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US5663298A UCK14 compounds 失效
UCK14化合物

UCK14 compounds
摘要:
The present invention relates to UCK14 compounds having antitumor activity which are represented by the formula: ##STR1## wherein R.sup.1 is hydrogen or --COOC(CH.sub.3).sub.3 ; and R.sup.2 and R.sup.3 are taken together to form --CH.sub.2 --, or each R.sup.2 and R.sup.3 independently are hydrogen,and pharmaceutically acceptable salts thereof.
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