ZA200505070B - Substituted 1-piperidin-3-yl-4-piperidin-4-yl-piperazine derivatives and their use as neurokinin antagonists - Google Patents
Substituted 1-piperidin-3-yl-4-piperidin-4-yl-piperazine derivatives and their use as neurokinin antagonists Download PDFInfo
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- ZA200505070B ZA200505070B ZA200505070A ZA200505070A ZA200505070B ZA 200505070 B ZA200505070 B ZA 200505070B ZA 200505070 A ZA200505070 A ZA 200505070A ZA 200505070 A ZA200505070 A ZA 200505070A ZA 200505070 B ZA200505070 B ZA 200505070B
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Description
. SUBSTITUTED 1-PIPERIDIN-3-YL-4-PIPERIDIN-4-YL-PIPERAZINE
DERIVATIVES AND THEIR USE AS NEUROKININ ANTAGONISTS
This invention concerns substituted 1-piperidin-3-yl-4-piperidin-4-yl-piperazine derivatives having neurokinin antagonistic activity, in particular NK, antagonistic activity, a combined NK,/NKj3 antagonistic activity and a combined NK/NK»/NK3 antagonistic activity, their preparation, compositions comprising them and their use as a medicine, in particular for the treatment of schizophrenia, emesis, anxiety and depression, irritable bowel syndrom (IBS), circadian rhythm disturbances, visceral pain, neurogenic inflammation, asthma, micturition disorders such as urinary incontinence and nociception.
Tachykinins belong to a family of short peptides that are widely distributed in the mammalian central and peripheral nervous system (Bertrand and Geppetti, Trends
Pharmacol. Sci. 17:255-259 (1996) ; Lundberg, Can. J. Pitysiol. Pharmacol. 73:908- 914 (1995) ; Maggi, Gen. Pharmacol. 26:911-944 (1995) ; Regoli et al., Pharmacol.
Rev. 46 (1994)). They share the common C-terminal sequence Phe-Xaa-Gly-Leu-Met-
NH,. Tachykinins released from peripheral sensory nerve endings are believed to be involved in neurogenic inflammation. In the spinal cord/central nervous system, tachykinins may play a role in pain transmission/perception and in some autonomic reflexes and behaviors. The three major tachykinins are Substance P (SP),
Neurokinin A (NK) and Neurokinin B (NKg) with preferential affinity for three distinct receptor subtypes, termed NK;, NK», and NK, respectively. However, functional studies on cloned receptors suggest strong functional cross-interaction between the 3 tachykinins and their corresponding receptors (Maggi and Schwartz,
Trends Pharmacol. Sci. 18: 351-355 (1997)).
Species differences in structure of NK; receptors are responsible for species- related potency differences of NK, antagonists (Maggi, Gen. Pharmacol. 26:911-944 (1995) ; Regoli ef al., Pharmacol. Rev. 46(4):551-599 (1994)). The human NK, : . receptor closely resembles the NK receptor of guinea-pigs and gerbils but differs markedly from the NK, receptor of rodents. The development of neurokinin . antagonists has led to date to a series of peptide compounds of which might be
- anticipated that they are metabolically too labile to be employed as pharmaceutically active substances (Longmore J. et al., DN&P 8(1):5-23 (1995)).
The tachykinins are involved in schizophrenia, depression, (stress-related) anxiety states, emesis, inflammatory responses, smooth muscle contraction and pain perception.
Neurokinin antagonists are in development for indications such as emesis, anxiety and depression, irritable bowel syndrome (IBS), circadian rhythm disturbances, visceral pain, neurogenic inflammation, asthma, micturition disorders, and nociception. In particular, NK; antagonists have a high therapeutic potential in emesis and depression and NK; antagonists have a high therapeutic potential in asthma treatments. NK; antagonists seem to play a role in the treatment of pain/inflammation (Giardina, G. et al. Exp. Opin. Ther. Patents, 10(6): 939-960 (2000)) and schizophrenia.
Schizophrenia
The NK; antagonist SR142801 (Sanofi) was recently shown to have antipsychotic activity in schizophrenic patients without affecting negative symptoms (Arvantis, L.
ACNP Meeting, December 2001). Activation of NK receptors causes anxiety, stressfull events evoke elevated substance P (SP) plasma levels and NK, antagonists are reported to be anxiolytic in several animal models. The NK, antagonist from Merck,
MK-869 shows antidepressant effects in major depression, but data were not conclusive due to a high placebo response rate. Moreover, the NK; antagonist from Glaxo-
Welcome (S)-GR205,171 was shown to enhance dopamine release in the frontal cortex but not in the striatum (Lejeune et al. Soc. Neurosci., November 2001). It is therefore hypothesized that NK; antagonism in combination with NK, antagonism would be beneficial against both positive and negative symptoms of schizophrenia.
Anxiety and depression
Depression is one of the most common affective disorders of modern society with a high and still increasing prevalence, particularly in the younger members of the population. The life time prevalence rates of Major depression (MDD, DSM-IV) is currently estimated to be 10-25 % for women and 5-12 % for men, whereby in about 25 % of patients the life time MDD is recurrent, without full inter-episode recovery and superimposed on dysthymic disorder. There is a high co-morbidity of depression with . other mental disorders and, particularly in younger population high association with drug and alcohol abuse. In the view of the fact that depression primarily affects the - population between 18-44 years of age e.g. the most productive population, it is obvious that it imposes a high burden on individuals, families and the whole society.
Among all therapeutic possibilities, the therapy with antidepressants is incontestably the most effective. A large number of antidepressants have been ) developed and introduced to the market in the course of the last 40 years. Nevertheless, none of the current antidepressants fulfill all criteria of an ideal drug (high therapeutic and prophylactic efficacy, rapid onset of action, completely satisfactory short- and long- term safety, simple and favourable pharmacokinetics) or is without side effects which in one or the other way limits their use in all groups and subgroups of depressed patients.
Since no treatment of the cause of depression exists at present, nor appears imminent, and no antidepressant is effective in more than 60-70 % of patients; the development of a new antidepressant which may circumvent any of the disadvantages of the available drugs is justified.
Several findings indicate involvement of SP in stress-related anxiety states.
Central injection of SP induces a cardiovascular response resembling the classical "fight or flight" reaction characterised physiologically by vascular dilatation in skeletal muscles and decrease of mesenteric and renal blood flow. This cardiovascular reaction is accompanied by a behavioural response observed in rodents after noxious stimuli or stress (Culman and Unger, Can. J. Physiol. Pharmacol. 73:885-891 (1995)). In mice, centrally administered NK; agonists and antagonists are anxiogenic and anxiolytic, respectively (Teixeira et al., Eur. J. Pharmacol. 311:7-14 (1996)). The ability of NK, antagonists to inhibit thumping induced by SP (or by electric shock; Ballard et al.,
Trends Pharmacol. Sci. 17:255-259 (2001)) might correspond to this antidepressant / anxiolytic activity, since in gerbils thumping plays a role as an alerting or warning signal to conspecifics.
The NK; receptor is widely distributed throughout the limbic system and fear- processing pathways of the brain, including the amygdala, hippocampus, septum, hypothalamus, and periaqueductal grey. Additionally, substance P is released centrally in response to traurnatic or noxious stimuli and substance P-associated neurotransmission may contribute to or be involved in anxiety, fear, and the emotional 3 disturbances that accompany affective disorders such as depression and anxiety. In support of this view, changes in substance P content in discrete brain regions can be observed in response to stressful stimuli (Brodin et al., Neuropeptides 26:253-260
Central injection of substance P mimetics (agonists) induces a range of defensive behavioural and cardiovascular alterations including conditioned place aversion : (Elliott, Exp. Brain. Res. 73:354-356 (1988)), potentiated acoustic startle response (Krase et al.. Behav. Brain. Res. 63:81-88 (1994)), distress vocalisations, escape behaviour (Kramer et al., Science 281:1640-1645 (1998)) and anxiety on the elevated plus maze (Aguiar and Brandao, Physiol. Behav. 60:1183-1186 (1996)). These compounds did not modify motor performance and co-ordination on the rotarod apparatus or ambulation in an activity cage. Down-regulation of substance P biosynthesis occurs in response to the administration of known anxiolytic and antidepressant drugs (Brodin et al., Neuropeptides 26:253-260 (1994) ; Shirayama et al., Brain. Res. 739:70-78 (1996)). Similarly, a centrally administered NK, agonist- induced vocalisation response in guinea-pigs can be antagonised by antidepressants such as imipramine and fluoxetine as well as L.-733,060, an NK antagonist. These studies provide evidence suggesting that blockade of central NK, receptors may inhibit psychological stress in a manner resembling antidepressants and anxiolytics (Rupniak and Kramer, Trends Pharmacol. Sci. 20:1-12 (1999)), but without the side effects of present medications. Emesis
Nausea and vomiting are among the most distressing side effects of cancer chemotherapy. These reduce the quality of life and may cause patients to delay or refuse, potentially curative drugs (Kris et al., J. Clin. Oncol., 3:1379-1384 (1985)).
The incidence, intensity and pattern of emesis is determined by different factors, such as the chemotherapeutic agent, dosage and route of administration. Typically, early or acute emesis starts within the first 4 h after chemotherapy administration, reaching a peak between 4 h and 10 h, and decreases by 12 to 24 h. Delayed emesis (developing after 24 h and continuing until 3-5 days post chemotherapy) is observed with most ‘high-emetogenic’ chemotherapeutic drugs (level 4 and 5 according to Hesketh et al., J.
