Methods and compositions for treatment of central and peripheral nervous system disorders and novel compounds useful therefor
AssigneeIsreal Institute for Biological Research
InventorsAbraham Fisher, Nira Bar-Ner, Yishai Karton
Life of this patent
Estimating the term…
Abstract
There are provided methods for the treatment of diseases involving dysfunction of the peripheral and central nervous system comprising administering one or more spiro compounds. Also provided are pharmaceutical compositions useful in such methods, compounds for use in the preparation of such pharmaceutical compositions, processes for preparing compounds useful in the practice of such methods, and some novel such compounds per se.
Claims80
A compound of the formula (I):
- wherein:
- C denotes a spiro carbon atom shared by ring A and the ring containing a, b, d and e;
- A is selected from the group consisting of:
- R is selected from H, C1-C8 straight- or branched-chain alkyl, or —CH2—P(═O)(OH)2;
- a is —O— or —S—;
- b is —CR1R2— or —C(R1)═;
- d is selected from the group consisting of ═N—, —C(═O)—, —C(═S)— and ═N(R3)═O;
- e is selected from the group consisting of —CH2—, —CHR4—, —NH—, —NR5—, —N(SO2R6)— and —N(C(═O)R6)—;
- R, R1, R2, R3, R4 are each independently selected from the group consisting of H, C1-6 alkoxy, C2-6 hydroxyalkyl, C2-6 alkenyl, C2-6 alkynyl, and C1-6 alkyl optionally substituted by one to three phenyls;
- R5 is independently selected from the group consisting of H, C1-6 alkyl optionally substituted by one, two or three phenyls, C1-6 alkoxy, C2-6 hydroxyalkyl, C2-6 alkenyl, C2-6 alkynyl, optionally substituted phenyl, heteroaryl, and C1-6 alkyl optionally substituted by one to three phenyls;
- or, when the compound of formula (I) is a dimer, in which both halves of the dimer share a single R5, R5 is selected from the group consisting of —(CH2)n— and —(CH2O)n—, wherein n is 1 to 6;
- and
- R6 is selected from the group consisting of C1-6 alkyl, C1-6 alkoxy, C1-6 alkylthio, C2-6 hydroxyalkyl, C2-6 alkenyl, C2-6 alkynyl, and C3-7 cycloalkyl, each optionally substituted by from 1-6 halogen atoms, hydroxy-C1-6-alkyl, aryl substituted with a halogen, nitro, amino, hydroxyl, or CF3 group, C1-6 alkyl substituted by one to three aryl groups, and Cm alkyl-X, wherein m=0 to 6 and X is selected from the group consisting of indole, C1-6 alkyl indole, isoindolyl, 3-pyridinyl, 3-piperidinyl, benzimidazolyl, thienyl, isothiazolyl, imidazolyl, pyrazinyl, benzofuranyl, quinolyl, isoquinolyl, benzothienyl, isobenzofuryl, pyrazolyl, indolyl, isoindolyl, benzimidazolyl, purinyl, carbazolyl, oxazolyl, thiazolyl, isothiazolyl, 1,2,5-thiadiazolyl, isooxazolyl, pyrrolyl, pyrazolyl, quinazolinyl, pyridazinyl, pyrazinyl, cinnolinyl, phthalazinyl, quinoxalinyl, xanthinyl, hypoxanthinyl, and pteridinyl;
- or an enantiomer, diastereomer, racemate, tautomer, geometrical isomer, dimer, metabolite or pharmaceutically acceptable salt thereof,
- with the proviso that when A is
- R is —CH3, a is S, b is —CH(CH2CH3)— and d is —C(═O)—, then e is not —NH— (AF267 or an enantiomer thereof), and
- with the further proviso that when A is
- R is —CH3, a is S, b is —C(CH3)═ and d is ═N—, then e is not —CH2— (AF150(S)).
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10-20. (canceled)
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30-32. (canceled)
34-35. (canceled)
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A pharmaceutical composition comprising:
- (a) an efficacious amount of a compound selected from the group consisting of (S)-2-ethyl-8-methyl-1-thia-4,8-diaza-spiro[4.5]decan-3-one (AF267B), (S)-2-Ethyl-1-thia-4,8-diaza-spiro[4.5]decan-3-one (AF292), and (S)-Ethyl-4-(3-1H-indol-3-yl-propionyl)-8-methyl-1-thia-4,8-diaza-spiro[4.5]decan-3-one (AF704B), pharmaceutically acceptable salts thereof or mixtures of such compounds or salts, and
- (b) an efficacious amount of a compound selected from the group consisting of an immunotherapeutic compound against beta-amyloids and compounds that bind to amyloids, and a pharmaceutically acceptable carrier, diluent or exicipient therefor.
