BR102012026555B1 - PROCESS FOR OBTAINING AND COMPOSING A DRUG FROM CHENODEOXYCOLATE BOUND TO A NATURAL SULFAMATE MONOSACCHARIDE DERIVATIVE D-FRUCTOSE (TOPIRAMATE) AND TO A PHENYLKETONE (BUPROPRION) FOR THE TREATMENT OF OBESITY AND PLURIMETABOLIC SYNDROMES - Google Patents
PROCESS FOR OBTAINING AND COMPOSING A DRUG FROM CHENODEOXYCOLATE BOUND TO A NATURAL SULFAMATE MONOSACCHARIDE DERIVATIVE D-FRUCTOSE (TOPIRAMATE) AND TO A PHENYLKETONE (BUPROPRION) FOR THE TREATMENT OF OBESITY AND PLURIMETABOLIC SYNDROMES Download PDFInfo
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- BR102012026555B1 BR102012026555B1 BR102012026555-9A BR102012026555A BR102012026555B1 BR 102012026555 B1 BR102012026555 B1 BR 102012026555B1 BR 102012026555 A BR102012026555 A BR 102012026555A BR 102012026555 B1 BR102012026555 B1 BR 102012026555B1
- Authority
- BR
- Brazil
- Prior art keywords
- bis
- chenodeoxycholate
- oxy
- oxopropan
- chlorophenyl
- Prior art date
Links
- 229940079593 drug Drugs 0.000 title claims abstract description 29
- 239000003814 drug Substances 0.000 title claims abstract description 29
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- KJADKKWYZYXHBB-XBWDGYHZSA-N Topiramic acid Chemical compound C1O[C@@]2(COS(N)(=O)=O)OC(C)(C)O[C@H]2[C@@H]2OC(C)(C)O[C@@H]21 KJADKKWYZYXHBB-XBWDGYHZSA-N 0.000 title claims abstract description 10
- 229960004394 topiramate Drugs 0.000 title claims abstract description 9
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 title claims 2
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- BJHIKXHVCXFQLS-UYFOZJQFSA-N keto-D-fructose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)C(=O)CO BJHIKXHVCXFQLS-UYFOZJQFSA-N 0.000 title description 5
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- 239000000203 mixture Substances 0.000 claims abstract description 19
- -1 D-FRUCTOSE MONOSACCHARIDE SULFAMATE DERIVATIVE Chemical class 0.000 claims abstract description 17
- SNPPWIUOZRMYNY-UHFFFAOYSA-N bupropion Chemical compound CC(C)(C)NC(C)C(=O)C1=CC=CC(Cl)=C1 SNPPWIUOZRMYNY-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229960001058 bupropion Drugs 0.000 claims abstract description 7
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 48
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 36
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 34
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 33
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 239000000243 solution Substances 0.000 claims description 31
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 claims description 24
- 125000003368 amide group Chemical group 0.000 claims description 22
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 21
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 20
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Natural products O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 19
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 18
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 18
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 18
- WDJHALXBUFZDSR-UHFFFAOYSA-N acetoacetic acid Chemical compound CC(=O)CC(O)=O WDJHALXBUFZDSR-UHFFFAOYSA-N 0.000 claims description 18
- FIYXUOWXHWJDAM-UHFFFAOYSA-N methyl sulfamate Chemical compound COS(N)(=O)=O FIYXUOWXHWJDAM-UHFFFAOYSA-N 0.000 claims description 18
- CTSLXHKWHWQRSH-UHFFFAOYSA-N oxalyl chloride Chemical compound ClC(=O)C(Cl)=O CTSLXHKWHWQRSH-UHFFFAOYSA-N 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 17
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 14
- 235000019439 ethyl acetate Nutrition 0.000 claims description 14
- 229940009025 chenodeoxycholate Drugs 0.000 claims description 12
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 12
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 10
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 10
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- RUDATBOHQWOJDD-BSWAIDMHSA-N chenodeoxycholic acid Chemical compound C([C@H]1C[C@H]2O)[C@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@@H](CCC(O)=O)C)[C@@]2(C)CC1 RUDATBOHQWOJDD-BSWAIDMHSA-N 0.000 claims description 10
- 239000000047 product Substances 0.000 claims description 10
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- 239000012267 brine Substances 0.000 claims description 7
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- 229960001091 chenodeoxycholic acid Drugs 0.000 claims description 6
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- 239000003054 catalyst Substances 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 5
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 5
