3-(7-oxo-1-aza-4-oxabicyclo[3.2.0]hept-3-yl)alanine derivative as antitumor agent
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United States of America Patent
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Jul 29, 1997
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N/A
app pub date -
Oct 6, 1995
filing date -
Jan 7, 1994
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Expired
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Abstract
The present invention relates to the use of 3-(7-oxo-1-aza-4-oxabicyclo[3.2.0]hept-3-yl)alanine derivatives of formula (I) or a pharmaceutically acceptable salt thereof, as antitumor agents. ##STR1## Wherein R is: hydrogen or COOR.sub.2 wherein R.sub.2 is C.sub.1 -C.sub.3 alkyl group which may be substituted with aryl group. Wherein R.sub.1 is: hydrogen or C.sub.1 -C.sub.3 alkyl group which may be substituted with one or two aryl groups.
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