Clin. Oncol. 15:103 (1997)). In humans, these ‘high-emetogenic’ anti-cancer treatments, including cis-platinum, induce acute emesis in > 98% and delayed emesis in 60-90% of cancer patients. . Animal models of chemotherapy such as cisplatin-induced emesis in ferrets (Rudd and Naylor, Neuropharmacology 33:1607-1608 (1994) ; Naylor and Rudd,
Cancer. Surv. 21:117-135 (1996)) have successfully predicted the clinical efficacy of ’ the 5-HT3 receptor antagonists. Although this discovery led to a successful therapy for
. the treatment of chemotherapy- and radiation-induced sickness in cancer patients,
S5-HT; antagonists such as ondansetron and granisetron (either or not associated with dexamethasone) are effective in the control of the acute emetic phase (the first 24 h) but ’ can only reduce the development of delayed emesis (> 24 h) with poor efficacy (De
Mulder et al., Annuals of Internal Medicine 113:834-840 (1990) ; Roila, Oncology 50:163-167 (1993)). Despite these currently most effective treatments for the prevention of both acute and delayed emesis, still 50% of patients suffer from delayed vomiting and/or nausea (Antiemetic Subcommittee, Annals Oncol. 9:811-819 (1998)).
In contrast to 5-HT; antagonists, NK; antagonists such as CP-99,994 (Piedimonte et al., L. Pharmacol. Exp. Ther. 266:270-273 (1993)) and aprepitant (also known as
MK-869 or 1.-754,030 ; Kramer ef al., Science 281:1640-1645 (1998) : Rupniak and
Kramer, Trends Pharmacol. Sci. 20:1-12 (1999)) have now been shown to inhibit not only the acute but also the delayed phase of cisplatin-induced emesis in animals (Rudd etal. Br. J. Pharmacol. 119:931-936 (1996) ; Tattersall et al., Neuropharmacology 39:652-663 (2000)). NK, antagonists have also been demonstrated to reduce ‘delayed’ emesis in man in the absence of concomitant therapy (Cocquyt et al., Eur. J. Cancer 37:835-842 (2001) ; Navari et al., N. Engl. L. Med. 340:190-195 (1999)). When administered together with dexamethasone and 5-HT;3 antagonists, moreover, NK; antagonists (such as MK-869 and CJ-11,974, also known as Ezlopitant) have been shown to produce additional effects in the prevention of acute emesis (Campos et al., J.
Clin. Oncol. 19:1759-1767 (2001) ; Hesketh et al., Clin. Oncol. 17:338-343 (1999)).
Central neurokinin NK, receptors play a major role in the regulation of emesis.
NK; antagonists are active against a wide variety of emetic stimuli (Watson et al., Br. J.
Pharmacol, 115:84-94 (1995) ; Tattersall et al., Neuropharmacol. 35:1121-1129 (1996) ; Megens et al., J. Pharmacol. Exp. Ther. 302:696-709 (2002)). The compounds are suggested to act by blocking central NK; receptors in the nucleus tractus solitarius.
Apart from NK; antagonism, CNS penetration is thus a prerequisite for the antiemetic activity of these compounds. Loperamide-induced emesis in ferrets can be used as a fast and reliable screening model for the antiemetic activity of NK; antagonists.
Further evaluation of their therapeutic value in the treatment of both the acute and the delayed phases of cisplatin-induced emesis has been demonstrated in the established . ferret model (Rudd et al., Br. J. Pharmacol. 119:931-936 (1994)). This model studies both ‘acute’ and ‘delayed’ emesis after cisplatin and has been validated in terms of its sensitivity to 5-HT3 receptor antagonists, glucocorticoids (Sam et al., Eur. J.
Pharmacol. 417:231-237 (2001)) and other pharmacological challenges. It is unlikely
. that any future anti-emetic would find clinical acceptance unless successfully treating both the ‘acute’ and ‘delayed’ phases of emesis. ’ Irritable bowel syndrome (IBS)
Patients with irritable bowel syndrome (IBS) experience impaired quality of life, and utilise health care resources extensively as they seek better “solutions” (including unnecessary repeated investigations or even surgery). Although these patients suffer from a ‘benign’ disorder (in other words, they will never die or develop significant complications), they nevertheless cause a significant economic burden by extensive health care resource utilisation, and absence from work.
A reasonable number of pre-clinical publications over the role of NK, receptors in visceral pain has been published. Using NK, receptor knockout mice and NK; antagonists in animal models, different groups have demonstrated the important role played by the NK, receptor in hyperalgesia and visceral pain. The distribution of NK; receptors and substance P favours a major role in visceral rather than in somatic pain.
Indeed more than 80% of visceral primary afferent contain substance P compared with only 25% skin afferents. NK; receptors are also involved in gastrointestinal motility (Tonini et al.. Gastroenterol. 120:938-945 (2001) ; Okano et al., J. Pharmacol, Exp.
Ther. 298:559-564 (2001)). Because of this dual role in both gastrointestinal motility and in nociception, NK, antagonists are considered to have potential to ameliorate symptoms in IBS patients.
Background prior art
Compounds containing the 1-piperidin4-yl-piperazinyl moiety were published in
WO 97/16440-A1, published May 9, 1997 by Janssen Pharmaceutica N.V. for use as substance P antagonists, in WO 02/32867, published April 25, 2002 by Glaxo Group
Ltd. for their special advantages as neurokinin antagonists (more specifically were disclosed 4-piperazin-1-yl-piperidine-1-carboxylic acid amide derivatives), in WO 01/30348-Al, published May 03, 2001 by Janssen Pharmaceutica N.V., for use as substance P antagonists for influencing the circadian timing system, and in WO 02/062784-A1, published August 15, 2002 by Hoffmann-La Roche AG for use as neurokinin-1 antagonists. :
The compounds of the present invention differ from the compounds of the prior art in the substitution of the piperazinyl moiety, being a substituted piperidinyl moiety as well as in their improved ability as potent, orally and centrally active neurokinin
-I- . antagonists with therapeutic value, especially for the treatment of schizophrenia, emesis, anxiety and depression, irritable bowel syndrome (IBS), circadian rhythm disturbances, visceral pain, neurogenic inflammation, asthma, micturition disorders such as urinary incontinence and nociception.
The present invention relates to novel substituted 1-piperidin-3-yl-4-piperidin-4-yl-piperazine derivatives according to the general
Formula (I)
R' (R")q
Q |-igron /\ {= 0
RP—X “(CHa “(Hap “—N_
Alk— Y—AIk—L the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof and prodrugs thereof, wherein : the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof and prodrugs thereof, wherein : n is an integer, equal t0 0, Lor 2 ; m is an integer, equal to 1 or 2, provided that if m is 2, then nis 1; p is an integer equal to 1 or 2 ; q is an integer equal toO or 1 ;
Q is O or NR*;
X is a covalent bond or a bivalent radical of formula -O-, -S- or -NR>- ; each R® independently from each other, is hydrogen or alkyl ; each R! independently from each other, is selected from the group of Ar’, Ar'- alkyl and di(Ar')-alkyl ;
R? is AP, Ar’-alkyl, di(Ar’)alkyl, Het' or Het'-alkyl ;
Y is a covalent bond or a bivalent radical of formula -C(=0)-,-SO-, >C=CH-R or >C=N-R, wherein R is CN or nitro ; each Alk represents, independently from each other, a covalent bond ; a bivalent straight or branched, saturated or unsaturated hydrocarbon radical having from 1 to 6 carbon atoms ; or a cyclic saturated or unsaturated : hydrocarbon radical having from 3 to 6 carbon atoms ; each radical optionally substituted on one or more carbon atoms with one or more
. phenyl, halo. cyano, hydroxy, formyl and amino radicals ;
L is selected from the group of hydrogen, alkyl, alkyloxy, Ar*-oxy, alkyloxycarbonyl, alkylcarbonyloxy, mono- and di(alkyhamino, mono-and di(Ar*)amino, Ar’, Ar’carbonyl, Het” and Het’carbonyl ;
Ar is phenyl, optionally substituted with 1, 2 or 3 substituents, each independently from each other, selected from the group of halo, alkyl, cyano, aminocarbonyl and alkyloxy ;
Ar? is naphthalenyl or phenyl, each optionally substituted with 1, 2 or 3 substituents, each independently from each other, selected from the group of halo, nitro, amino, mono- and di(alkyl)amino, cyano, alkyl, hydroxy, alkyloxy, carboxyl, alkyloxycarbonyl, aminocarbonyl and mono- and di(alkyl)aminocarbonyl ;
Ar is naphthalenyl or phenyl, optionally substituted with 1,2 or 3 substituents, each independently from each other, selected from the group of alkyloxy, alkyl, halo. hydroxy, Ar'carbonyloxycarbonyl, pyridinyl, morpholinyl, pyrrolidinyl, imidazo[1,2-a]pyridinyl, morpholinylcarbonyl, pyrrolidinylcarbonyl, amino and cyano ;
Het' is a monocyclic heterocyclic radical selected from the the group of pyrrolyl, pyrazolyl, imidazolyl, furanyl, thienyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridinyl, pyrimidinyl, pyrazinyl and pyridazinyl ; or a bicyclic heterocyclic radical selected from the group of quinolinyl, quinoxalinyl, indolyl, benzimidazolyl, benzoxazolyl, benzisoxazolyl, benzothiazolyl, benzisothiazolyl, benzofuranyl, benzothienyl and 4a,8a- dihydro-2H-chromeny! ; each heterocyclic radical may optionally be substituted on any atom by one or more radicals selected from the group of halo, oxo and alkyl ;
Het? _ is a monocyclic heterocyclic radical selected from the group of tetrahydrofuranyl, pyrrolidinyl, dioxolyl, imidazolidinyl, pyrrazolidinyl, piperidinyl, morpholinyl, dithianyl, thiomorpholinyl, piperazinyl, imidazolidinyl, tetrahydrofuranyl, 2H-pyrrolyl, pyrrolinyl, imidazolinyl, pyrrazolinyl, pyrrolyl, imidazolyl, pyrazolyl, triazolyl, furanyl, thienyl, oxazolyl, isoxazolyl, thiazolyl, thiadiazolyl, isothiazolyl, pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl and triazinyl ; - or a bicyclic heterocyclic radical selected from the group of benzopiperidinyl, quinolinyl, quinoxalinyl, indolyl, isoindolyl, chromenyl, i} benzimidazolyl, imidazo[ 1,2-a]pyridinyl, benzoxazolyl, benzisoxazolyl, benzothiazolyl, benzisothiazolyl, benzofuranyl, benzothienyl, benzo
. [2,1,3]oxadiazolyl, imidazo[2,1-b]thiazolyl , 2,3-dihydrobenzol[1,4]dioxyl and octahydrobenzof1,4]dioxyl ; } each radical may optionally be substituted with one or more radicals selected from the group of Ar', Ar'alkyl, Ar'alkyloxyalkyl, halo, hydroxy, alkyl, alkylcarbonyl, alkyloxy, alkyloxyalkyl, alkyloxycarbonyl, piperidinyl, pyridinyl, pyrrolyl, thienyl, oxo and oxazolyl ; and alkyl is a straight or branched saturated hydrocarbon radical having from 1 to 6 carbon atoms or a cyclic saturated hydrocarbon radicals having from 3 to 6 carbon atoms : optionally substituted on one or more carbon atoms with one or more radicals selected from the group of phenyl, halo, cyano, oxo, hydroxy, formyl and amino.