- QIBWNGWEFYSLCM-UHFFFAOYSA-N benzyl 3-aminopropanoate;hydrochloride Chemical compound Cl.NCCC(=O)OCC1=CC=CC=C1 QIBWNGWEFYSLCM-UHFFFAOYSA-N 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims description 4
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- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 4
- KWSFUOJNSBLDOW-UHFFFAOYSA-N 2-(carboxymethoxycarbonyloxy)acetic acid Chemical compound OC(=O)COC(=O)OCC(O)=O KWSFUOJNSBLDOW-UHFFFAOYSA-N 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical group [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 3
- CLZISMQKJZCZDN-UHFFFAOYSA-N [benzotriazol-1-yloxy(dimethylamino)methylidene]-dimethylazanium Chemical compound C1=CC=C2N(OC(N(C)C)=[N+](C)C)N=NC2=C1 CLZISMQKJZCZDN-UHFFFAOYSA-N 0.000 claims description 3
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
- A61K31/575—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids substituted in position 17 beta by a chain of three or more carbon atoms, e.g. cholane, cholestane, ergosterol, sitosterol
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/04—Anorexiants; Antiobesity agents
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J41/00—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring
- C07J41/0033—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring not covered by C07J41/0005
- C07J41/0055—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring not covered by C07J41/0005 the 17-beta position being substituted by an uninterrupted chain of at least three carbon atoms which may or may not be branched, e.g. cholane or cholestane derivatives, optionally cyclised, e.g. 17-beta-phenyl or 17-beta-furyl derivatives
- C07J41/0061—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring not covered by C07J41/0005 the 17-beta position being substituted by an uninterrupted chain of at least three carbon atoms which may or may not be branched, e.g. cholane or cholestane derivatives, optionally cyclised, e.g. 17-beta-phenyl or 17-beta-furyl derivatives one of the carbon atoms being part of an amide group
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
PROCESSO DE OBTENÇÃO E COMPOSIÇÃO DE FÁRMACO PROVENIENTE DO QUENODEOXICOLATO LIGADO A UM DERIVADO DE SULFAMATO MONOSSACARÍDEO NATURAL D-FRUTOSE (TOPIRAMATO) E A UMA FENILCETONA (BUPROPRIONA) PARA TRATAMENTO DA OBESIDADE E DAS SÍNDROMES PLURIMETABÓLICAS consiste essencialmente de uma nova entidade química, a qual possui um receptor específico na membrana biológica, permitindo melhor absorção devido ao seu transporte ativo, sendo que depois de hidrolisada esta molécula libera a bupropina e o topiramato, que já demonstraram isoladamente eficácia no tratamento da obesidade e das síndromes plurimetabólicas. A bupropiona é uma aminocetona, que possui como mecanismo de ação uma leve inibição de recaptação de norepinefrina, serotonina e dopamina, que demonstrou promover a perda de peso em diversos estudos, com baixa incidência de eventos adversos. O topiramato é um sulfamato substituído análogo da frutose 1,6-difosfato que induz a perda de peso, sendo que estudos em humanos sugerem que ele desempenhe um papel na diminuição da ingestão de calorias, no envolvimento hormonal da obesidade e no metabolismo da glicose e lipídios. Uma nova entidade química com a associação das moléculas destes dois fármacos permite um efeito sinérgico, já que cada parte irá atuar sobre determinado sistema fisiológico para redução do peso corporal em pacientes com (...).PROCESS FOR OBTAINING AND COMPOSITION OF A DRUG FROM CHENODEOXICOLATE LINKED TO A NATURAL D-FRUCTOSE MONOSACCHARIDE SULFAMATE DERIVATIVE (TOPYRAMATE) AND A PHENYLKETONE (BUPROPRION) FOR THE TREATMENT OF OBESITY AND PLURIMETABOLIC SYNDROMES essentially consists of a new chemical entity, which has a specific receptor in the biological membrane, allowing better absorption due to its active transport, and after being hydrolyzed, this molecule releases bupropyn and topiramate, which have already demonstrated efficacy in the treatment of obesity and plurimetabolic syndromes. Bupropion is an aminoketone, which has a mild inhibition of norepinephrine, serotonin and dopamine reuptake as a mechanism of action, which has been shown to promote weight loss in several studies, with a low incidence of adverse events. Topiramate is a substituted sulfamate fructose 1,6-diphosphate analogue that induces weight loss, with human studies suggesting that it plays a role in decreasing calorie intake, hormonal involvement in obesity, and glucose and glucose metabolism. lipids. A new chemical entity with the association of the molecules of these two drugs allows a synergistic effect, since each part will act on a certain physiological system to reduce body weight in patients with (...).
