NZ715951B2 - Therapeutic agents for use in the prophylaxis and/or treatment of hyperkinetic movement disorders - Google Patents
Therapeutic agents for use in the prophylaxis and/or treatment of hyperkinetic movement disorders Download PDFInfo
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- NZ715951B2 NZ715951B2 NZ715951A NZ71595114A NZ715951B2 NZ 715951 B2 NZ715951 B2 NZ 715951B2 NZ 715951 A NZ715951 A NZ 715951A NZ 71595114 A NZ71595114 A NZ 71595114A NZ 715951 B2 NZ715951 B2 NZ 715951B2
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Abstract
The present invention relates to the use of (RS)-[2-(3,4-dimethoxyphenyl)ethyl][2-hydroxy-3-(3-methylphenoxy)propyl]amine having the formula (IA), or a pharmaceutically acceptable salt thereof for the formulation of a pharmaceutical composition,useful for the prophylaxis and/or the treatment of hyperkinetic movement disorders associated with Huntington's disease, Wilson's disease, Tourette syndrome, restless leg syndrome, and tardive dyskinesia. rkinetic movement disorders associated with Huntington's disease, Wilson's disease, Tourette syndrome, restless leg syndrome, and tardive dyskinesia.
Description
WO 02646
eutic agents for use in the prophylaxis and/or treatment of hyperkinetic
movement disorders
This invention relates to a second medical indication of known therapeutic
agents. Particularly, this invention relates to a therapeutic agent having two
aromatic carbocyclic rings connected by a (C4-C7)alkyl chain comprising at
least one nitrogen or oxygen atom for use in the prophylaxis and/or treatment
of hyperkinetic movement disorders.
BACKGROUND ART
Movement disorders are a group of central nervous system ions and/or
diseases in which the control of movement is altered with relative preservation
of strength, muscle bulk, and ical range of motion. They include those
diseases which either involve an excess of movement or with a y of
voluntary and automatic movements. Thus, the movement disorders can be
divided into hyperkinesias (excessive movements), dyskinesias (unnatural
nts), hypokinesias ty of movements), and abnormal ntary
movements.
Hyperkinetic movement disorders (also known as hyperkinesia) imply an
increase in muscular activity that can result in excessive movements, either
normal, or abnormal movements, or a combination of both.
The hyperkinetic movements can be defined as a wide array of movement
disorders characterized by excessive repetitive or sporadic involuntary
movements. The most frequently hyperkinetic symptoms are, among others,
ataxia, athetosis, chorea, dystonia, ballismus, hemifacial spasm, myoclonus,
stereotypes, tardive dystonia, tics, and tremors. The nts can be
rhythmic, discrete, repeated, and/or random. The specific pathophysiology of
these disorders is diverse gh many hyperkinetic movements are the
result of improper regulation of the basal ganglia-thalamocortical circuitry.
Each disorder can e one or more hyperkinetic movements as prominent
symptoms, for example in disorders like Huntington’s disease, tardive
dyskinesia and Tourette syndrome.
Huntington’s disease (HD) is a ntly ted neurodegenerative
WO 02646
genetic disorder that affects muscle coordination and leads to cognitive
decline and psychiatric problems. HD is due to mutations in the gene
encoding for huntingtin, and it is the most common genetic cause of abnormal
ntary writhing movements called chorea, which is why the disease used
to be called Huntington's chorea. Thus, the term “Huntington’s disease” and
“Huntington’s chorea” have the same meaning and are used interchangeable.
The most prominent early effects in HD are in a part of the basal ganglia
called the neostriatum, which is composed of the caudate nucleus and
putamen. Symptoms of the disease can vary between duals, but usually
progress predictably. The earliest symptoms are often subtle problems with
mood or cognition, followed by a general lack of nation and an unsteady
gait. In advanced stages of the disease, uncoordinated, jerky body
movements become more apparent, along with a decline in mental abilities, as
well as behavioural and psychiatric problems. Physical abilities are gradually
impeded until coordinated movement s very difficult, and mental
abilities generally decline into dementia. Although the genetic basis of the
pathology is well known there is not yet a cure for HD. The pharmacological
and non-pharmacological treatments disclosed in the state of the art are
d in zing the symptoms of the disease, mainly in relieving the
hyperkinetic movements associated to HD.
Tourette syndrome (TS) is a neurologic disorder manifested by motor and
vocal or phonic tics usually starting during ood and often accompanied
by some id behavioural problems such as obsessive-compulsive
disorder or attention-deficit hyperactivity disorder. Tics are defined as
ntary, sudden, rapid, recurrent, non-rhythmic movement (motor tics) and
vocalisations (vocal or phonic tics). The cause of TS is yet n, but the
disorder appears to be inherited in the majority of patients, as shown by early
family studies. Little is known about the exact brain mechanisms associated
with tic development and sion, although preliminary evidence from
hemical and neuroimaging igations suggests a primary role for
dysfunction of the dopaminergic pathways within the cortico-striato-cortico-
frontal circuitry. Treatment of TS includes both pharmacotherapy and cognitive
behavioural treatment.