More in particular, the invention relates to a compound according to the general
Formula (I), the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof and a prodrug thereof, wherein : n isl; m isl; p isl; q is0;
Q isO;
X is a covalent bond ; eachR! is Ar! or Ar'-alkyl ;
R? is Ar®;
Y is a covalent bond or a bivalent radical of formula -C(=0)-, -SO»- or >C=CH-R or >C=N-R, wherein R is CN or nitro ; each Alk represents, independently from each other, a covalent bond ; a bivalent straight or branched, saturated hydrocarbon radical having from 1 to 6 carbon atoms ; or a cyclic saturated hydrocarbon radical having from 3 to 6 carbon atoms ; each radical optionally substituted on one or more carbon atoms with one or more hydroxy radicals ;
L is selected from the group of hydrogen, alkyl, alkyloxy, alkylcarbonyloxy, mono- and di(alkyl)amino, mono-and di(Ar)amino, : Ar, Het? and Het’carbonyl ;
Ar! is phenyl ; . Ar is phenyl, optionally substituted with 1, 2 or 3 alkyl radicals ;
Ar is phenyl, optionally substituted with 1, 2 or 3 substituents, each
. independently from each other, selected from the group of alkyloxy, alkyl, halo, hydroxy, Ar'carbonyloxycarbony! and cyano;
Het? is a heterocyclic radical selected from the group of tetrahydrofuranyl, pyrrolidinyl, imidazolyl, pyrazolyl, furanyl, thienyl, isoxazolyl, thiazolyl, thiadiazolyl, pyridinyl, pyrazinyl, benzo [2,1,3]oxadiazolyl and imidazo[2.1-b]thiazoly! ; each radical optionally substituted with one or more Ar'alkyloxyalkyl, halo, alkyl, alkylcarbonyl, pyridinyl or oxazolyl radicals ; and alkyl is a straight hydrocarbon radical having 1 to 6 carbon atoms, optionally substituted with one or more radicals selected from the group of halo and hydroxy;
More in particular, the invention relates to a compound according to the general
Formula (I), the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof and a prodrug thereof, wherein R' is Ar'methyl and attached to the 2-position or R' is Ar' and attached to the 3-position, as exemplified in either of the following formulas for compounds according to Formula (I) wherein m and n are equal to 1 and Ar is an unsubstituted phenyl.
Q 2 3 Q 2_ 3 >_> =r
R2—X R*—X
More in particular, the invention relates to a compound according to the general
Formula (I), the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof and a prodrug thereof, wherein the R>-X-C(=Q)- moiety is 3,5-di-(trifluoromethyl) phenylcarbonyl.
More in particular, the invention relates to a compound according to the general ) Formula (I), the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof and a prodrug : 30 thereof, wherein p is 1.
. More in particular, the invention relates to a compound according to the general
Formula (I), the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof and a prodrug thereof, wherein Y is -C(=0)-. )
More in particular, the invention relates to a compound according to the general
Formula (I), the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof and a prodrug thereof, wherein Alk is a covalent bond.
More in particular, the invention relates to a compound according to the general
Formula (I), the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof and a prodrug thereof, wherein L is Het’.
More in particular, the invention relates to a compound according to the general
Formula (I), the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof and a prodrug thereof, wherein the compound is a compound selected from the group of compounds with compound number 25, 48. 79, 39, 15, 41, 64, 88, 50, 59 and 3, as mentioned in any one of Tables 1-2 further in this application.
In the framework of this application, alkyl is defined as a monovalent straight or branched saturated hydrocarbon radical having from 1 to 6 carbon atoms, for example methyl, ethyl, propyl, butyl, 1-methylpropyl, 1,1-dimethylethyl, pentyl, hexyl ; alkyl further defines a monovalent cyclic saturated hydrocarbon radical having from 3 to 6 carbon atoms, for example cyclopropyl, methylcyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl. The definition of alkyl also comprises an alkyl radical that is optionally substituted on one or more carbon atoms with one or more phenyl, halo, cyano, oxo, hydroxy, formyl and amino radicals, for example hydroxyalkyl, in particular hydroxymethyl and hydroxyethyl! and polyhaloalkyl, in particular difluoromethyl and trifluoromethyl. . In the framework of this application, halo is generic to fluoro, chloro, bromo and iodo.
. In the framework of this application, with "compounds according to the invention" is meant a compound according to the general Formula (I), the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof and a prodrug thereof.
In the framework of this application, especially in the moiety AIK*-Y-AIK® in
Formula (I), when two or more consecutive elements of said moiety denote a covalent bond, then a single covalent bond is denoted. For example, when Alk”® and Y denote both a covalent bond and Alk® is CHa, then the moiety Alk®-Y-Alk® denotes -CH,. Similary, if AIK? Y and AIk® each denote a covalent bond and L denotes H, then the moiety Ak*-Y-Alk® denotes -H.
The pharmaceutically acceptable salts are defined to comprise the therapeutically active non-toxic acid addition salts forms that the compounds according to Formula (I) are able to form. Said salts can be obtained by treating the base form of the compounds according to Formula (I) with appropriate acids, for example inorganic acids, for example hydrohalic acid, in particular hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid and phosphoric acid ; organic acids, for example acetic acid, ~ hydroxyacetic acid, propanoic acid, lactic acid, pyruvic acid, oxalic acid. malonic acid, succinic acid, maleic acid, fumaric acid, malic acid, tartaric acid, citric acid, methanesulfonic acid, ethanesuvlfonic acid, benzenesulfonic acid, p-toluenesulfonic acid, cyclamic acid, salicylic acid, p-aminosalicylic acid and pamoic acid.
The compounds according to Formula (I) containing acidic protons may also be converted into their therapeutically active non-toxic metal or amine addition salts forms by treatment with appropriate organic and inorganic bases. Appropriate base salts forms comprise, for example, the ammonium salts, the alkaline and earth alkaline metal salts, in particular lithium, sodium, potassium, magnesium and calcium salts, salts with organic bases, e.g. the benzathine, N-methyl-D-glucamine, hybramine salts, and salts with amino acids, for example arginine and lysine.
Conversely, said salts forms can be converted into the free forms by treatment with an appropriate base or acid.
The term addition salt as used in the framework of this application also comprises the solvates that the compounds according to Formula (I) as well as the salts thereof, are able to form. Such solvates are, for example, hydrates and alcoholates.
The N-oxide forms of the compounds according to Formula (I) are meant to comprise those compounds of Formula (I) wherein one or several nitrogen atoms are oxidized to the so-called N-oxide, particularly those N-oxides wherein one or more tertiary nitrogens (e.g of the piperazinyl or piperidinyl radical) are N-oxidized. Such N- oxides can easily be obtained by a skilled person without any inventive skills and they are obvious alternatives for the compounds according to Formula (I) since these compounds are metabolites, which are formed by oxidation in the human body upon uptake . As is generally known, oxidation is normally the first step involved in drug metabolism ( Textbook of Organic Medicinal and Pharmaceutical Chemistry, 1977, pages 70- 75). As is also generally known, the metabolite form of a compound can also be administered to a human instead of the compound per se, with much the same effects,
The compounds according to the invention possess at least 2 oxydizable nitrogens (tertiary amines moieties). It is therefore highly likely that N-oxides will form in the human metabolism.
The compounds of Formula (I) may be converted to the corresponding N-oxide forms following art-known procedures for converting a trivalent nitrogen into its
N-oxide form. Said N-oxidation reaction may generally be carried out by reacting the starting material of Formula (I) with an appropriate organic or inorganic peroxide.
Appropriate inorganic peroxides comprise, for example, hydrogen peroxide, alkali metal or earth alkaline metal peroxides, e.g. sodium peroxide, potassium peroxide; appropriate organic peroxides may comprise peroxy acids such as, for example, benzenecarboperoxoic acid or halo substituted benzenecarboperoxoic acid, e.g. 3-chlorobenzenecarboperoxoic acid, peroxoalkanoic acids, e.g. peroxoacetic acid, alkythydroperoxides, e.g. tert-butyl hydroperoxide. Suitable solvents are, for example, water, lower alkanols, e.g. ethanol and the like, hydrocarbons, e.g. toluene, ketones, ¢.g. 2-butanone, halogenated hydrocarbons, e.g. dichloromethane, and mixtures of such solvents.
The term “stereochemically isomeric forms” as used hereinbefore defines all the : possible isomeric forms that the compounds of Formula (I) may possess. Unless otherwise mentioned or indicated, the chemical designation of compounds denotes the } mixture of all possible stereochemically isomeric forms, said mixtures containing all diastereomers and enantiomers of the basic molecular structure. More in particular,
: stereogenic centers may have the R- or S-configuration; substituents on bivalent cyclic (partially) saturated radicals may have either the cis- or trans-configuration. } Compounds encompassing double bonds can have an E or Z-stereochemistry at said double bond. Stereochemically isomeric forms of the compounds of Formula (T) are obviously intended to be embraced within the scope of this invention.
