Intermediates for making analgesic N-phenyl-N-(3-OR.sup.1 -3-Me-4-piperidinyl)amides
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United States of America Patent
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Feb 7, 1995
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N/A
app pub date -
Dec 11, 1992
filing date -
Dec 18, 1990
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Expired
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Abstract
Novel piperidinyl intermediates as set forth below wherein R, R.sup.1 and Ar are as set forth in the specification and W is either hydrogen or benzyloxycarbonyl. The intermediates are useful in the preparation of N-phenyl-N-(4-piperidinyl) amides having potent analgesic activity. ##STR1##
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