Tardive dyskinesia (TD) is a disorder characterized by involuntary, repetitive
body movements and is the result of treatment with dopamine receptor-
blocking agents. The principal site affected by classic TD is the face,
particularly around the mouth, typically called oral-buccal-facial esia.
The limbs and trunk are affected less often than the mouth. The TD
syndromes tend to appear late in the course of treatment, hence the term
tardive. The symptoms can occur when the patient is taking these drugs or
within a period of time after stopping the treatment.
The restless legs syndrome (RLS) is characterized by a deep, ill-defined
discomfort or dysesthesia in the legs, which arises during prolonged rest, or
when the patient is drowsy and trying to fall asleep, especially at night. The
most commonly associated medical condition is iron deficiency although there
is also evidence to suggest that the disorder in many if not most patients is
transmitted as an autosomal dominant trait.
Wilson’s e is an inborn error of copper metabolism manifest as hepatic
cirrhosis and basal ganglia damage. The ion is due to mutations in the
Wilson disease protein (ATP7B) gene and the initial manifestations of the
s are neurologic in about 40% of patients. The pathologic abnormalities
in the brain are primarily in the basal ganglia, with ry necrosis of the
putamen and caudate, associated with al loss, axonal degeneration
and astrocytosis. In addition, there is cortical atrophy.
One of the pharmacological symptomatic treatments of the hyperkinetic
movement disorders disclosed in the state of the art is based on the
administration of an inhibitor of the lar ine transporter 2
(VMAT2). In the striatum, VMAT2 mainly orts dopamine from cellular
cytosol into synaptic vesicles from nergic neurons, protecting it from
auto-oxidization in the presence of oxygen radicals. Thus, inhibition of VMAT2
reduces the uptake of dopamine into the synaptic vesicles resulting in an
overall reduction in total dopamine.
In particular, tetrabenazine ((SS,RR)—3-|sobutyl-9,10-dimethoxy-1,3,4,6,7,11b-
hexahydro-pyrido[2,1—a]isoquinolinone) is a selective inhibitor of the
monoamine transporter VMAT2 which blocks the transport of dopamine to the
presynaptic neuronal vesicles, impairing its e to the synaptic cleft.
Tetrabenazine is a reversible inhibitor of VMAT2, and the approved drug for
the symptomatic treatment of chorea associated to gton’s disease,
2014/062786
tardive dyskinea, and Tourette syndrome, as well as for symptoms like
hemiballismus.
Unfortunately, tetrabenazine has a poor and variable bioavailability, being also
extensively metabolised by first-pass metabolism. Additionally, tetrabenazine
has a black-box warning because of an se in depression and suicidality,
as well as the potential to cause Parkinsonism and eptic Malignant
Syndrome.
Despite all the research efforts invested in the past, the prophylaxis and/or
treatment of inetic movement disorders is far from being satisfactory.
ore, there is a high unmet need for a safe and effective treatment for
those disorders.
Y OF THE INVENTION
Inventors have surprisingly found that compounds of formula (I) allow the
prevention or the amelioration of hyperkinetic nt disorders. As it is
shown in the examples below, the compounds of the invention have been
identified as VMAT2 inhibitors, exhibiting similar VMAT2 inhibition values
compared with tetrabenazine, the marketed active ient for the treatment
of the above mentioned disorders. Thus, the compounds of formula (I) have
an effective ty in the prophylaxis and/or treatment of hyperkinetic
movement disorders.
The embodiments of the invention can be applied to all symptoms related to
unwanted and excess movement associated to hyperkinesias. The present
invention also engages from initial to advanced stages of the evolution of
hyperkinesias.
ingly, the present invention relates to compounds of formula (I) or their
pharmaceutically acceptable salts
Q /C\H2
R1 X CLH2 /[/ LH2 /Alr
C|H m T n CIH
R2 R3 R4
for use in the prophylaxis and/or treatment of some inetic movement
disorders; wherein: R1 is selected from the group consisting of H, CH3, and
CF3; R2 is selected from the group consisting of H, OH, and CH3; R3 is H or -
CH20H2CI; R4 is H or CH3; Ar is selected from the group consisting of 1-
naphtyl, phenyl, and 3,4-dimethoxyphenyl; X is CH2 or O; and m, and n are
integers selected from 0 and 1; with the o that: R1 is CH3, R2 is OH, R3 is
H, R4 is H, Ar is 3,4-dimethoxyphenyl, X is O, m is 1, and n is 1; or R1 is CF3,
R2 is H, R3 is H, R4 is CH3, Ar is 1-naphtyl, X is CH2, m is 0, and n is 0; or R1 is
H, R2 is CH3, R3 is -CH2CH2CI, R4 is H, Ar is phenyl, X is O, m is 0, and n is 0.
The compounds of formula (I) are: bevantolol, cinacalcet, and
phenoxybenzamine.
Bevantolol is the name commonly used for (RS)-[2—(3,4-
oxyphenyl)ethyl][2—hydroxy—3—(3—methylphenoxy)propyl]amine having
CAS RN 59170—23-9 of formula (lA)
0”H H3CU N
OCH3
(IA)
It is a beta-1 adrenoreceptor nist that has been shown to also have
both agonist and antagonist effects on alpha adrenoreceptor. It is used for the
treatment of angina is and hypertension.