Following CAS nomenclature conventions, when two stereogenic centers of known absolute configuration are present in a molecule, an R or S descriptor is assigned (based on Cahn-Ingold-Prelog sequence rule) to the lowest-numbered chiral center, the reference center. R* and S* each indicate optically pure stereogenic centers with undetermined absolute configuration. If “a” and “B” are used : the position of the highest priority substituent on the asymmetric carbon atom in the ring system having the lowest ring number, is arbitrarily always in the “a” position of the mean plane determined by the ring system. The position of the highest priority substituent on the other asymmetric carbon atom in the ring system (hydrogen atom in compounds according to Formula (D)) relative to the position of the highest priority substituent on the reference atom is denominated “a”, if it is on the same side of the mean plane determined by the ring system, or “B”, if it is on the other side of the mean plane determined by the ring system.
Compounds according to Formula (I) and some of the intermediate compounds have at least two stereogenic centers in their structure, denoted by an asterisk in Tables 1 and 2.
The invention also comprises derivative compounds (usually called “pro-drugs”) of the pharmacologically-active compounds according to the invention, which are degraded in vivo to yield the compounds according to the invention. Pro-drugs are usually (but not always) of lower potency at the target receptor than the compounds to which they are degraded. Pro-drugs are particularly useful when the desired compound has chemical or physical properties that make its administration difficult or inefficient.
For example, the desired compound may be only poorly soluble, it may be poorly transported across the mucosal epithelium, or it may have an undesirably short plasma half-life. Further discussion on pro-drugs may be found in Stella, V. J. et al., : “Prodrugs”, Drug Delivery Systems, 1985, pp. 112-176, and Drugs, 1985, 29, pp. 455-
Pro-drugs forms of the pharmacologically-active compounds according to the invention will generally be compounds according to Formula (I), the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof and the N-oxide form thereof, having an acid group which is esterified or 5S amidated. Included in such esterified acid groups are groups of the formula -COOR?, where R” is a C,.¢alkyl, phenyl, benzyl or one of the following groups :
Ped foul
Amidated groups include groups of the formula —- CONR’R?, wherein RY is H, C,¢alkyl, phenyl or benzyl and R* is ~OH, H, C, alkyl, phenyl or benzyl. Compounds according to the invention having an amino group may be derivatised with a ketone or an aldehyde such as formaldehyde to form a Mannich base. This base will hydrolyze with first order Kinetics in aqueous solution.
The compounds of Formula (I) as prepared in the processes described below may be synthesized in the form of racemic mixtures of enantiomers that can be separated from one another following art-known resolution procedures. The racemic compounds of Formula (I) may be converted into the corresponding diastereomeric salt forms by reaction with a suitable chiral acid. Said diastereomeric salt forms are subsequently separated, for example, by selective or fractional crystallization and the enantiomers are liberated therefrom by alkali. An alternative manner of separating the enantiomeric forms of the compounds of Formula (I) involves liquid chromatography using a chiral stationary phase. Said pure stereochemically isomeric forms may also be derived from the corresponding pure stereochemically isomeric forms of the appropriate starting materials, provided that the reaction occurs stereospecifically. Preferably if a specific stereoisomer is desired, said compound would be synthesized by stereospecific methods of preparation. These methods will advantageously employ enantiomerically pure starting materials.
; Pharmacology
Substance P and other neurokinins are involved in a variety of biological actions such as pain transmission (nociception), neurogenic inflammation, smooth muscle contraction, plasma protein extravasation, vasodilation, secretion, mast cell degranulation, and also in activation of the immune system. A number of diseases are deemed to be engendered by activation of neurokinin receptors, in particular the NK1 receptor, by excessive release of substance P and other neurokinins in particular cells such as cells in the neuronal plexi of the gastrointestinal tract, unmyelinated primary sensory afferent neurons, sympathetic and parasympathetic neurons and nonneuronal cell types (DN&P 8(1):5-23 (1995) and Longmore J. et al.,"Neurokinin Receptors”
Pharmacological Reviews 46(4):551-599 (1994)).
The compounds of the present invention are potent inhibitors of neurokinin- mediated effects, in particular those mediated via the NK, NK> and NKj receptor, and may therefore be described as neurokinin antagonists, especially as substance P antagonists, as may be indicated in vitro by the antagonism of substance P-induced relaxation of pig coronary arteries. The binding affinity of the present compounds for the human, guinea-pig and gerbil neurokinin receptors may also be determined in vitro in a receptor binding test using 3H-substance-P as radioligand. The subject compounds also show substance-P antagonistic activity in vivo as may be evidenced by, for instance, the antagonism of substance P-induced plasma extravasation in guinea-pigs, or the antagonism of drug-induced emesis in ferrets (Watson et al., Br. J. Pharmacol. 115:84-94 (1995)).
In view of their capability to antagonize the actions of neurokinins by blocking the neurokinin receptors, and in particular by blocking the NK NK; and NKj receptor, the compounds according to the invention are useful as a medicine, in particular in the prophylactic and therapeutic treatment of tachykinin-mediated conditions.
More in particular, it has been found that some compounds exhibit NK antagonistic activity, a combined NK/NKj antagonistic activity and a combined
NK /NK>/NK3 antagonistic activity as can be seen from the Table 8 in the experimental section.
The invention therefore relates to a compound according to the general Formula (D, the pharmaceutically acceptable acid or base addition salts thereof, the
. stereochemically isomeric forms thereof, the N-oxide form thereof and prodrugs thereof, for use as a medicine.
The invention also relates to the use of a compound according to the invention for the manufacture of a medicament for treating, either prophylactic or therapeutic or both, tachykinin mediated conditions.
The compounds according to the invention are useful in the treatment of CNS disorders, in particular schizoaffective disorders, depression, anxiety disorders, stress- related disorders, sleep disorders, cognitive disorders, personality disorders, eating disorders, neurodegenerative diseases, addiction disorders, mood disorders, sexual dysfunction, pain and other CNS-related conditions ; inflammation ; allergic disorders ; emesis ; gastrointestinal disorders, in particular irritable bowel syndrome (IBS); skin disorders ; vasospastic diseases ; fibrosing and collagen diseases ; disorders related to immune enhancement or suppression and rheumatic diseases and body weight control.
In particular, the compounds according to the invention are useful in the treatment or prevention of schizoaffective disorders resulting from various causes, including schizoaffective disorders of the manic type, of the depressive type, of mixed type ; paranoid, disorganized, catatonic, undifferentiated and residual schizophrenia; schizophreniform disorder; delusional disorder; brief psychotic disorder; shared psychotic disorder; substance-induced psychotic disorder; and psychotic disorder not otherwise specified.
In particular, the compounds according to the invention are useful in the treatment or prevention of depression including but not limited to major depressive disorders including bipolar depression ; unipolar depression ; single or recurrent major depressive episodes with or without psychotic features, catatonic features, melancholic features, atypical features or postpartum onset, and, in the case of recurrent episodes, with or without seasonal pattern. Other mood disorders encompassed within the term “major depressive disorder” include dysthymic disorder with early or late onset and with or without atypical features, bipolar I disorder, bipolar II disorder, cyclothymic disorder, recurrent brief depressive disorder, mixed affective disorder, neurotic : depression, post traumatic stress disorder and social phobia ; dementia of the
Alzheimer's type with early or late onset, with depressed mood ; vascular dementia with } depressed mood ; substance-induced mood disorders such as mood disorders induced by alcohol, amphetamines, cocaine, hallucinogens, inhalants, opioids, phencyclidine,
. sedatives, hypnotics, anxiolytics and other substances ; schizoaffective disorder of the depressed type ; and adjustment disorder with depressed mood. Major depressive } disorders may also result from a general medical condition including, but not limited to, myocardial infarction, diabetes, miscarriage or abortion, etc.
In particular, the compounds according to the invention are useful in the treatment or prevention of anxiety disorders, including but not limited to panic attack ; agoraphobia ; panic disorder without agoraphobia ; agoraphobia without history of panic disorder ; specific phobia ; social phobia ; obsessive-compulsive disorder ; post- traumatic stress disorder ; acute stress disorder ; generalized anxiety disorder ; anxiety disorder due to a general medical condition ; substance-induced anxiety disorder ; and anxiety disorder not otherwise specified.
In particular, the compounds according to the invention are useful in the treatment or prevention of stress-related disorders associated with depression and/or anxiety, including but not limited to acute stress reaction ; adjustment disorders, such as brief depressive reaction, prolonged depressive reaction, mixed anxiety and depressive reaction, adjustment disorder with predominant disturbance of other emotions, adjustment disorder with predominant disturbance of conduct, adjustment disorder with mixed disturbance of emotions and conduct and adjustment disorders with other specified predominant symptoms ; and other reactions to severe stress.
In particular, the compounds according to the invention are useful in the treatment or prevention of sleep disorders, including but not limited to dysomnia and/or parasomnias as primary sleep disorders ; insomnia ; sleep apnea : narcolepsy ; circadian rhythms disorders ; sleep disorders related to another mental disorder ; sleep disorder due to a general medical condition ; and substance-induced sleep disorder.
In particular, the compounds according to the invention are useful in the treatment or prevention of cognitive disorders, including but not limited to dementia ; amnesic disorders and cognitive disorders not otherwise specified, especially dementia caused by degenerative disorders, lesions, trauma, infections, vascular disorders, toxins, anoxia, vitamin deficiency or endocrinic disorders ; dementia of the Alzheimer’s type, : with early or late onset, with depressed mood ; AIDS-associated dementia or amnesic disorders caused by alcohol or other causes of thiamin deficiency, bilateral temporal lobe damage due to Herpes simplex encephalitis and other limbic encephalitis, neuronal loss secondary to anoxia / hypoglycemia / severe convulsions and surgery, degencrative
. disorders, vascular disorders or pathology around ventricle Ill. Furthermore, the compounds according to the invention are also useful as memory and/or cognition enhancers in healthy humans with no cognitive and/or memory deficit.
