Adjacently substituted cycloalkane-amide analgesics
AssigneeThe Upjohn Company
InventorsLester J. Kaplan, Moses W. McMillan, Jacob Szmuszkovicz
Life of this patent
Estimating the term…
Abstract
N-[2-Amino(oxy or thio group) substituted-cycloaliphatic]phenylacetamide and -benzamide compounds, having the oxy- or thio group substituents on a cycloaliphatic ring carbon adjacent to either of the nitrogen bearing carbons of the cycloaliphatic ring, e.g., cis- and trans-4-bromo-N-[3-methoxy-2-(1-pyrrolidinyl)cyclohexyl]-N-methylbenzamide , and trans-3,4-dichloro-N-methyl-N-[7-(1-pyrridolinyl)-1,4-dioxaspiro[4.5]dec-6 -yl]benzeneacetamide, and salts thereof, have useful analgesic activity and low abuse liability in humans and valuable warm blooded animals. Processes for their production and pharmaceutical compositions and method of use are also disclosed.
Claims20
A compound of the formula
- wherein:
- R is hydrogen or C.sub.1 to C.sub.3 -alkyl;
- R.sub.1 and R.sub.2, taken separately, are each hydrogen or C.sub.1 to C.sub.3 -alkyl;
- R.sub.1 and R.sub.2, taken together with the nitrogen to which they are bonded, are azetidinyl, pyrrolidinyl or piperidinyl;
- R.sub.3, taken separately, is hydroxy, C.sub.1 to C.sub.2 -alkyloxy, or C.sub.1 to C.sub.3 -alkanoyloxy;
- R.sub.4, taken separately, is hydrogen when R.sub.3 is hydroxy, C.sub.1 to C.sub.2 -alkyloxy,or C.sub.1 to C.sub.3 -alkanoyloxy;
- R.sub.3 and R.sub.4, taken together, complete a moiety selected from the group, .dbd.G (oxo or thioxo), --G--CH.sub.2 CH.sub.2 --G--, --G--CH.sub.2 CH.sub.2 CH.sub.2 --G--, --G--CH.sub.2 CH(CH.sub.3)CH.sub.2 --G--, --G--CH.sub.2 C(CH.sub.3).sub.2 CH.sub.2 --G--, wherein both G moieties in the same group are oxygen or bivalent sulfur, .dbd.N.about.OH, and .dbd.N.about.OC(.dbd.O)CH.sub.3, wherein each G is oxygen or bivalent sulfur;
- X and Y are independently selected from the group consisting of hydrogen, a halogen having an atomic number from 9 to 35, trifluoromethyl, nitro, methoxy, hydroxy, azido, C.sub.1 to C.sub.3 -alkyl, phenyl, methanesulfonyl, cyano, amino, C.sub.1 to C.sub.3 -alkoxycarbonyl, C.sub.1 to C.sub.3 -alkanoyloxy, C.sub.1 to C.sub.3 -carboxacylamino(--NHC(.dbd.O)R.sub.6, wherein R.sub.6 is hydrogen or C.sub.1 to C.sub.2 -alkyl);
- p and n are whole number integers selected from the group zero, 2, 3, or 4 such that one of p and n is zero and the other of p and n is 2, 3, or 4;
- q is zero or 1;
- E is oxygen or bivalent sulfur;
- provided that when R is C.sub.1 to C.sub.3 -alkyl, R.sub.1 and R.sub.2 taken together with the nitrogen to which they are bonded complete a pyrrolidinyl ring, p is 3 and n is 0, q is 1, X and Y are chlorine in the 3 and 4 positions, R.sub.3 is not hydroxy, C.sub.1 to C.sub.2 -alkoxy or C.sub.1 to C.sub.3 -alkanoyloxy;
A composition useful in pharmaceutically effective dosage unit form for alleviating pain in warm blooded mammals which comprises a compound of
Dependencies are inferred from the claim text.