Cinacalcet is the name commonly used for (R)-N-[1-(1-naphthyl)ethyI]
[3-(trifluoromethyl)phenyl]propanamine) having CAS RN 226256—56-0 of
formula (IB).
(”3)
It is an active ingredient that acts as a imetic agent by allosteric
activation of the calcium-sensing receptor sed in the surface of the
chief cell of the parathyroid gland. It has been safely administered to humans
for the treatment of secondary hyperparathyroidism and for the parathyroid
carcinoma.
W02012117073 discloses a combined therapy for the treatment of
neurological disorders which comprises a first active ingredient selected from
a first list and at least a second active ingredient selected from a second list,
wherein the second list es among others cinacalcet. In particular, it is
only disclosed the effect on the cognitive performance on mer's disease
animal models.
Phenoxybenzamine is the name ly used for (RS)-N-benzil—N-(2—
etyl)—1- phenoxy—propan-Z—amine having CAS RN 591 of formula
('0)
00 p3
(IC)
It is a non-selective, irreversible alpha adrenoreceptor antagonist that has
been indicated to control episodes of hypertension and sweating in the
treatment of pheochromocytoma.
In particular, the present invention relates to a compound of formula (IA) or a
pharmaceutically acceptable salt thereof
for use in the prophylaxis and/or treatment of a hyperkinetic movement disorder
associated with Huntington’s disease, Wilson’s disease, Tourette syndrome,
ss leg syndrome, and e esia.
In one ular aspect, the ion provides a use of a compound of formula (IA)
or a pharmaceutically acceptable salt thereof
in the manufacture of a medicament for the prophylaxis and/or treatment of a
hyperkinetic movement disorder associated with Huntington's disease, Wilson's
disease, Tourette syndrome, restless leg syndrome, and tardive dyskinesia in a
subject in need thereof.
Consequently, none of the compounds of formula (I) have y been disclosed or
suggested for the prophylaxis and/or treatment of hyperkinetic movement disorders.
DETAILED DESCRIPTION OF PARTICULAR EMBODIMENTS
As mentioned above, the invention relates to a compound of formula (I) or a
pharmaceutically acceptable salt thereof for use in the prophylaxis and/or treatment
of hyperkinetic movement disorders. This aspect could be formulated as the use of
a compound of formula (I) or a pharmaceutically acceptable salt thereof for the
preparation of a medicament for the prophylactic and/or therapeutic treatment of
hyperkinetic nt disorders in a mammal, including a human. This aspect
could also be formulated as a method for the treatment and/or prophylaxis of a
mammal, including a human, suffering from or being tible of ing from
hyperkinetic movement disorders, the method comprising the administration to said
patient of a therapeutically effective amount of a compound of formula (I) or a
pharmaceutically acceptable salt f, together with pharmaceutically acceptable
excipients or carriers.
In a ular embodiment, a compound of formula (IA) or a pharmaceutically
able salt thereof
H3C\©/O\)\/ \/\<j:OCH3HN
OCH3
(IA)
for use in the prophylaxis and/or treatment of a hyperkinetic movement
disorder ated with Huntington’s disease, tardive dyskinesia, Wilson’s
e, Tourette syndrome, and restless leg syndrome.
In an embodiment, a nd of formula (IA) or a pharmaceutically
acceptable salt thereof for use in the prophylaxis and/or treatment of a
hyperkinetic movement er associated with Huntington’s disease,
Wilson’s disease, Tourette syndrome, and ss leg syndrome.
In an embodiment of the invention, the compounds of formula (I) or their
pharmaceutically able salt thereof can be used in the treatment of
hyperkinetic movement disorders. In a particular embodiment, the compound
of formula (IA) or their pharmaceutically acceptable salt f, for use in the
treatment of the hyperkinetic nt disorder associated with Huntington’s
disease, tardive dyskinesia, Wilson’s disease, Tourette syndrome, and
restless leg syndrome. In an embodiment, for use in the treatment of the
inetic movement disorder associated with Huntington’s disease,
Wilson’s disease, Tourette syndrome, and restless leg syndrome.
Any pharmaceutically acceptable salt of a compound of formula (I) can be
used for the purposes of the invention. The sion “pharmaceutically
acceptable salt” refers to salts prepared from pharmaceutically acceptable
non—toxic acids which are, within the scope of medical judgement, suitable for
use in contact with the tissues of humans and animals t excessive
toxicity, tion, allergic response, or other problem or complication,
commensurate with a reasonable benefit/risk ratio.
Some compounds of the invention can have chiral centres that can give rise to
various stereoisomers. As used herein, the term "stereoisomer" refers to all
isomers of dual compounds that differ only in the orientation of their
atoms in space. The term stereoisomer includes mirror image isomers
(enantiomers), and mixtures of mirror image isomers (racemates, racemic
mixtures). The present invention relates to each of these stereoisomers and
also mixtures thereof. Enantiomers can be separated by conventional
techniques such as chromatography or fractional crystallization. Optical
isomers can be resolved by conventional techniques of optical resolution to
give optically pure isomers. This resolution can be carried out on any chiral
synthetic intermediates or on compounds of the invention. Optically pure
isomers can also be individually obtained using enantiospecific synthesis.
