(Oxo-4-4H-(1)-benzopyran-8-yl) alkanoic acids, salts and derivatives, their manufacture and medicines containing them
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United States of America Patent
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Jul 22, 1986
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Nov 6, 1984
filing date -
Nov 25, 1981
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Abstract
The invention concerns: (oxo-4-4H-(1)-benzopyran-8-yl) alkanoic acids and their derivatives, their manufacture, represented by the formula: ##STR1## where Ar is hydrogen, a phenyl radical which may or may not be substituted, thenyl, furyl, naphthyl, a lower alkyl, cycloalkyl, aralkyl radical; B is a linear or branched lower alkyl radical, either saturated or ethylinically unsaturated; R.sub.1 is hydrogen or a phenyl radical; X is hydrogen or a lower alkyl or alkoxy radical and n=1, as well as salts, esters, aminoesters and amides. Compounds and their derivatives may be used as medicines, in particular in the control of tumors.
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