In particular, the compounds according to the invention are useful in the treatment or prevention of personality disorders, including but not limited to paranoid personality disorder ; schizoid personality disorder ; schizotypical personality disorder ; antisocial personality disorder ; borderline personality disorder ; histrionic personality disorder ; narcissistic personality disorder ; avoidant personality disorder ; dependent personality disorder ; obsessive-compulsive personality disorder and personality disorder not otherwise specified.
In particular, the compounds according to the invention are also useful in the treatment or prevention of eating disorders, including anorexia nervosa ; atypical anorexia nervosa ; bulimia nervosa ; atypical bulimia nervosa ; overeating associated with other psychological disturbances ; vomiting associated with other psychological disturbances ; and non-specified eating disorders.
In particular, the compounds according to the invention arc also useful in the treatment or prevention of neurodegenerative diseases, including but not limited to
Alzheimer’s disease ; Huntington’s chorea ; Creutzfeld-Jacob disease ; Pick’s disease : demyelinating disorders, such as multiple sclerosis and ALS ; other neuropathies and neuralgia ; multiple sclerosis ; amyotropical lateral sclerosis ; stroke and head trauma.
In particular, the compounds according to the invention are also useful in the treatment or prevention of addiction disorders, including but not limited to substance dependence or abuse with or without physiological dependence, particularly where the substance is alcohol, amphetamines, amphetamine-like substances, caffeine, cocaine, hallucinogens, inhalants, nicotine, opioids (such as cannabis, heroin and morphine), phencyclidine, phencyclidine-like compounds, sedative-hypnotics, benzodiazepines and/or other substances, particularly useful for treating withdrawal from the above substances and alcohol withdrawal delirium. . In particular, the compounds according to the invention are also useful in the treatment or prevention of mood disorders induced particularly by alcohol, amphetamines, caffeine, cannabis, cocaine, hallucinogens, inhalants, nicotine, opioids, phencyclidine, sedatives, hypnotics, anxiolytics and other substances.
In particular, the compounds according to the invention are also useful in the } treatment or prevention of sexual dysfunction, including but not limited to sexual desire disorders ; sexual arousal disorders ; orgasmic disorders ; sexual pain disorders ; sexual dysfunction due to a general medical condition ; substance-induced sexual dysfunction and sexual dysfunction not otherwise specified.
In particular, the compounds according to the invention are also useful in the treatment or prevention of pain, including but not limited to traumatic pain such as postoperative pain ; traumatic avulsion pain such as brachial plexus ; chronic pain such as arthritic pain such as occurring in osteo- rheumatoid or psoriatic arthritis ; neuropathic pain such as post-herpetic neuralgia, trigeminal neuralgia, segmental or intercostal neuralgia, fibromyalgia, causalgia, peripheral neuropathy, diabetic neuropathy, chemotherapy-induced neuropathy, AIDS related neuropathy. occipital neuralgia, geniculate neuralgia, glossopharyngeal neuralgia, reflex sympathetic dystrophy and phantom limb pain ; various forms of headache such as migraine, acute or chronic tension headache, temporomandibular pain, maxillary sinus pain and cluster headache ; odontalgia ; cancer pain ; visceral pain ; gastrointestinal pain ; nerve entrapment pain ; sport's injury pain ; dysmennorrhoea : menstrual pain ; meningitis ; arachnoiditis ; musculoskeletal pain ; low back pain such as spinal stenosis, prolapsed disc, sciatica, angina, ankylosing spondyolitis ; gout : bums ; scar pain ; itch ; and thalamic pain such as post stroke thalamic pain.
In particular, the compounds according to the invention are also useful in the treatment or prevention of the following other CNS-related conditions : akinesia, akinetic-rigid syndromes, dyskinesia and medication-induced parkinsonism, Gilles de la
Tourette syndrome and its symptoms, tremor, chorea, myoclonus, tics and dystonia, attention-deficit / hyperactivity disorder (ADHD), Parkinson’s disease, drug-induced
Parkinsonism, post-encephalitic Parkinsonism, progressive supranuclear palsy, multiple system atrophy, corticobasal degeneration, parkinsonism-ALS dementia complex and basal ganglia calcification, behavioral disturbances and conduct disorders in dementia and the mentally retarded, including restlessness and agitation, extra-pyramidal movement disorders, Down’s syndrome and Akathisia.
In particular, the compounds according to the invention are also useful in the } treatment or prevention of inflammation, including but not limited to inflammatory conditions in asthma, influenza, chronic bronchitis and rheumatoid arthritis ;
: inflammatory conditions in the gastrointestinal tract such as, but not limited to Crohn's disease, ulcerative colitis, inflammatory bowel disease and non-steroidal anti-
Rk inflammatory drug induced damage ; inflammatory conditions of the skin such as herpes and eczema ; inflammatory conditions of the bladder such as cystitis and urge incontinence ; and eye and dental inflammation.
In particular, the compounds according to the invention are also useful in the treatment or prevention of allergic disorders. including but not limited to allergic disorders of the skin such as but not limited to urticaria ; and allergic disorders of the airways such as but not limited to rhinitis.
In particular, the compounds according to the invention are also useful in the treatment or prevention of emesis, i.e. nausea, retching and vomiting, including but not limited to acute emesis, delayed emesis and anticipatory emesis ; emesis induced by drugs such as cancer chemotherapeutic agents such as alkylating agents, for example cyclophosphamide, carmustine, lomustine and chlorambucil ; cytotoxic antibiotics, for example dactinomycin, doxorubicin, mitomycin-C and bleomycin ; anti-metabolites, for example cytarabine, methotrexate and 5-fluorouracil ; vinca alkaloids, for example etoposide, vinblastine and vincristine ; and other drugs such as cisplatin, dacarbazine, procarbazine and hydroxyurea ; and combinations thereof ; radiation sickness ; radiation therapy. such as in the treatment of cancer ; poisons ; toxins such as toxins caused by metabolic disorders or by infection, such as gastritis, or released during bacterial or viral gastrointestinal infection ; pregnancy ; vestibular disorders, such as motion sickness, vertigo, dizziness and Meniere's disease ; post-operative sickness ; gastrointestinal obstruction ; reduced gastrointestinal motility ; visceral pain, such as myocardial infarction or peritonitis ; migraine ; increased intracranial pressure ; decreased intracranial pressure (such as altitude sickness) ; opioid analgesics, such as morphine ; gastro-oesophageal reflux disease ; acid indigestion ; over-indulgence of food or drink ; acid stomach ; sour stomach ; waterbrash/regurgitation ; heartburn, such as episodic heartburn, nocturnal heartburn and meal induced heartburn ; and dyspepsia.
In particular, the compounds according to the invention are also useful in the treatment or prevention of gastrointestinal disorders, including but not limited to : irritable bowel syndrome (IBS), skin disorders such as psoriasis, pruritis and sunburn ; vasospastic diseases such as angina, vascular headache and Reynaud's disease, cerebral . ischaemia such as cerebral vasospasm following subarachnoid haemorrhage ; fibrosing and collagen diseases such as scleroderma and eosinophilic fascioliasis ; disorders
- related to immune enhancement or suppression such as systemic lupus erythematosus and rheumatic diseases such as fibrositis ; cough ; and body weight control. including . obesity.
S Most in particular, the compounds according to the invention are useful for the manufacture of a medicament for treating schizophrenia, emesis, anxiety, depression, irritable bowel syndrome (IBS), circadian rhythm disturbances, pain, neurogenic inflammation, asthma. micturition disorders such as urinary incontinence and nociception.
The present invention also relates to a method for the treatment and/or prophylaxis of tachykinin-mediated diseases, in particular for the treatment and/or prophylaxis of schizophrenia, emesis, anxiety, depression, irritable bowel syndrome (IBS), circadian rhythm disturbances, pain, neurogenic inflammation, asthma, micturition disorders such as urinary incontinence and nociception comprising administering to a human in need of such administration an effective amount of a compound according to the invention, in particular according to Formula (I), the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof, as well as the pro-drugs thercof.
The invention also relates to a pharmaceutical composition comprising a pharmaceutically acceptable carrier and, as active ingredient, a therapeutically effective amount of a compound according to the invention, in particular a compound according to Formula (I), the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof and a prodrug ] thereof
The compounds according to the invention, in particular the compounds according to Formula (I), the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof and the prodrugs thereof, or any subgroup or combination thereof may be formulated into various pharmaceutical forms for administration purposes. As appropriate compositions there may be cited all compositions usually employed for systemically administering : drugs. To prepare the pharmaceutical compositions of this invention, an effective amount of the particular compound, optionally in addition salt form, as the active ingredient is combined in intimate admixture with a pharmaceutically acceptable carrier, which carrier may take a wide variety of forms depending on the form of
, preparation desired for administration. These pharmaceutical compositions are desirable in unitary dosage form suitable, in particular, for administration orally, } rectally, percutaneously, by parenteral injection or by inhalation. For example, in preparing the compositions in oral dosage form, any of the usual pharmaceutical media 5S may be employed such as, for example, water, glycols, oils, alcohols and the like in the case of oral liquid preparations such as suspensions, syrups, elixirs, emulsions and solutions; or solid carriers such as starches, sugars, kaolin, diluents, lubricants, binders, disintegrating agents and the like in the case of powders, pills, capsules and tablets.
Because of their ease in administration, tablets and capsules represent the most advantageous oral dosage unit forms in which case solid pharmaceutical carriers are obviously employed. For parenteral compositions, the carrier will usually comprise sterile water, at least in large part, though other ingredients, for example, to aid solubility, may be included. Injectable solutions, for example, may be prepared in which the carrier comprises saline solution, glucose solution or a mixture of saline and glucose solution. Injectable suspensions may also be prepared in which case appropriate liquid carriers. suspending agents and the like may be employed. Also included are solid form preparations that are intended to be converted, shortly before use, to liquid form preparations. In the compositions suitable for percutancous administration, the carrier optionally comprises a penetration enhancing agent and/or a suitable wetting agent, optionally combined with suitable additives of any nature in minor proportions, which additives do not introduce a significant deleterious effect on the skin. Said additives may facilitate the administration to the skin and/or may be helpful for preparing the desired compositions. These compositions may be administered in various ways, €.g., as a transdermal patch, as a spot-on, as an ointment.