The expression "pharmaceutically acceptable excipients or carriers" refers to
ceutically acceptable materials, itions or vehicles. Each
component must be pharmaceutically acceptable in the sense of being
compatible with the other ingredients of the pharmaceutical composition. It
must also be suitable for use in contact with the tissue or organ of humans
and animals without excessive toxicity, irritation, allergic response,
immunogenicity or other problems or cations commensurate with a
reasonable t/risk ratio.
In a preferred embodiment, the nd for use of the present invention is
that wherein R1 is CH3, R2 is OH, R3 is H, R4 is H, Ar is 3,4-dimethoxyphenyl,
X is O, m is 1, and n is 1. This compound is the known compound bevantolol
of formula (IA).
In another preferred embodiment, the compound for use of the present
ion is that wherein R1 is CF3, R2 is OH, R3 is H, R4 is H, Ar is 3,4—
oxyphenyl, X is O, m is 1, and n is 1. This compound is the known
compound cinacalcet of formula (IB).
In another red embodiment, the compound for use of the present
invention is that wherein R1 is H, R2 is CH3, R3 is -CH2CH2C|, R4 is H, Ar is
, X is O, m is 0, and n is 0. This compound is the known compound
phenoxybenzamine of formula (IC).
The compounds of the invention are used in the prophylaxis and/or treatment
of hyperkinetic movement disorders. Examples of hyperkinetic movements
include abdominal esias, akathisic movements, asynergia, ataxia,
athetosis, ballism, chorea, ria, dystonia, hemifacial spasm,
hyperekplexia, hypnogenic dyskinesias, jumpy stumps, moving toes and/or
fingers, myoclonus, myokymia, myorhythmia, paroxysmal dyskinesias, tics,
and tremor. In an embodiment of the invention, the hyperkinetic movement
disorders are selected from the group consisting of chorea, dystonia,
myoclonus, stereotypy, tics, ballism and tremors. In a preferred ment,
the hyperkinetic movement disorder is selected from tics, ballism, dystonia
and chorea.
In a preferred embodiment, the hyperkinetic movement er is chorea.
The term chorea as used herein refers to a hyperkinetic movement disorder
that consists of involuntary, continual, abrupt, rapid, brief, unsustained,
irregular nts that flow ly from one body part to another.
Chorea may be a manifestation of a primary ogic c disorder, such
as Huntington's e, or it may occur as a neurologic complication of other
ers such as systemic disorders, toxic disorders, and/or a
pharmacological treatment such as the treatment with dopamine receptors
antagonists, causing, for example, e chorea and withdrawal emergent
syndrome.
In another preferred embodiment, the hyperkinetic movement disorder is
ballism. It refers to a rare movement disorder that ts of flailing, ballistic,
and undesired movements of the limbs. The involuntary movement usually
affects only one side of the body; the term hemiballism is used to be
unilateral ballism. Damage to the subthalamic nucleus and the pallido—
subthalamic pathways are the main causes ated with ballism.
In another preferred embodiment the hyperkinetic movement disorder is tic. It
refers to relatively brief, abrupt and intermittent movement (motor tics) or
sounds (vocal or phonic tics). They vary in frequency and intensity and often
change distribution. sed activity in the right caudate nucleus, right
frontal cortex and other cortical areas of the brain has been related to the
appearance of tics.
In another preferred embodiment the hyperkinetic movement disorder is
dystonia. It refers to involuntary movements and extended muscle
contractions. The dystonic patient has twisting body movements, tremor and
l or awkward postures. For some patients the whole body may be
involved in the movements, while for others only certain parts of the body are
affected. Dystonia can be classified by age of onset, by body parts(s) ed
and by etiology (primary or secondary). Decreased neurotransmitter
production in the basal ganglia is most likely associated with primary dystonia
ms. However, there are also a number of dystonias that have a genetic
origin.
The hyperkinetic movements as mentioned above can be associated with
several diseases or disorders. Examples of diseases that feature one or more
hyperkinetic movements include, Huntington’s disease, Huntington's disease-
like diseases (HDL1, HDL2 and HDL3), am chorea, benign hereditary
chorea, canthocytosis, neurodegeneration with brain iron accumulation
(NBIA), athetosis, Wilson’s disease, Tourette syndrome, restless leg
syndrome, tardive dyskinesia, Friedreich ataxia, spinocerebellar ataxia,
le system atrophy, orubral-pallidoluysian atrophy, ataxia with
oculomotor apraxia (types 1 and 2), ataxia telangiectasia, focal dystonias,
idiopathic dystonias such as Oppenheim dystonia and torticollis, dystonia-plus
syndromes, secondary dystonias, Duchenne muscular phy, Down
syndrome, Parkinson’s disease, and progressive supranuclear palsy.
