6,7-modified paclitaxels

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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549510, C07D30514, A61K 31335

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active

053807510

ABSTRACT:
The present invention provides paclitaxel derivatives of formula I ##STR1## in which R.sup.1 is --COR.sup.z in which R.sup.Z is RO-- or R;

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