Nitrate esters and their use for neurological conditions
AssigneeQueen's University at Kingston
InventorsGregory R. J. Thatcher, Brian M. Bennett, James N. Reynolds, Roland J. Boegman, Khem Jhamandas
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Abstract
Compounds and methods for mitigating neurodegeneration, effecting neuroprotection and/or effecting cognition enhancement in a subject are described. Neurological or cognitive conditions are treated by administering to a subject an effective amount of a therapeutic compound comprising a nitrate ester, or a pharmaceutically acceptable salt or ester thereof.
Claims44
A method for mitigating cerebral damage due to ischemia in a subject in need thereof comprising administering to said subject an effective amount of a therapeutic compound such that cerebral damage is mitigated, wherein the therapeutic compound has the formula (Formula I):
- wherein E, F, G are organic radicals which may contain inorganic counterions,
- wherein F and G are not substituted or unsubstituted pyridyl, and
- wherein, when E is C1 alkane, F and G are not both C1 to C3 alkyl radicals bearing one or more nitrate groups or an O linkage.
A method of mitigating cerebral damage due to ischemia in a subject, comprising administering to said subject an effective amount of a therapeutic compound such that cerebral damage is mitigated, wherein the therapeutic compound has the formula (Formula II):
- in which:
- m, n, p are integers from 0 to 10;
- R3,17 are each independently hydrogen, a nitrate group, or A;
- R1,4 are each independently hydrogen or A;
- where A is selected from:
- a substituted or unsubstituted aliphatic group (preferably a branched, or straight-chain aliphatic moiety having from 1 to 24 carbon atoms in the chain), which optionally contains O, S, NR6 and unsaturations in the chain, optionally bearing from 1 to 4 hydroxy, nitrate, amino or aryl, or heterocyclic groups;
- an unsubstituted or substituted cyclic aliphatic moiety having from 3 to 7 carbon atoms in the aliphatic ring, which optionally contains O, S, NR6 and unsaturations in the ring, optionally bearing from 1 to 4 hydroxy, nitrate, amino or aryl, or heterocyclic groups;
- an unsubstituted or substituted aliphatic moiety constituting a linkage of from 0 to 5 carbons, between R1 and R3 and/or between R17 and R4, which optionally contains O, S, NR6 and unsaturations in the linkage, and optionally bearing from 1 to 5 hydroxy, nitrate, amino or aryl, or heterocyclic groups;
- a substituted or unsubstituted aliphatic group (preferably a branched, cyclic or straight-chain aliphatic moiety having from 1 to 24 carbon atoms in the chain), containing carbonyl linkages (e.g. C═O, C═S, C═NOH), which optionally contains O, S, NR8 and unsaturations in the chain, optionally bearing from 1 to 4 hydroxy, nitrate, amino or aryl, or heterocyclic groups;
- a substituted or unsubstituted aryl group;
- a heterocyclic group;
- amino (including alkylamino, dialkylamino (including cyclic amino, diamino and triamino moieties), arylamino, diarylamino, and alkylarylamino);
- hydroxy;
- alkoxy;
- a substituted or unsubstituted aryloxy;
- R2, R5, R18, R19 are optionally hydrogen, A, or X-Y;
- where X is F, Br, Cl, NO2, CH2, CF2, O, NH, NMe, CN, NHOH, N2H3, N2H2R13, N2HR13R14, N3, S, SCN, SCN2H2(R15)2, SCN2H3(R15). SC(O)N(R15)2, SC(O)NHR15, SO3M, SH, SR7, SO2M, S(O)R8, S(O)2R9, S(O)OR8, S(O)2OR9, PO2HM, PO3HM, PO3M2, P(O)(OR15)(OR16), P(O)(OR16)(OM), P(O)(R15)(OR8), P(O)(OM)R15, CO2M, CO2H, CO2R11, C(O), C(O)R12, C(O)(OR13), PO2H, PO2M, P(O)(OR14), P(O)(R13), SO, SO2, C(O)(SR13), SR6, SSR7 or SSR5;
- Y is F, Br, Cl, CH3, CF2H, CF3, OH, NH2, NHR6, NR6R7, CN, NHOH, N2H3, N2H2R13, N2HR13R14, N3, S, SCN, SCN2H2(R15)2, SCN2H3(R15), SC(O)N(R15)2, SC(O)NHR15, SO3M, SH, SR7, SO2M, S(O)R8, S(O)2R9, S(O)OR8, S(O)2OR9, PO2HM, PO3M2, P(O)(OR15)(OR16), P(O)(OR16)(OM), P(O)(R15)(OR8), P(O)(OM)R15, CO2M, CO2H, CO2R11, C(O)R12, C(O)(OR13), C(O)(SR13), SR5, SSR7 or SSR5, or does not exist;
- R6, R7, R8, R9, R11, R12, R13, R14, R15, R16 are the same or different alkyl or acyl groups containing 1-24 carbon atoms which may contain 1-4 ONO2 substituents;
- or C1-C6 connections to R1-R4 in cyclic derivatives;
- or are each independently hydrogen, a nitrate group, or A;
- and
- M is H, Na−, K+, NH4+, N+HkR11(4-k) where k is 0-3, or other pharmaceutically acceptable counterion;
- wherein A is not substituted or unsubstituted pyridyl, and,
- when m=n=p=1, that R1, R2, R18, R19 are selected from the group consisting of H, O linkage, and C1-C2 alkyl, wherein said C1-C2 alkyl is optionally substituted with nitrate, that R3, R17 are selected from the group consisting of H, nitrate, O linkage, and C1-C2 alkyl, wherein said C1-C2 alkyl is optionally substituted with nitrate, and that R4 is not H or C1-C3 alkyl.
Dependencies are inferred from the claim text.