In an embodiment of the ion, suitable diseases that feature one or more
of hyperkinetic movements for the present invention are selected from the
group consisting of Huntington's e, Wilson’s disease, Tourette
syndrome, tardive dyskinesia and restless leg syndrome. In an embodiment,
the hyperkinetic movements for the t invention are selected from the
group consisting of Huntington's disease, ’s disease, Tourette
syndrome and restless leg syndrome. In a preferred ment, the disease
is selected from Huntington's disease, te syndrome, and tardive
dyskinesia.
In a preferred embodiment, the compound of formula (I) for use in the
prophylaxis and/or treatment of chorea associated to Huntington’s disease,
Tourette syndrome, and tardive dyskinesia. Particularly, the compound of
formula (I) for use in the prophylaxis and/or ent of chorea associated to
Huntington’s e. In a particular embodiment, the compound of formula
(IA) for use in the prophylaxis and/or treatment of chorea associated to
Huntington's disease, Tourette syndrome, and e dyskinesia. Particularly,
in the prophylaxis and/or treatment of chorea associated to Huntington’s
disease.
In another preferred embodiment, the compound of formula (I) for use in the
prophylaxis and/or treatment of tics associated to Tourette syndrome and
tardive dyskinesia.
Effective quantities of a compound of formula (I), particularly the compound of
formula (IA) or pharmaceutically acceptable salts thereof are preferably
administered to a patient in need of such treatment according to usual routes
of administration and formulated in usual pharmaceutical compositions,
comprising an effective amount of the active ingredient and a le
ceutically able carrier, and dosage forms according to methods
known in the art.
The expression "therapeutically effective amount" as used herein, refers to the
amount of the active ingredient that, when administered, is sufficient to
prevent development of, or alleviate to some extent, one or more of the
ms of the e which is addressed. The particular dose of
compound administered according to this ion will be determined by the
particular circumstances surrounding the case, including the compound
administered, the route of administration, the particular condition being
treated, and similar considerations. In particular, the term “therapeutically
effective amount of a compound of formula (I)” as used herein, refers to the
amount of the compound of formula (I) that is sufficient to prevent or alleviate
to some extent one or more of the hyperkinetic movement. Particularly, the
amount of the compound of formula (I) that is sufficient to prevent or alleviate
to some extent one or more of the hyperkinetic movement associated to HD.
In particular, the term “therapeutically effective amount of a compound of
formula (IA)” as used herein refers to the amount of the compound of formula
(IA) that is ient to t or alleviate to some extent one or more of the
hyperkinetic movement associated with Huntington’s disease, Wilson’s
disease, Tourette me, tardive dyskinesia and restless leg syndrome;
Particularly, Huntington's disease, Wilson’s disease, Tourette syndrome, and
restless leg syndrome. In an ment, the amount of the compound of
formula (I), particularly (IA) that is sufficient to t or alleviate to some
extent one or more of the hyperkinetic nt ated to Huntington’s
disease, Tourette syndrome and tardive dyskinesia.
The individual dosage as well as the daily dosage varies depending upon the
type and severity of the hyperkinetic movement to be treated, and the specific
patient's se to the medication. Therefore, the exact dual dosage
will be determined according to standard medical principles under the
ion of a physician.
The effective daily dose of a compound of formula (I) for use in the treatment
of hyperkinetic movement disorders is comprised from 1 to 10000 mg/day. In
a particular ment, when the compound of formula (I) is the compound
of formula (IA), the effective daily dose for use in the treatment of hyperkinetic
movement disorders is comprised from 1 to 6000 mg/day; preferably from 1 to
3000 mg/day; more preferably from 1 to 600 mg/day. In another particular
embodiment, when the compound of formula (I) is the compound of formula
(IB), the effective daily dose for use in the treatment of hyperkinetic movement
disorders is comprised from 1 to 4000 mg/day; preferably from 1 to 400
mg/day. In another particular embodiment, when the compound of a (I)
is the compound of formula (IC), the effective daily dose for use in the
treatment of hyperkinetic nt disorders is comprised from 1 to 2000
mg/day; preferably from 1 to 200 mg/day.
The compound of a (I) or a pharmaceutically acceptable salt thereof can
be used either alone or in combination therapy with another compound of
formula (I) or with other therapeutic agents. In a particular embodiment, the
compound of formula (IA) or a pharmaceutically acceptable salt f can be
used either alone or in ation therapy with a compound of formula (IB),
a compound of formula (IC) or with other therapeutic agents.
