DC-52 derivatives
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United States of America Patent
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Feb 12, 1991
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N/A
app pub date -
Nov 13, 1989
filing date -
Nov 16, 1988
priority date (Note) -
Expired
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Abstract
Disclosed are DC-52 derivatives represented by the formula: ##STR1## wherein each of R.sup.1 and R.sup.2 independently represents hydrogen or hydroxyl, X represents hydroxyl and Y represents cyano and Z represents carboxyl or hydroxymethyl, or pharmacologically acceptable salts thereof. The DC-52 derivatives are useful as antitumor agents.
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