Description
Trata a presente solicitação de Patente de Invenção de um “PROCESSO DE OBTENÇÃO E COMPOSIÇÃO DE FÁRMACO PROVENIENTE DO QUENODEOXICOLATO LIGADO A UM DERIVADO DE SULFAMATO MONOSSACARÍDEO NATURAL D-FRUTOSE (TOPIRAMATO) E A UMA FENILCETONA (BUPROPRIONA) PARA TRATAMENTO DA OBESIDADE E DAS SÍNDROMES PLURIMETABÓLICAS”, cuja composição foi idealizada através de uma nova entidade farmacêutica oriunda do quenodeoxicolato ligado a um derivado de sulfamato monossubstituído do monossacarídeo natural d-frutose (topiramato) e a uma fenilcetona (bupropiona) para tratamento da obesidade e das síndromes plurimetabólicas, com a vantagem do organismo possuir um receptor de membrana específico para este ácido graxo, aumentando a absorção deste composto.This patent application deals with a “PROCESS FOR OBTAINING AND COMPOSITION OF A DRUG FROM CHENODEOXICOLATE ATTACHED TO A NATURAL MONOSACCHARIDE SULFAMATE DERIVATIVE D-FRUCTOSE (TOPYRAMATE) AND A PHENYLKETONE (BUPROPRION) FOR THE TREATMENT OF OBESITY AND PLURIMETABOLIC SYNDROMES ”, whose composition was idealized through a new pharmaceutical entity derived from chenodeoxycholate linked to a monosubstituted sulfamate derivative of the natural monosaccharide d-fructose (topiramate) and a phenylketone (bupropion) for the treatment of obesity and plurimetabolic syndromes, with the advantage the body has a specific membrane receptor for this fatty acid, increasing the absorption of this compound.
O peso corporal é homeostaticamente regulado para preservar o peso atual de um indivíduo. Quando o peso corporal se desvia desse nível, diversos mecanismos regulatórios são ativados para restaurar o peso aos níveis prévios. Logo, estabelecer como alvo uma determinada via molecular pode levar à perda de peso, mas respostas homeostáticas compensatórias serão ativadas, minimizando a eficácia do medicamento. Os tratamentos de algumas doenças como a hipertensão arterial sistêmica e o diabetes tipo II, possuem fármacos associados, no qual seria utilizado um único medicamento. Logo, temos uma nova proposta terapêutica que teria a ação por dois mecanismos diferentes, na tentativa de maximizar o efeito desejado e, simultaneamente, diminuir a incidência de eventos adversos.Body weight is homeostatically regulated to preserve an individual's current weight. When body weight deviates from this level, several regulatory mechanisms are activated to restore weight to previous levels. Therefore, targeting a particular molecular pathway may lead to weight loss, but compensatory homeostatic responses will be activated, minimizing the effectiveness of the drug. The treatments of some diseases, such as systemic arterial hypertension and type II diabetes, have associated drugs, in which a single drug would be used. Therefore, we have a new therapeutic proposal that would act through two different mechanisms, in an attempt to maximize the desired effect and, simultaneously, reduce the incidence of adverse events.
A invenção é particularmente apropriada para a necessidade humana, trata-se especificamente de um fármaco direcionado ao tratamento da obesidade e das doenças plurimetabólicas.The invention is particularly suited to the human need, it is specifically a drug aimed at the treatment of obesity and plurimetabolic diseases.
É sabido, que a obesidade no mundo tem sido algo alarmante e preocupante, devido ao aumento considerável de adultos e crianças que se enquadram no grupo de obesos nas últimas décadas. Diante desta situação, o aumento exponencial dos casos de pacientes que se submetem à cirurgia bariátrica, vem refletindo um esforço maior dos médicos na tentativa de reverter potenciais complicações associadas às doenças da obesidade e, ao mesmo tempo, expondo a pequena gama de opções farmacológicas disponíveis para o tratamento clínico.It is known that obesity in the world has been something alarming and worrying, due to the considerable increase in adults and children who fall into the obese group in recent decades. Faced with this situation, the exponential increase in cases of patients undergoing bariatric surgery has been reflecting a greater effort by physicians in an attempt to reverse potential complications associated with obesity diseases and, at the same time, exposing the small range of pharmacological options available for clinical treatment.