In an embodiment of the invention, the compound of formula (I) for use in the
prophylaxis and/or treatment of a inetic movement disorder, wherein
said laxis or treatment comprises stering as a unique active
ingredient the compound of formula (I). In a particular ment, the
compound of formula (IA) for use in the prophylaxis and/or treatment of a
hyperkinetic movement disorder associated with Huntington’s disease,
Wilson’s disease, Tourette syndrome, tardive esia and restless leg
syndrome, wherein said prophylaxis or treatment comprises administering as
a unique active ingredient the compound of formula (IA); particularly
Huntington’s e, Wilson’s disease, te syndrome, and restless leg
In another embodiment of the invention, the compound of formula (I) for use in
the prophylaxis and/or treatment of a hyperkinetic movement disorder,
wherein said prophylaxis or treatment comprises administering the compound
of formula (I) in combination therapy with an additional therapeutic agent
selected from the group consisting of another compound of formula (I), a
neuroleptic agent, an anti-glutamatergic agent, a dopamine depleting agent,
an acetyl cholinesterase inhibitor, and e thereof. In a preferred
embodiment, the onal therapeutic agent is selected from the group
consisting of another compound of formula (I), amantadine, riluzole,
tetrabenazine, reserpine, and donepezil; preferably, the additional therapeutic
agent is tetrabenazine.
In a particular embodiment, the compound of formula (IA) for use in the
prophylaxis or treatment comprises stering the compound of a
(IA) in combination therapy with an additional eutic agent selected from
the group consisting of a compound of formula (IB), a compound of formula
(IC), a neuroleptic agent, an anti-glutamatergic agent, a dopamine depleting
agent, an acetyl cholinesterase inhibitor, and mixture thereof;
wherein:
the compound of formula (IB) is
(IB)
and the compound of formula (IC) is
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As will be apparent to the skilled in the art, the combination of the ion
comprising a compound of formula (I) with an additional therapeutic agent is
effective not only when the active ingredients are used in a single
composition, but also when used in two different compositions, either
administered simultaneously, tially or separately after a certain period
of time. Furthermore, the skilled in the art will understand that the compound
of formula (I), particularly compound of formula (IA), can be prescribed to be
used together with the other active ingredient in a combination therapy in
order to prevent and/or treat a inetic nt disorder.
In a particular embodiment, the combination therapy comprises administering
to a subject simultaneously, sequentially or separately the compound of
formula (I) and the additional therapeutic agent. Alternatively, the combination
therapy comprises administering to a subject the compound of formula (I) and
the additional therapeutic agent in a single composition.
In a ular embodiment, the combination therapy comprises administering
to a subject simultaneously, sequentially or separately the compound of
formula (IA) and the onal therapeutic agent. Alternatively, the
combination therapy comprises administering to a subject the compound of
formula (IA) and the additional therapeutic agent in a single composition.
The invention also refers to a combination of a compound of formula (I) and
an additional therapeutic agent as defined above, for use in the prophylaxis
and/or treatment of a hyperkinetic movement er. In a particular
embodiment, the invention also refers to a ation of a compound of
a (IA) and an additional therapeutic agent as d above, for use in
the prophylaxis and/or treatment of a hyperkinetic movement disorder
associated with Huntington’s disease, Wilson's disease, Tourette syndrome,
tardive dyskinesia and restless leg me; particularly in the prophylaxis
and/or treatment of a hyperkinetic movement disorder associated with
Huntington’s disease, Wilson’s disease, te syndrome, and restless leg
syndrome.
In an embodiment of the invention the compound of formula (I) or
pharmaceutically acceptable salts thereof can be conveniently administered to
a patient. Thus, the compound for use of the present invention can be in form
of a pharmaceutical composition comprising an effective amount of a
compound of formula (I) or a pharmaceutically acceptable salt thereof, in
combination with pharmaceutically acceptable excipients or carriers. This
aspect can also be ated as a pharmaceutical composition comprising an
effective amount of a compound of formula (I) or a pharmaceutically
acceptable salt thereof, in combination with pharmaceutically acceptable
ents or carriers for use in the prophylaxis and/or treatment of the
hyperkinetic nt disorders.
In a particular embodiment of the ion, the compound of formula (IA) or
ceutically acceptable salts thereof can be conveniently administered to
a patient. Thus, the compound for use of the t invention can be in form
of a pharmaceutical composition comprising an effective amount of a
compound of formula (IA) or a pharmaceutically acceptable salt thereof, in
combination with pharmaceutically acceptable excipients or carriers. This
aspect can also be formulated as a pharmaceutical composition comprising an
effective amount of a compound of formula (IA) or a pharmaceutically
acceptable salt thereof, in combination with pharmaceutically acceptable
excipients or carriers for use in the prophylaxis and/or treatment of the
inetic movement disorders associated with Huntington’s disease,
Wilson’s disease, Tourette syndrome, tardive dyskinesia and restless leg
syndrome; particularly in the prophylaxis and/or treatment of a inetic
nt disorder associated with Huntington's disease, Wilson’s disease,
Tourette syndrome, and restless leg syndrome.
In an embodiment of the invention, the compound for use is in form of oral unit
dosage form. In r embodiment of the ion, the compound for use is
in form of intraoral unit dosage form including sublingual and buccal. Preferred
pharmaceutical compositions are solid ceutical compositions which
rapidly disintegrate in the mouth of a subject, upon insertion into the buccal
2014/062786
pouch or upon placement under the tongue. Examples of oral dosage forms
suitable for the present invention include solid dosage forms like tablets,
powders, capsules, sachets, as well as liquid , suspensions and elixirs.
