Derivatives of 5-pentylamino-5-oxopentanoil and 4-pentlamino-4-oxobutanoic acids with antagonistic activity towards cholecystokinin
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United States of America Patent
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Jan 2, 1990
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N/A
app pub date -
Dec 7, 1988
filing date -
Dec 16, 1986
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Expired
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Abstract
New original derivatives are described of 5-pentylamino -5-oxopentanoic and 4-pentylamino-4-oxobutanoic acids having the formula: ##STR1## in which n is 1 or 2, R.sub.1 is selected from the groups 2-naphthyl, 2 (or 3)-quinolinyl, 2 (or 3)-indolyl, 2 (or 3)-benzofuranyl, 2 (or 3)-benzothiophenyl, and R.sub.2 is a pentyl group or an alkoxyalkyl group with 4 or 5 carbon atoms, preferably pentyl, 2-ethoxyethyl, 3-methoxypropyl or 3-ethoxypropyl. The compounds have a powerful antagonistic activity towards cholecystokinin and are particularly useful in the treatment of illnesses of the digestive system, such as colitis, biliary diskinesia, pancreatitis or in the treatment of disorders of the central nervous system imputable to deficiencies in the physiological neuron levels of cholecystokinin or other related bioactive polypeptides.
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