:
A quinone imine enediyne possessing cytotoxic activity towards cancer cells having the general structure: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are independently the same or different and are H, Br, Cl, F, NH.sub.2, CO.sub.2 H, or OH or a linear or branched alkyl, etc.; wherein R.sub.4 is H, OH or a linear or branched alkoxy, linear or branched alkoxycarbonyl, etc.; wherein R.sub.5 is H, Br, Cl, F, O.dbd., OH or S--SR, or a linear or branched alkyl, etc.; wherein R.sub.6 is H, Br, Cl, F, CO.sub.2 H, OH or S--SR', or a linear or branched alkyl, etc; wherein R.sub.7 is H, OH or S--SR", or a linear or branched alkyl, linear or branched alkoxycarbonyl, linear or branched alkoxy or linear or branched hydroxyalkyl group; and wherein R, R' and R" are independently the same or different and are a linear or branched alkyl, linear or branched acyl or linear or branched alkoxyalkyl group. Also provided are conjugates of the compound with cleavable peptides and carbohydrates, monoclonal antibodies immunoreactive with cancer cells, compositions comprising the analogues and conjugates, methods of treating tumors and a method of preparing the analogues.

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