Pharmaceutically acceptable carriers and excipients suitable for use in the
oral formulations disclosed herein include, but are not limited to, diluents such
as s and bulking , binders, lubricants, anti-caking ,
disintegrants, ners, buffering agents, preservatives, solubility
enhancers, isotonic agents, suspending and sing agents, wetting or
emulsifying agents, flavours and aromas, thickening , and es.
In r embodiment, the nd for use of the present invention is in
form of inhalation unit dosage form, which is inhaled through the mouth or the
nose administered via an aerosol or a dry powder inhaler. Examples of
inhalation dosage forms suitable for the t invention include, among
others, solutions, suspensions, and powders. ons and suspensions can
be stered by atomizers, nebulizers, and vaporizes aerosol s; and
powders can be administered by insufflators or puffers. Pharmaceutically
acceptable carriers and excipients suitable for use in the inhalation
formulations disclosed herein include, but are not limited to, preservatives,
buffer salts, viscosity modifying agents, suspending agents, pH—adjusting
agents, tonicity adjusting agent, solvent, co-solvent, surfactant and flavours.
The pressurized dispersers of the invention can be in form of a unit dose, bi-
dose or multi—dose devices. The pressurized dispersers defined further
comprise at least one propellant agent. The propellant is the agent that
supplies the necessary pressure within the aerosol, nebulizer or insufflator
system to expel the material from the container. Propellants are commonly
classified as liquefied or compressed gases having vapour pressures
generally exceeding atmospheric pressure. Examples of suitable propellants
for the present invention includes hydrocarbons, especially halogenated
derivatives of methane, ethane, and propane, low molecular weight
hydrocarbons such as the s and pentanes, and compressed gases
such as carbon dioxide, nitrogen, and nitrous oxide. Mixtures of propellants
are frequently used to obtain desirable pressure, delivery, and spray
characteristics.
In another embodiment, the compound for use of the present invention is in
form of topical unit dosage form to be applied to the skin or mucous
membranes of a patient to be treated. Examples of topical dosage forms
suitable for the present ion include transdermal patches, transdermal
rs, solutions, aerosols and non-aerosol sprays, creams, powders,
lotions, gels, ointments, pastes, ons, pens or sticks. ceutically
acceptable carriers and excipients suitable for use in the topical formulations
disclosed herein include, but are not limited to, an emollient, a thickener, a
humectant, a pH-regulating agent, an antioxidant, a preservative agent,
solubility ers, isotonic agents, suspending and dispersing agents,
wetting or fying agents, flavours and , thickening agents, and
vehicles or their mixtures.
Throughout the description and claims the term "comprise" and variations of
the word, are not intended to e other technical es, additives,
components, or steps. The term includes the expression “consist of’ and
variations thereof. Additional objects, advantages and features of the invention
will become apparent to those skilled in the art upon examination of the
description or may be learned by practice of the invention. The following
examples are provided by way of illustration, and they are not intended to be
limiting of the present ion. Furthermore, the present invention covers all
possible combinations of particular and preferred embodiments described
herein.
EXAMPLES
Example 1. VMAT2 Assay
VMAT2 Functional Assay determines the interaction between the compounds
of the present invention and the VMAT2 present in isolated cerebral cortical
vesicles. The VMAT2 assay used in the t invention is the assay
disclosed by Sandoval et al in 2002 (Sandoval et al; “Methylphenidate
redistributes vesicular monoamine transporter-2: role of dopamine receptors".
l of Neuroscience. 2002, Vol. 22, pp. 8705-8710).
A. Materials
Transporter Source: Rat cortical vesicles
s: 100 mM potassium tartrate, 1.7 mM ascorbic acid, 0.05 mM EGTA,
0.1 mM EDTA, 2 mM Magnesium-ATP and 25 mM HEPES.
RadioLigand: Monoamine: [3H]-Dopamine
Final ligand tration: 30 nM
KT (transport constant kinetic parameter of dopamine): 140 nM
Vmax (transport rate): 1800 fmoi/mg tissue/min
B. s
Positive reference-control: Reserpine
Concentration: 10 pM
Comparative sample: Tetrabenazine
Test Samples: (IA) Bevantolol
(IB) Cinacalcet
(IC) Phenoxybenzamine
C. Method
(1) Rat cortical vesicles were purified using differential centrifugation, and the
vesicles obtained were diluted in the assay buffer and cubated with the
positive-reference-control, the comparative sample or a compound of the
invention for 30 minutes at room temperature.
(2) Uptake begins with the addition of [3H]-dopamine and the mixture is
allowed to incubate for 15 minutes at room temperature.
(3) After that time, the reaction was stopped by vacuum tion, and the
amount of ctivity of the radiolabeled [3H]-dopamine trapped onto the
filters was determined.
(4) The radioactivity of the [3H]-dopamine trapped was determined using liquid
scintillation spectrophotometry an and Perkin Elmer). The amount of
radioactivity obtained with the comparative sample or a compound of the
invention was compared with the amount of radioactivity obtained with the
positive-reference control (reserpine).