42-44. (canceled)
48-71. (canceled)
A pharmaceutical composition for treating or reducing cerebral amyloid angiopathy comprising:
- (a) an efficacious amount of a compound selected from the group consisting of AF267B, AF292, and AF704B, pharmaceutically acceptable salts thereof or mixtures of such compounds or salts, and
- (b) an efficacious amount of a compound selected from the group consisting of an immunotherapeutic compound against beta-amyloids and compounds that bind to amyloids, and a pharmaceutically acceptable carrier, diluent or excipient.
73-78. (canceled)
Human or animal blood containing the compound (S)-2-Ethyl-1-thia-4,8-diaza-spiro[4.5]decan-3-one (AF292), or a metabolite or pharmaceutically acceptable salt thereof.
80-84. (canceled)
A process for the preparation of 2-ethyl-8-methyl-1-thia-4,8-diaza-spiro[4.5]decan-3-one (AF267), comprising reacting 4-methyl piperidone with 2-mercaptobutyric acid and ammonia.
A process for the preparation of AF267B, comprising racemizing AF267A and isolating AF267B from the racemic mixture.
A process for the synthesis of AF267B comprising contacting (R)-2-mercaptobutyric acid with ammonium acetate and 1-methyl-4-piperidone.
90-92. (canceled)
A process for the preparation of AF267B isotopically labelled with 13C or 14C, comprising reacting AF287 with 13C— or 14C-labelled ethyl bromide, deprotecting the nitrogen atom at the 4-position of the AF287, and isolating 13C— or 14C-labelled AF267B by chiral chromatography.
A process for the preparation of a mixture of (S)-2-Ethyl-1-thia-4,8-diaza-spiro[4.5]decan-3-one (AF292) and (R)-2-Ethyl-1-thia-4,8-diaza-spiro[4.5]decan-3-one (AF291) comprising reacting AF267 with a demethylating agent.
A crystalline form of (S)-2-ethyl-8-methyl-1-thia-4,8-diaza-spiro[4.5]decane-3-one (AF267B) characterized by the following data:
- P212121 (No 16) a=10.394 ((10) (α=90°), b=20.133 (2) (β=90°), c=5.856 (4) (γ=90°) Å, T=110K.
A crystalline form of (S)-2-ethyl-8-methyl-1-thia-4,8-diaza-spiro[4.5]decane-3-one (AF267B) having the configuration shown in Structure 1 in Example 2.
98-103. (canceled)
Use of the compound (S)-2-ethyl-8-methyl-1-thia-4,8-diaza-spiro[4.5]decan-3-one (AF267B) as a prodrug of the compound (S)-2-Ethyl-1-thia-4,8-diaza-spiro[4.5]decan-3-one (AF292).
Use of 2-Ethyl-4-(3-1H-indol-3-yl-propionyl)-8-methyl-1-thia-4,8-diaza-spiro[4.5]decan-3-one in racemic form (AF704) or as the S-enantiomer thereof (AF704B), a prodrug of at least one of AF267B, AF292 and indole-3-propionic acid.
109-112. (canceled)
Use of the compound (S)-2-Ethyl-1-thia-4,8-diaza-spiro[4.5]decan-3-one (AF292), or a metabolite or pharmaceutically acceptable salt thereof, in the preparation of a pharmaceutical composition for both stimulating the M1 muscarinic receptor and antagonizing the M3 muscarinic receptor.
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119-127. (canceled)
Use of a combination of:
- (a) a compound selected from the group consisting of AF267B, AF292, and AF704B, pharmaceutically acceptable salts thereof or mixtures of such compounds or salts, and
- (b) a compound selected from the group consisting of an immunotherapeutic compound against beta-amyloids and compounds that bind to amyloids, in the preparation of a pharmaceutical composition for treating or reducing cerebral amyloid angiopathy.
Use of AF267B, AF292, pharmaceutically acceptable salts thereof or a mixture of AF267B, AF292 or pharmaceutically acceptable salts thereof in the preparation of a pharmaceutical composition for the treatment of schizophrenia or for the amelioration of symptoms of schizophrenia.
130-134. (canceled)
138-139. (canceled)
A mixture of AF292 or a pharmaceutically acceptable salt thereof and at least one other compound selected from the group consisting of AF267B or a pharmaceutically acceptable salt thereof and AF291 or a pharmaceutically acceptable salt thereof.
141-142. (canceled)
145-149. (canceled)
151-167. (canceled)
A process for the preparation of AF292, comprising reacting optionally N-protected 4-piperidone with ammonia or an ammonium salt and (S)-2-mercaptobutyric acid, and then optionally deprotecting the ring nitrogen atom.
170-173. (canceled)
Dependencies are inferred from the claim text.