It is especially advantageous to formulate the aforementioned pharmaceutical compositions in unit dosage form for ease of administration and uniformity of dosage.
Unit dosage form as used herein refers to physically discrete units suitable as unitary dosages, each unit containing a predetermined quantity of active ingredient calculated to produce the desired therapeutic effect in association with the required pharmaceutical carrier. Examples of such unit dosage forms are tablets (including scored or coated tablets), capsules, pills, powder packets, wafers, suppositories, injectable solutions or suspensions and the like, and segregated multiples thereof.
Since the compounds according to the invention are potent orally administrable
NK, NK;/NK3 and NK1/NK>/NK3-antagonists, pharmaceutical compositions comprising said compounds for administration orally are especially advantageous.
Synthesis } The compounds according to the invention can generally be prepared by a succession of steps, each of which is known to the skilled person.
The final compounds of Formula (I) are conveniently prepared by reductively
N-alkylating an intermediate compound of Formula (IT) with an intermediate compound of Formula (II) . Said reductive N-alkylation may be performed in a reaction-inert solvent such as, for example. dichloromethane, ethanol or toluene or a mixture thereof, and in the presence of an appropriate reducing agent such as, for example, a borohydride, e.g. sodium borohydride, sodium cyanoborohydride or triacetoxy borohydride. In case a borohydride is used as a reducing agent, it may be convenient to use a complex-forming agent such as, for example, titanium(IV)isopropylate as described in J. Org. Chem, 1990, 55, 2552-2554. Using said complex-forming agent may also result in an improved cis/trans ratio in favour of the trans isomer. It may also be convenient to use hydrogen as a reducing agent in combination with a suitable catalyst such as, for example, palladium-on-charcoal or platinum-on-charcoal. In case hydrogen is used as reducing agent, it may be advantageous to add a dehydrating agent to the reaction mixture such as, for example, aluminium fers-butoxide. In order to prevent the undesired further hydrogenation of certain functional groups in the reactants and the reaction products, it may also be advantageous to add an appropriate catalyst- poison to the reaction mixture, €.g., thiophene or quinoline-sulphur. Stirring and optionally elevated temperatures and/or pressure may enhance the rate of the reaction.
R' (R')q
Q |e /\
SN! >N NH + =<) EE)
RE—X \—(CHpn —(CHa)p Ne
Alk— Y—AIk—L (Im ay
In this and the following preparations, the reaction products may be isolated from the reaction medium and, if necessary, further purified according to methodologies : generally known in the art such as, for example, extraction, crystallization, trituration and chromatography.
. Especially advantageous is the preparation of a final compound according to
Formula (I) according to the previously mentioned reaction scheme in which the Alk- ) Y-Alk-L-moiety is benzyl, thus giving rise to a compound according to Formula (I) in which the Alk-Y-Alk-L-moiety is benzyl. Said final compound is pharmacologically 5S active and can be converted into a final compound according to the invention in which the Alk-Y-Alk-L-moiety is hydrogen by reductive hydrogenation using e.g. hydrogen as a reducing agent in combination with a suitable catalyst such as, for example, palladium-on-charcoal or platinum-on-charcoal. The resulting final compound according to the invention can then be converted into other compounds according to
Formula (I) by art-known transformations, e.g. acylation and alkylation.
In particular, the final compounds of Formula (I) can be prepared by reacting a final compound of Formula (I') with an intermediate compound of Formula (V) wherein
Wlisan appropriate leaving group such as, for example, a halogen, e.g. chloro or bromo, or a sulfonyloxy leaving group, e.g. methanesulfonyloxy or benzene- sulfonyloxy. The reaction can be performed in a reaction-inert solvent such as, for example, a chlorinated hydrocarbon, e.g. dichloromethane or a ketone, e.g. methyl isobutylketone, and in the presence of a suitable base such as, for example, sodium carbonate, sodium hydrogen carbonate or triethylamine. Stirring may enhance the rate of the reaction. The reaction may conveniently be carried out at a temperature ranging between room temperature and reflux temperature.
Rl (AY R! (zp - Q es 31 POND ny x1 A — ny = (1 O
RX CH, \—G, SNH WT AK BX \—CHh —CH NT @) Vv) )
Alternatively, the final compounds of Formula (I!) can also be prepared by reacting a final compound of Formula (I') with a carboxylic acid of Formula (VI). The reaction can be performed in a reaction-inert solvent such as, for example, a chlorinated hydrocarbon, e.g. dichloromethane, in the presence of a suitable base such as, for ’ example, sodium carbonate, sodium hydrogen carbonate or triethylamine and in the presence of an activator, such as e.g. DCC (dicyclohexylcarbodiimide), CDI - 30 (carbonyldiimidazol) and EDCI (1-(3-dimethylaminopropyl)-3-ethylcarbodiimide. HCI).
. Stirring may enhance the rate of the reaction. The reaction may conveniently be carried out at a temperature ranging between room temperature and reflux temperature.
Rr @q A (GP lero | o Q ren
FEO, wee = PECs
R—X (Cr, —Ch)y —NH HO AK RX (Cth \— (CH, NL .
I (VD ()
In particular, the final compounds of Formula (I°) can be prepared by reacting a final compound of Formula (I') with a compound of Formula (VII) wherein W2is an appropriate leaving group such as, for example, a halogen, e.g. chloro or bromo, or a sulfonyloxy leaving group. e.g. methanesulfonyloxy or benzenesulfonyloxy. The reaction can be performed in a reaction-inert solvent such as, for example, a chlorinated hydrocarbon, e.g. dichloromethane, an alcohol, e.g. ethanol, or a ketone, e.g. methyl isobutylketone, and in the presence of a suitable base such as, for example, sodium carbonate, sodium hydrogen carbonate or triethylamine. Stirring may enhance the rate of the reaction. The reaction may conveniently be carried out at a temperature ranging between room temperature and reflux temperature.
R' A Rl CYS
Q reso //\ | lo} Q en /\ | o
NN —" WA L— NN (1 ie Po Ch M ' wok ed oy GH NA gt @) (VID @)
The final compounds of Formula (I) and Formula (I°) can be prepared either by reductive amination or alkylation of a final compound of Formula (I') with either a compound of Formula (VIII) or (IX) wherein W3 in Formula (VII) is an appropriate leaving group such as, for example, a halogen, e.g. chloro or bromo, or a sulfonyloxy leaving group, e.g. methanesulfonyloxy or benzenesulfonyloxy and wherein -CHy-Alk in Formula (I%) is Alk. The reaction can be performed in a reaction-inert solvent such as, for example, a chlorinated hydrocarbon, e.g. dichloromethane, an alcohol, e.g. ) ethanol, or a ketone, e.g. methyl isobutylketone, and in the presence of a suitable base
. such as, for example, sodium carbonate, sodium hydrogen carbonate or triethylamine.
Stirring may enhance the rate of the reaction. The reaction may conveniently be carried out at a temperature ranging between room temperature and reflux temperature.
R' @') R' (RB)
Q les. | Q ret
YN =PRO + WA Lo nN NN nh
RFX CH, —OH, “NH Ak RX brn = oN 0) (VID 9)
R! ®)q R’ Rg
Q le. | O Q len /\
RX “du. (dy, “NH AK RX “Gu, “Gn —N_
CH AKL
@ (IX) )
The starting materials and some of the intermediates are known compounds and are commercially available or may be prepared according to conventional reaction procedures generally known in the art. For example, intermediate compounds of
Formula (IT) may be prepared by reductively N-alkylating an intermediate compound of
Formula (XI) with an intermediate compound of Formula (XII) in which W* is a benzyl radical, after which the resulting compound is subsequently reduced to yield an intermediate compound according to Formula (IT). Said reductive N-alkylation may be performed in a reaction-inert solvent such as, for example. dichloromethane, ethanol, toluene or a mixture thereof, and in the presence of an appropriate reducing agent such as, for example, a borohydride, e.g. sodium borohydride, sodium cyanoborohydride or triacetoxy borohydride. In case a borohydride is used as a reducing agent, it may be convenient to use a complex-forming agent such as, for example, titanium(IV)iso- propylate as described in J. Org. Chem, 1990, 55, 2552-2554. Using said complex- forming agent may also result in an improved cis/trans ratio in favour of the trans isomer. It may also be convenient to use hydrogen as a reducing agent in combination with a suitable catalyst such as, for example, palladium-on-charcoal or platinum-on- charcoal. In case hydrogen is used as reducing agent, it may be advantageous to add a dehydrating agent to the reaction mixture such as, for example, aluminium zert- butoxide. In order to prevent the undesired further hydrogenation of certain functional
; groups in the reactants and the reaction products, it may also be advantageous to add an appropriate catalyst-poison to the reaction mixture, e.g., thiophene or quinoline- sulphur. Stirring and optionally elevated temperatures and/or pressure may enhance the rate of the reaction.
R' R!
Q lien /\ Q rior \
NI d=0 + BN NW — NTN MH
RX Cn “Gp FX bn Cp (XD (XI) (iy
The preparation of intermediate compounds (XI) and (XII) and other intermediates is described in WO 97/16440-A1, published May 9, 1997 by Janssen
Pharmaceutica N.V. which is disclosed herein by reference as well as in other publications mentioned in WO 97/16440-A1, such as , e.g. EP-0,532,456-A.
The following examples are intended to illustrate but not to limit the scope of the present invention.
Experimenta] Part
Hereinafter "RT" means room temperature, "THF" means tetrahydrofuran, "DIPE" means diisopropylether, "DCM" means dichloromethane, "DMF" means
N,N-dimethylformamide, “MIK” means methyl isobutyl keton, “EDCT’ means 1-ethyl- 3-(3’-dimethylaminopropyl)carbodiimide. and “HOBT” means 1-Hydroxy-1H- benzotriazole.