D. s
The half maximal inhibitory concentration (IC50) of the comparative sample
and compounds of the invention was determined by measuring the
concentration of competing ligand which displaced 50% of the specific binding
of the [3H]-dopamine. The IC50 value is converted to an absolute inhibition
constant K using the Cheng-Prusoff on. Two separate independent
experiments were performed.
The IC50 values were summarized in Table 1:
Table 1
IC50 (nM)
COMPOUND mm
Comparative Sample
5I 36.7
(tetrabenazine)
Bevantolol (IA)
Cinacalcet (IB) ——
PhenoxybenzamineuC)——
The IC50 values on Table 1 show that the compounds of the ion t
VMAT2 in the same order of magnitude than the comparative sample
(tetrabenazine). The above—mentioned values of lC50 in the VMAT2 inhibition
assay are good indicators of the efficacy of the treatment of hyperkinetic
movement disorders by the compounds of the present ion.
REFERENCES CITED IN THE APPLICATION
1. W02012117073
2. Sandoval et al; “Methylphenidate redistributes vesicular monoamine
transporter-2: role of dopamine ors". Journal of Neuroscience. 2002,
Vol. 22, pp. 8705-8710.
Claims (19)
1. Use of a compound of formula (IA) or a pharmaceutically acceptable salt thereof in the manufacture of a medicament for the prophylaxis and/or treatment of a hyperkinetic movement disorder associated with Huntington's e, Wilson's disease, Tourette syndrome, restless leg syndrome, and e dyskinesia in a subject in need thereof.
2. The use of claim 1, wherein the compound of formula (IA) is to be administered as a single active ingredient.
3. The use of claim 1 or 2, wherein the compound of a (IA) is to be administered in a combination therapy with an onal therapeutic agent.
4. The use of claim 3, wherein the additional therapeutic agent is selected from the group consisting of a compound of formula (IB), a compound of formula (IC), a neuroleptic agent, an anti-glutamatergic agent, a dopamine ing agent, an acetyl cholinesterase inhibitor, and mixture thereof; wherein: the compound of formula (IB) is and the nd of formula (IC) is
5. The use of claim 3 or 4, wherein the compound of formula (IA) and the additional therapeutic agent are to be administered to a subject simultaneously, sequentially or separately.
6. The use of any one of claims 3 to 5, wherein the additional eutic agent is selected from the group consisting of a compound of formula (IB), a compound of formula (IC), amantadine, riluzole, tetrabenazine, reserpine, and donepezil.
7. The use of any one of claims 1 to 6, wherein the hyperkinetic movement disorder is selected from the group consisting of abdominal dyskinesias, akathisic movements, asynergia, ataxia, athetosis, ballism, chorea, dysmetria, dystonia, hemifacial spasm, hyperekplexia, hypnogenic dyskinesias, jumpy stumps, moving toes and/or fingers, myoclonus, myokymia, myorhythmia, paroxysmal dyskinesias, tics, and s.
8. The use of any one of claims 1 to 7, wherein the hyperkinetic movement disorder is chorea associated to Huntington's disease, Tourette syndrome, and e dyskinesia.
9. The use of any one of claims 1 to 8, wherein the hyperkinetic movement er is chorea associated to Huntington's disease.
10. The use of any one of claims 1 to 7, wherein the hyperkinetic movement disorder is tics ated to Tourette syndrome and tardive dyskinesia.
11. The use of any one of claims 1 to 7, wherein the inetic movement er is ballism.
12. The use of any one of claims 1 to 7, wherein the hyperkinetic movement disorder is dystonia.
13. The use of any one of claims 1 to 12, wherein the composition comprises an effective amount of the compound of formula (IA) or a pharmaceutically able salt thereof, in combination with pharmaceutically acceptable excipients or carriers.
14. The use of claim 13, wherein the ceutical composition is in a dosage form selected from a group consisting of an oral unit dosage form, intraoral unit dosage form, inhalation dosage form, and l unit dosage form.
15. The use of any one of claims 3 to 6, wherein the hyperkinetic movement disorder is chorea associated to Huntington's e, Tourette syndrome, and tardive dyskinesia.
16. The use of any one of claims 3 to 6, wherein the hyperkinetic movement er is chorea associated to Huntington's disease.
17. The use of any one of claims 3 to 6, wherein the composition comprises an effective amount of the compound of formula (IA) or a pharmaceutically acceptable salt thereof, in ation with pharmaceutically acceptable excipients or carriers.
18. The use of claim 17, wherein the ceutical composition is in a dosage form selected from a group consisting of an oral unit dosage form, intraoral unit dosage form, inhalation dosage form, and topical unit dosage form.
19. Use according to claim 1, substantially as herein described with reference to any one of the Examples thereof.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13382230 | 2013-06-19 | ||
EP13382230.4 | 2013-06-19 | ||
PCT/EP2014/062786 WO2014202646A1 (en) | 2013-06-19 | 2014-06-18 | Therapeutic agents for use in the prophylaxis and/or treatment of hyperkinetic movement disorders |
Publications (2)
Publication Number | Publication Date |
---|---|
NZ715951A NZ715951A (en) | 2021-03-26 |
NZ715951B2 true NZ715951B2 (en) | 2021-06-29 |
Family
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