7,8-cyclopropataxanes

Details 7,8-cyclopropataxanes 7,8-cyclopropataxanes

1993-03-11

1993-10-19

Reamer, James H.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Having -c-, wherein x is chalcogen, bonded directly to...

549510, 549511, A01N 4302, C07C30500

Patent

active

052545806

ABSTRACT:
An antitumor compound of formula I ##STR1## in which R.sup.1 is --COR.sup.z in which R.sup.z is t-butyloxy, C.sub.1-6 alkyl, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl, C.sub.3-6 cycloalkyl, or phenyl, optionally substituted with one to three same or different C.sub.1-6 alkyl, C.sub.1-6 alkoxy, halogen or --CF.sub.3 groups;

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