A. Preparation of the intermediate compounds
Example Al a. Preparation of intermediate compound 1
F Oo
F.
F N
- 0) 5)
F F
F
Et:N (0.55 mol) was added to a stirring mixture of 7-(phenylmethyl)-1,4-dioxa-8- azaspiro[4.5]decane (0.5 mol) in toluene (1500ml). 3,5-Bis(trifluoromethyl)benzoyl chloride (0.5 mol) was added over a 1-hour period (exothermic reaction). The mixture was stirred at room temperature for 2 hours, then allowed to stand for the weekend and washed three times with water (500 ml, 2x250 ml). The organic layer was separated, dried, filtered and the solvent was evaporated. Yield: 245 g (100%). Part of this fraction was crystallized from petroleum ether. The precipitate was filtered off and dried. Yield: 1.06 g of intermediate compound 1. bl. Preparation of intermediate compound 2
F 0 | :
F
F N
0)
F E F
HCI cp (300 ml) was added to a mixture of intermediate compound 1 (0.5 mol) in ethanol (300 ml) and HO (300 ml). The reaction mixture was stirred at 60°C for 20 hours. The precipitate was filtered off, ground, stirred in HO, filtered off, washed with petroleum ether and dried. Yield: 192 g of intermediate compound 2 ((+-)-1-[3,5- bis(trifluoromethyl)benzoyl]-2-(phenylmethyl)-4-piperidinone) (89.4%) (mixture of R and S enantiomers).
] b2. Preparation of intermediate compound 9 E and intermediate compound F. 9 R* 10. F N 9) 0
F F
F
F 0
F. g*
F N (10) 0)
F F
F
Intermediate compound 2 was separated into its optical isomers by chiral column chromatography over Chiralpak (CHIRALPAK AS 1000 A 20 mm (DAICEL), eluent: hexane/2-propanol 70/30). Two product fractions were collected and each solvent was evaporated. Yield Fraction 1: 32.6 g of intermediate compound 9 (R) and Fraction 2: 5S 30.4 g of intermediate compound 10 (S). ¢. Preparation of intermediate compound 3 F 0
F
F N
@ Pe
N
F F NG
F
A mixture of intermediate compound 2 (0.046 mol), 1-(phenylmethyl)piperazine (0.051 mol) and Ti-tetraisopropyloxide (0.056 mol) was stirred for 2 hours at 40°C, The reaction mixture was cooled to room temperature. Ethanol, p.a. (350 ml) was added.
NaBH, (0.138 mol) was added. The resulting reaction mixture was stirred for one hour at room temperature, then for one hour at 50°C. More NaBH, (5.2 g) was added and the reaction mixture was stirred for 2 hours at 50°C, Again, NaBH, was added and the reaction mixture was stirred overnight at room temperature, then for 2 hours at 50°C.
Water (10 ml) was added. The mixture was stirred for 15 min. CH>Cl, (200 ml) was ’ 15 added and the mixture was stirred for 15 min. The organic phase was separated, dried
(MgSO), dicalite was added, the mixture was filtered over dicalite, and the filtrate was evaporated. This fraction was separated into (CIS) and (TRANS) by column chromatography over silica gel. The desired (TRANS)-fractions were collected and the solvent was evaporated, giving 14.8 g of residue ((I), 1.06% (CIS)) and 4.9 g of residue ((), 6% (CIS)). Resolution and purification of those (TRANS)-fractions (= 20 gin total) was obtained by chromatography over stationary phase Chiralcel OD (1900Gr) in
Prochrom LC110 35 bar (eluent: hexane/ethanol 90/10). The desired fractions were collected and the solvent was evaporated. Yield: 9.5 g of intermediate compound 3 (2R-trans)-1-[3,5-bis(trifluoromethyl)benzoyl)-2-(phenylmethyl)-4-[4-(phenylmethyl)- 1-piperazinyl]piperidine. d. Preparation of intermediate compound 4 F 0
F.
F N
NT
(
F E F
A solution of intermediate compound 3 (0.288 mol) in methanol (700 ml) was hydrogenated at 40°C with Pd/C, 10% (5 g) as a catalyst. After uptake of Ha (1 equiv), the catalyst was filtered off and the filtrate was evaporated. Yielding 141.2 g of intermediate compound 4 (+)-(2R-trans)-1-[3,5-bis(trifluoromethyl)benzoyl)-2- (phenylmethyl)-4-(1-piperazinyl)piperidine.
Example A2 a. Preparation of S \ intermediate compound 5 I 0
NaH (0.086 mol) was added portionwise to a solution of 3-thiophene ethanol (0.078 mol) in THF at 5 °C under N» flow. The mixture was stirred for 1 hour at 5°C. BuyNI (0.001 mol) and (bromomethyl)benzene (0.080 mol) were added. The mixture was stirred at room temperature for 3 hours, taken up in HO and extracted with AcOEt, . The organic layer was separated, dried (MgSO) and solvent was evaporated. The concentrate 1 (18 g) was purified by column chromatography over silica gel (gradient eluent: Cyclohexane/AcOEt 100/0 to 80/20). The pure fractions were collected and the solvent was evaporated. Yield: 9.9 g intermediate compound 5 (58 %).
b. Preparation of 3 AN intermediate compound 6 0 o + 0
Oo
To a solution of intermediate compound 16 (0.023 mol) in THF (50 m}) at -50 °C,
BuLi[1.6M] (0.025 mol) was added portionwise under N- flow. The temperature was raised slowly to 0°C. The mixture was stirred at 0 °C for 1 hour and cooled to —40°C. A 5S solution of SO,Cl; (0.046 mol) in pentane (50 ml) was added at —40°C. The mixture was stirred at ~40°C for 1 hour. The concentrate was hydrolyzed, extracted with
AcOEt, washed with a saturated solution of NaCl, dried over MgSO; and concentrated, providing 9 g. The concentrate was purified by column chromatography over silica gel (gradient eluent: Cyclohexane/AcOEt 100/0 to 80/20). Yield 1.2 g of intermediate compound 6 (16 %).
Example A3 a. Preparation of BEN intermediate compound 7 S 0 g
NaH (60 % in oil) (0.086 mol, 3.4 g) was added portionwise to a solution of 2-(2- thienyl)ethanol (0.078 mol, 10 g) in THF (150 mi) under N, flow at 5°C. The mixture was stirred at 5°C during 1 hour. Tetrabutylammonium iodide (0.001 mol, 0.3 g) and then (bromomethyl)benzene (0.080 mol, 9.5 ml) were added to the solution. The mixture was stirred at room temperature during 3 hours, poured into water, extracted with ethyl acetate, dried over MgSO, and concentrated. The crude product (18 g) was purified by column chromatography over silica gel (gradient eluent:
CHClx/Cyclohexane 0/100 to 20/80) and the product fractions were concentrated.
Yield: 11.4 g of intermediate compound 7 (66 %). b. Preparation of I intermediate compound 8 I 0)
HOOC —) . n-BuLi (1.6 M) (0.015 mol, 9.45 ml) was added slowly to a solution of intermediate compound 7 (0.014 mol, 3 g) in THF (30 ml) under N, flow at 40°C. The reaction was allowed to warm up slowly to 0°C and cooled to -70°C. Dry ice (~ 2 g) was added. The temperature was slowly allowed to rise to room temperature. NaOH (1 mol per liter, 30 ml) was added, the mixture was washed with diethyl ether, The aqueous layer was acidified with HCI (1N) and extracted with CH,Cl,. The organic layer was dried over
MgSO, and concentrated. Yield: 2.6 g of intermediate compound 8 (71%).
B. Preparation of the final compounds
Example B1 a) Preparation of final compound 1 F 0
N
NY
Fe F NOOO
A mixture of intermediate compound 4 (0.005 mol), 1-(phenylmethyl)-3-piperidinone (0.005 mol) and potassium acetate in methanol (150 ml) was hydrogenated at 50°C with Pd/C 10% (1 g) as a catalyst in the presence of thiophene solution (I ml). After uptake of Hz (1 equiv.), the catalyst was filtered off and the filtrate was concentrated.
The residue was purified by flash column chromatography over silica gel (eluent :
CH;Cl,/(MeOH/NH3) 95/5). The product fractions were collected and the solvent was evaporated. Yield : 2.5 g of final compound 1 (74%). b) Preparation of final compound 2 F o
F N
NT i Ao, &
A solution of final compound 1 (prepared according to B1.a) (0.09 mol) in methanol (500 ml) was hydrogenated at 50°C with Pd/C 10% (5 g) as a catalyst. After uptake of
Hs (1 equiv.), the catalyst was filtered off and the filtrate was concentrated. The residue was purified by column chromatography over silica gel (eluent : CH,Cl/(MeOH/NH;, 85/15). The product fractions were collected and the solvent was evaporated. Yield : 41.3 g of final compound 2 (78.7%).