Hoje, no Brasil, temos duas opções de fármacos aprovados pela ANVISA para tratamento da obesidade que é a Sibutramina e o Orlistate, onde o segundo é um fármaco com pequena eficácia na redução de peso, mas tem a vantagem de ser isento de eventos adversos no sistema cardiovascular, podendo ser usado com segurança na população obesa e inclusive prevenir o diabetes, conforme estudo Xendos, enquanto o primeiro fármaco citado, a sibutramina, com um maior número de estudos realizados, é um dos medicamentos mais prescritos, pois além do bom resultado, oferece um perfil favorável de segurança aos seus usuários. Mas recentemente estudos que reportavam dados do Estudo SCOUT, objetivava avaliar se a medicação era capaz de reduzir eventos cardiovasculares em uma população obesa de alto risco como pacientes com diabetes tipo 2, pacientes com histórico de evento cardiovascular prévio e pacientes com outro fator de risco, no qual concluiu-se que houve um aumento discreto, porém significativo, desses desfechos no grupo de pacientes recebendo a sibutramina (11,4% VS. 10%), o que motivou a suspensão da venda deste fármaco na Europa e EUA. Aqui no Brasil a ANVISA optou por não suspendê-lo, mas emitiu um parecer restringindo o uso deste e proibindo o uso de anfepramona, fenproporex e mazindol, por trazer um alto risco cardiovascular advindo dos efeitos noradrenérgicos destes fármacos.Today, in Brazil, we have two drug options approved by ANVISA for the treatment of obesity, Sibutramine and Orlistat, where the second is a drug with little effectiveness in weight reduction, but has the advantage of being free of adverse events in the cardiovascular system, and can be used safely in the obese population and even prevent diabetes, according to the Xendos study, while the first drug mentioned, sibutramine, with a greater number of studies carried out, is one of the most prescribed drugs, because in addition to the good result , offers a favorable security profile to its users. But recently studies reporting data from the SCOUT Study, aimed to assess whether the medication was able to reduce cardiovascular events in a high-risk obese population such as patients with type 2 diabetes, patients with a history of previous cardiovascular event and patients with another risk factor, in which it was concluded that there was a slight but significant increase in these outcomes in the group of patients receiving sibutramine (11.4% vs. 10%), which led to the suspension of the sale of this drug in Europe and the USA. Here in Brazil, ANVISA chose not to suspend it, but issued an opinion restricting its use and prohibiting the use of amfepramone, fenproporex and mazindol, for bringing a high cardiovascular risk arising from the noradrenergic effects of these drugs.
São conhecidos do Estado da Técnica, o documento WO 01/00205 A1 prioridade de 24/06/1999, que consiste de um método para tratamento de condições comórbidas associadas com a obesidade num ser humano em necessidade de tal tratamento que compreende a administração ao ser humano de uma quantidade terapeuticamente eficaz de um composto de fórmula, incluindo enantiômeros e os seus sais farmaceuticamente aceitáveis, em que R1 e R2 são independentemente H ou metil, e uma quantidade terapeuticamente eficaz de um composto de fórmula (II) são administrados simultaneamente, separadamente ou sequencialmente.The State of the Art is known from document WO 01/00205 A1 priority of 24/06/1999, which consists of a method for treating comorbid conditions associated with obesity in a human being in need of such treatment which comprises administering to the being human dose of a therapeutically effective amount of a compound of formula, including enantiomers and their pharmaceutically acceptable salts, wherein R1 and R2 are independently H or methyl, and a therapeutically effective amount of a compound of formula (II) are administered simultaneously, separately or sequentially.
