1,4-bis(alkylamino)-2,3-diaza-anthracene-9,10-diones
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United States of America Patent
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Nov 10, 1992
Grant Date -
N/A
app pub date -
Oct 25, 1990
filing date -
Oct 27, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Compounds of formula I are described, ##STR1## wherein: R.sub.1 and R.sub.2, that can be the same or different, are hydrogen or acyl groups; R.sub.3 and R.sub.4, that can be the same or different, are hydrogen or optionally substituted alkyl groups. The compounds of formula I are prepared by oxydation of the compounds of formula II: ##STR2## wherein the groups R'.sub.1, R'.sub.2, R'.sub.3 and R'.sub.4 have the same meanings as R.sub.1, R.sub.2, R.sub.3 and R.sub.4 or groups convertible to the latter. The compounds of formula I have remarkable antitumor activity.
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