. ¢) Preparation of final compounds E o (105) 105 and 71 K [2R-[2a,4B(R*)]]
Rd F N
NY 0
F } F “ry 0 { i aa [2R-[20,,4B(S")]]
NY 0
F ! F ry
Bis(1,1-dimethylethyl)dicarbonic acid ester (0.008 mol) was added to a solution of final compound 2 (prepared according to B1.b) (0.007 mol) in CHCl, p.a. (100 ml) and the reaction mixture was stirred for 6 hours at room temperature, The solvent was evaporated and the dry residue was filtered over silica gel (eluent: CH>Cl,/CH;0H 5S 95/5). The product fractions were collected and the solvent was evaporated. The obtained residue was separated by Chiral separation on AD column (eluent: hexane/EtOH 95/5). Two product fractions were collected and their solvent was evaporated. Each residue was purified on a glass filter (gradient eluent: CH,Cl,/CH;0OH 100/0 - 90/10), then the desired products were collected and their solvent was evaporated. Yield fraction 1: 1.2 g of final compound 105 ([2R-[20,4B(R*)]]). Yield fraction 2: 0.75 g of final compound 71 ([2R-[20.,4B(S*)11). d) Preparation of final compound 108 0
F
F N
NY
FF Op
HCl/2-propanol (5 ml) was added to a solution of final compound 105 (prepared according to B1.c) (0.00175 mol) in 2-propanol (50 ml). The reaction mixture was
Claims (17)
1. A compound according to the general Formula @ R! R")q Q gon /\ PN I nN v1 ® RE=X \—(ChHay “(CHa —N_ Alk— Y—AIk—L the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof and prodrugs thereof, wherein : n is an integer, equal to 0, 1 or 2 ; m is an integer, equal to 1 or 2, provided that if m is 2,thennis1; p is an integer equal to 1 or 2 ; q is an integer equal toO or 1 ; Q isOorNR?: X is a covalent bond or a bivalent radical of formula -O-, -S- or -NR>- ; each R® independently from each other, is hydrogen or alkyl ; eachR' independently from each other, is selected from the group of Ar!, Ar'- alkyl and di(Ar")-alkyl ; R® is AC, Ar’-alkyl, di(Ar)alkyl, Het" or Het'-alkyl ; Y is a covalent bond or a bivalent radical of formula -C(=0)-,-S0,-, >C=CH-R or >C=N-R, wherein R is CN or nitro ; each Ak represents, independently from each other, a covalent bond ; a bivalent straight or branched, saturated or unsaturated hydrocarbon radical having from 1 to 6 carbon atoms ; or a cyclic saturated or unsaturated hydrocarbon radical having from 3 to 6 carbon atoms ; each radical optionally substituted on one or more carbon atoms with one or more phenyl, halo, cyano, hydroxy, formyl and amino radicals : L is selected from the group of hydrogen, alkyl, alkyloxy, Ar-oxy, : alkyloxycarbonyl, alkylcarbonyloxy, mono- and di(alkyl)amino, mono-and di(Ar*)amino, Ar, Ar’carbonyl, Het? and Het’carbonyl ; . Ar' is phenyl, optionally substituted with 1, 2 or 3 substituents, each independently from each other, selected from the group of halo, alkyl,
cyano, aminocarbony! and alkyloxy ;
' Ar is naphthalenyl or phenyl, each optionally substituted with 1, 2 or 3 substituents, each independently from each other, selected from the group
- of halo, nitro, amino, mono- and di(alkyl)amino, cyano, alkyl, hydroxy,
alkyloxy, carboxyl, alkyloxycarbonyl, aminocarbonyl and mono- and di(alkyhaminocarbonyl ;
Ar is naphthalenyl or phenyl, optionally substituted with 1, 2 or 3 substituents, each independently from each other, selected from the group of alkyloxy, alkyl, halo. hydroxy, Ar'carbonyloxycarbonyl, pyridinyl,
morpholinyl, pyrrolidinyl, imidazo[1,2-a]pyridinyl, morpholinylcarbonyl, pyrrolidinylcarbonyl, amino and cyano ; :
Het! is a monocyclic heterocyclic radical selected from the the group of pyrrolyl, pyrazolyl, imidazolyl, furanyl, thienyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridinyl, pyrimidinyl, pyrazinyl and pyridazinyl ;
or a bicyclic heterocyclic radical selected from the group of quinolinyl, quinoxalinyl, indolyl, benzimidazolyl, benzoxazolyl, benzisoxazolyl, benzothiazolyl, benzisothiazolyl, benzofuranyl, benzothienyl and 4a,8a- dihydro-2H-chromenyl ; each heterocyclic radical may optionally be substituted on any atom by one or more radicals sclected from the group of halo, oxo and alkyl ;
Het’ is a monocyclic heterocyclic radical selected from the group of tetrahydrofuranyl, pyrrolidinyl, dioxolyl, imidazolidinyl, pyrrazolidinyl, piperidinyl, morpholinyl, dithianyl, thiomorpholinyl, piperazinyl, imidazolidinyl, tetrahydrofuranyl, 2H-pyrrolyl, pyrrolinyl, imidazoliny},
pyrrazolinyl, pyrrolyl, imidazolyl, pyrazolyl, triazolyl, furanyl, thienyl, oxazolyl, isoxazolyl, thiazolyl, thiadiazolyl, isothiazolyl, pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl and triazinyl ; or a bicyclic heterocyclic radical selected from the group of benzopiperidinyl, quinolinyl, quinoxalinyl, indolyl, isoindolyl, chromenyl,
benzimidazolyl, imidazo[1,2-a]pyridinyl, benzoxazolyl, benzisoxazolyl, benzothiazolyl, benzisothiazolyl, benzofuranyl, benzothienyl, benzo [2,1,3]Joxadiazolyl, imidazo[2,1-b}thiazolyl , 2,3-dihydrobenzo[ 1,4]dioxyl and octahydrobenzo[1,4]dioxyl ; each radical may optionally be substituted with one or more radicals selected from the group of Ar', Ar'alkyl, Ar'alkyloxyalkyl, halo, hydroxy, alkyl, alkylcarbonyl, alkyloxy, alkyloxyalkyl, alkyloxycarbonyl, : piperidinyl, pyridinyl, pyrrolyl, thienyl, oxo and oxazolyl ; and alkyl is a straight or branched saturated hydrocarbon radical having from 1 to 6 carbon atoms or a cyclic saturated hydrocarbon radicals having from 3 to 6 carbon atoms ; optionally substituted on one or more carbon atoms with one or more radicals selected from the group of phenyl, halo, cyano, oxo, hydroxy, formyl and amino.
2. A compound according to claim 1, characterized in that n isl; m isl; p isl; q isO; Q isO; X is a covalent bond ; eachR' is Ar' or Ar'-alkyl ; R® is Ar; Y is a covalent bond or a bivalent radical of formula -C(=0)-, -SO;- or ‘ >C=CH-R or >C=N-R, wherein R is CN or nitro ; each Alk represents, independently from each other, a covalent bond ; a bivalent straight or branched, saturated hydrocarbon radical having from 1 to 6 carbon atoms ; or a cyclic saturated hydrocarbon radical having from 3 to 6 carbon atoms ; each radical optionally substituted on one or more carbon atoms with one or more hydroxy radicals : L is selected from the group of hydrogen, alkyl, alkyloxy, alkylcarbonyloxy, mono- and di(alkyl)amino, mono-and di(Ar*)amino, Ar®, Het” and Het>carbonyl ; Ar! is phenyl ; Ar? is phenyl, optionally substituted with 1, 2 or 3 alkyl radicals : Ar is phenyl, optionally substituted with 1, 2 or 3 substituents, each independently from each other, selected from the group of alkyloxy, alkyl, halo, hydroxy, Ar'carbonyloxycarbony! and cyano; Het? is a heterocyclic radical selected from the group of tetrahydrofuranyl, pyrrolidinyl, imidazolyl, pyrazolyl, furanyl, thienyl, isoxazolyl. thiazolyl, thiadiazolyl, pyridinyl, pyrazinyl, benzo [2.1,3}Joxadiazolyl and imidazo[2,1-b]thiazolyl ; each radical optionally substituted with one or more Ar'alkyloxyalkyl, halo, alkyl, alkylcarbonyl, pyridinyl or - oxazolyl radicals ; and alkyl is a straight hydrocarbon radical having 1 to 6 carbon atoms, optionally substituted with one or more radicals selected from the group of halo and hydroxy;
3. A compound according to any of claims 1-2, characterized in that R! is Ar'methyl and attached to the 2-position or R' is Ar! and attached to the 3-position .
4. A compound according to any of claims 1-3, characterized in that the R>-X- C(=Q)- moiety is 3,5-di-(trifluoromethyl) phenylcarbonyl.
5. A compound according to any of claims 1-4, characterized in that pis 1.
6. A compound according to any of claims 1-5, characterized in that Y is -C(=0)-.
7. A compound according to any of claims 1-6, characterized in that Alk is a covalent bond.
8. A compound according to any of claims 1-3, characterized in that L is Het’.
9. A compound selected from the group of compounds with compound number 25, 48,79, 39, 15, 41, 64, 88, 50, 59 and 3, as mentioned in any one of Tables 1-2.
10. A compound according to any one of claims 1-9 for use as a medicine.
11. The use of a compound according to any one of claims 1-10 for the manufacture of a medicament for treating tachykinin mediated conditions.
12. The use of a compound according to claim 11 for the manufacture of a medicament for treating schizophrenia, emesis, anxiety, depression, irritable bowel syndrome (IBS), circadian rhythm disturbances, pain, neurogenic inflammation, asthma, micturition disorders such as urinary incontinence and nociception,
13. A pharmaceutical composition comprising a pharmaceutically acceptable carrier ] 35 and, as active ingredient, a therapeutically effective amount of a compound according to any one of claims 1-9,
} 14. A process for preparing a pharmaceutical composition as claimed in claim 13, characterized in that a pharmaceutically acceptable carrier is intimately mixed with a therapeutically effective amount of a compound as claimed in any one of claims 1-9. S
15. A process for the preparation of a compound of Formula (I") in which an intermediate compound of Formula (II) is reacted with an intermediate compound of Formula (III), wherein the radicals R% X, Q, R', m, n, p and q are as defined in claim 1. (7) Rs ~~ Q fn Oxi Q r fico \ N Yn N NH + ICAS _— MN NC N R2—X chan (cha), R*—X (CH), (CHa)p (I (Im I)
16. A process for the preparation of a compound of Formula (I') in which a final compound of Formula (I"} is reductively hydrogenated, wherein the radicals R?, X, Q,R', m, n, p and q are as defined in claim 1. 1 a) (R')g ~) , R | ® Q lego /\ N lies mY Ey SS RX Nich, Nich, RE—X (CHa \—(Chol, a a
17. A process for the preparation of a compound according to Formula (I') comprising the consecutive steps of 1) obtaining a compound of Formula (I") according to claim 15 ; 2) obtaining a compound of Formula (I') according to claim 16.
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