Outro produto conhecido do estado da técnica é o documento EP 1 964 555 A1 prioridade de 20/12/2005, a invenção relaciona-se com a indústria farmacêutica, em geral, envolvida na produção de medicamentos para controlar a obesidade e excesso de peso. Mais especificamente, a invenção refere-se a uma composição que contém uma substância que inibe a recaptação de dopamina, noradrenalina e serotonina e um aminoácido. A composição é caracterizada pelo fato da combinação ou associação acima referida ser constituída por uma substância selecionada que inibe a recaptação de dopamina, noradrenalina e serotonina, conhecida como sibutramina, e um aminoácido conhecido como carnitina, a fim de produzir um produto que tem um efeito sinérgico para o tratamento da obesidade e excesso de peso, com menos efeitos colaterais.Another known product from the state of the art is the priority document EP 1 964 555 A1 of 20/12/2005, the invention relates to the pharmaceutical industry, in general, involved in the production of drugs to control obesity and overweight. More specifically, the invention relates to a composition that contains a substance that inhibits the reuptake of dopamine, noradrenaline and serotonin and an amino acid. The composition is characterized by the fact that the aforementioned combination or association is constituted by a selected substance that inhibits the reuptake of dopamine, noradrenaline and serotonin, known as sibutramine, and an amino acid known as carnitine, in order to produce a product that has an effect synergistic for the treatment of obesity and overweight, with fewer side effects.
O uso dos medicamentos acima para perda de peso é efetivo em longo prazo, mas, após um ano de tratamento, tais fármacos aprovados por órgãos reguladores geram uma perda de peso em média de 3 a 5 kg devido aos efeitos fisiológicos da crença do paciente de que está a ser tratado. Logo, se compararmos a eficácia discreta destes fármacos com a perda de peso de pacientes submetidos à cirurgia bariátrica, que vai de 20% a 25% dependendo do procedimento adotado, resultando em uma redução significativa das doenças associadas à obesidade e a um aumento na expectativa de vida, faz-se necessário e de suma importância o desenvolvimento de novas medicações que sejam mais eficazes, associadas a um perfil de segurança favorável, com um mínimo de eventos adversos.The use of the above drugs for weight loss is effective in the long term, but after one year of treatment, such drugs approved by regulatory bodies lead to an average weight loss of 3 to 5 kg due to the physiological effects of the patient's belief that that is being treated. Therefore, if we compare the discreet effectiveness of these drugs with the weight loss of patients undergoing bariatric surgery, which ranges from 20% to 25% depending on the procedure adopted, resulting in a significant reduction in diseases associated with obesity and an increase in expectation of life, it is necessary and extremely important to develop new medications that are more effective, associated with a favorable safety profile, with a minimum of adverse events.
Com a proibição da anfepramona, fenproporex e mazindol, que vinham sendo os pilares do tratamento farmacológico da obesidade por décadas, mas sem uma segurança admissível, deixando milhares de pessoas em todo o mundo, principalmente no Brasil, sem opção terapêutica, levando o campo do tratamento farmacológico da obesidade a passar por um momento turbulento, o que torna-se imperioso que se intensifiquem as pesquisas de novos fármacos e associações de drogas com diferentes propostas e mecanismos de ação, visando um tratamento adequado a população crescente de obesos.With the prohibition of amfepramone, fenproporex and mazindol, which had been the pillars of the pharmacological treatment of obesity for decades, but without admissible safety, leaving thousands of people all over the world, mainly in Brazil, without a therapeutic option, leading the field of pharmacological treatment of obesity is going through a turbulent time, which makes it imperative that research on new drugs and drug combinations with different proposals and mechanisms of action be intensified, aiming at adequate treatment for the growing population of obese people.
O “PROCESSO DE OBTENÇÃO E COMPOSIÇÃO DE FÁRMACO PROVENIENTE DO QUENODEOXICOLATO LIGADO A UM DERIVADO DE SULFAMATO MONOSSACARÍDEO NATURAL D-FRUTOSE (TOPIRAMATO) E A UMA FENILCETONA (BUPROPRIONA) PARA TRATAMENTO DA OBESIDADE E DAS SÍNDROMES PLURIMETABÓLICAS”, objeto desta solicitação de Patente de Invenção, possui características próprias em sua composição, contemplando uma nova entidade química denominada 3a, 7a-bis(4-(terc-butil(1-(4-clorofenil)-1- oxopropan-2-il)amido)bis(oxometileno)bis(oxi) ácido diacetico)-quenodeoxicolato-β- alanil- ((3aS, 5aR, 8aR, 8bS)-2,2,7,7-tetrametiltetrahidro-3aHbis[ 1,3]dioxolo[4,5- b:4',5'-d]piran-3a-il) metil sulfamato que é proveniente do quenodeoxicolato ligado a um derivado de sulfato monossubstituído do monossacarídeo natural d-frutose (topiramato) e a uma fenilcetona (bupropiona) para tratamento da obesidade e das síndromes plurimetabólicas, com a vantagem do organismo possuir um receptor de membrana específico para este ácido graxo, aumentando a absorção deste composto.THE “PROCESS FOR OBTAINING AND COMPOSITION OF A DRUG FROM CHENODEOXICOLATE ATTACHED TO A NATURAL D-FRUCTOSE MONOSACCHARIDE SULFAMATE DERIVATIVE (TOPYRAMATE) AND A PHENYLKETONE (BUPROPRION) FOR THE TREATMENT OF OBESITY AND PLURIMETABOLIC SYNDROMES”, object of this request for Patent of Invention , has its own characteristics in its composition, contemplating a new chemical entity called 3a, 7a-bis(4-(tert-butyl(1-(4-chlorophenyl)-1-oxopropan-2-yl)amido)bis(oxomethylene)bis (oxy)diacetic acid)-chenodeoxycholate-β-alanyl-((3aS, 5aR, 8aR, 8bS)-2,2,7,7-tetramethyltetrahydro-3aHbis[ 1,3]dioxolo[4,5- b:4' ,5'-d]pyran-3a-yl) methyl sulfamate which comes from chenodeoxycholate linked to a monosubstituted sulfate derivative of the natural monosaccharide d-fructose (topiramate) and to a phenylketone (bupropion) for the treatment of obesity and plurimetabolic syndromes , with the advantage that the organism has a specific membrane receptor for this fatty acid, increasing the abs sorption of this compound.
O peso corporal é homeostaticamente regulado para preservar o peso atual de um indivíduo. Quando o peso corporal se desvia desse nível, diversos mecanismos regulatórios são ativados para restaurar o peso aos níveis prévios. Logo, estabelecer como alvo uma determinada via molecular pode levar à perda de peso, mas respostas homeostáticas compensatórias serão ativadas, minimizando a eficácia do fármaco. Em analogia com o tratamento de outras doenças, como a hipertensão arterial sistêmica (que utiliza a associação de um inibidor da ECA com um tiazídico) e do diabetes tipo 2 (que utiliza a associação de metformina com sulfoniluréia), seria utilizado um único fármaco (nova entidade química) que teria ação por dois mecanismos diferentes, na tentativa de maximizar o efeito desejado e, simultaneamente, diminuir a incidência de eventos adversos.Body weight is homeostatically regulated to preserve an individual's current weight. When body weight deviates from this level, several regulatory mechanisms are activated to restore weight to previous levels. Therefore, targeting a particular molecular pathway may lead to weight loss, but compensatory homeostatic responses will be activated, minimizing the drug's effectiveness. In analogy with the treatment of other diseases, such as systemic arterial hypertension (which uses the combination of an ACE inhibitor and a thiazide) and type 2 diabetes (which uses the combination of metformin and sulfonylurea), a single drug would be used ( new chemical entity) that would act through two different mechanisms, in an attempt to maximize the desired effect and, simultaneously, reduce the incidence of adverse events.
A presente invenção possui, além de todo o exposto anteriormente, uma nova entidade química, a qual possui um receptor específico na membrana biológica, permitindo melhor absorção devido ao seu transporte ativo, sendo que depois de hidrolisada esta molécula libera a bupropiona e o topiramato, que já demonstraram isoladamente eficácia no tratamento da obesidade e das síndromes plurimetabólicas.The present invention has, in addition to all of the above, a new chemical entity, which has a specific receptor on the biological membrane, allowing better absorption due to its active transport, and after being hydrolyzed, this molecule releases bupropion and topiramate, which have already demonstrated efficacy in the treatment of obesity and plurimetabolic syndromes.
A bupropiona é uma aminocetona, que possui como mecanismo de ação uma leve inibição da recaptação de norepinefrina, serotonina e dopamina, que demonstrou promover a perda de peso em diversos estudos, com baixa incidência de eventos adversos.Bupropion is an aminoketone, which has as a mechanism of action a slight inhibition of the reuptake of norepinephrine, serotonin and dopamine, which has been shown to promote weight loss in several studies, with a low incidence of adverse events.
O topiramato é um sulfamato substituído análogo da frutose 1,6- difosfato que induz a perda de peso, sendo que estudos em humanos sugerem que ele desempenhe um papel na diminuição da ingestão de calorias, no envolvimento hormonal da obesidade e no metabolismo da glicose e lipídios.Topiramate is a substituted sulfamate analogue of fructose 1,6-diphosphate that induces weight loss, with human studies suggesting that it plays a role in decreased calorie intake, hormonal involvement in obesity, and in glucose metabolism and lipids.
Uma nova entidade química com a associação das moléculas destes dois fármacos permite um efeito sinérgico, já que cada parte irá atuar sobre determinado sistema fisiológico para redução do peso corporal em pacientes com sobrepeso ou obesidade.A new chemical entity with the association of the molecules of these two drugs allows a synergistic effect, since each part will act on a certain physiological system to reduce body weight in overweight or obese patients.
PROVENIENTE DO QUENODEOXICOLATO LIGADO A UM DERIVADO DE SULFAMATO MONOSSACARÍDEO NATURAL D-FRUTOSE (TOPIRAMATO) E A UMA FENILCETONA (BUPROPRIONA) PARA TRATAMENTO DA OBESIDADE E 10 DAS SÍNDROMES PLURIMETABÓLICAS”, objeto desta solicitação de patente de invenção, consiste de um fármaco derivado do quenodeoxicolato ligado a uma fenilcetona (bupropiona) e a um derivado do monossacarídeo natural d-frutose (topiramato) que resulta em uma nova entidade química denominada 3a, 7a-bis(4- (terc-butil(1-(4-clorofenil)-1-oxopropan-2-il)amido)bis(oxometileno)bis(oxi) ácido 15 diacdtico)-quenodeoxicolato-β-alanil- ((3aS, 5aR, 8aR, 8bS)-2,2,7,7- tetrametiltetrahidro-3aHbis[1,3]dioxolo[4,5-b:45 '-d] piran-3a-il) metil sulfa mato. Fórmula Molecular: C71H99N4CI2O20S. Para síntese do fármaco são necessários os compostos a seguir, definidos qualitativamente e quantitativamente, conforme demonstrado abaixo, podendo ocorrer alteração das quantidades, de acordo com a necessidade de produção do fármaco, sendo os componentes apresentados em gramas, mmoles e equivalente-grama, segundo os parâmetros elencados na composição:FROM KENODEOXYCHOLATE ATTACHED TO A NATURAL D-FRUCTOSE MONOSACCHARIDE SULFAMATE DERIVATIVE (TOPYRAMATE) AND TO A PHENYLKETONE (BUPROPRION) FOR THE TREATMENT OF OBESITY AND 10 OF THE PLURIMETABOLIC SYNDROMES", object of this patent application, consists of a drug derived from chenodeoxycholate linked to a phenylketone (bupropion) and a derivative of the natural monosaccharide d-fructose (topiramate) which results in a new chemical entity called 3a, 7a-bis(4-(tert-butyl(1-(4-chlorophenyl)-1 -oxopropan-2-yl)amido)bis(oxomethylene)bis(oxy)diacdic acid)-chenodeoxycholate-β-alanyl-((3aS, 5aR, 8aR, 8bS)-2,2,7,7-tetramethyltetrahydro-3aHbis [1,3]dioxolo[4,5-b:45'-d]pyran-3a-yl) methyl sulfamate. Molecular Formula: C71H99N4CI2O20S. For the synthesis of the drug, the following compounds are required, defined qualitatively and quantitatively, as shown below, with the possibility of changing the amounts, according to the need for drug production, with the components presented in grams, mmoles and gram-equivalent, according to the parameters listed in the composition:
Quantidade Substância g Ácido quenodeoxicólico 1,05 eq 2-(1 H-benzotriazol-1 -il)-1,1,3,3-tetrametil uronio hexafluorofosfato (HBTU) 1,05 eq cloridrato de β-alanina-benzil éster 2,1 eq di-isopropil-etilamina (DIPEA) 100 mL dimetil formamida anidra (DMF) 90 mL éter 180 mL solução de bicarbonato de sódio (2,5% peso/volume) 90 mL ácido clorídrico (HCI) 0,1N 90 mL salmoura (água saturada com sal) 50 mL THF anidro 7,3 eq 2-(clorocarbonil oxi)- ácido acético 8 mL piridina seca 50 mL clorofórmio 150 mL hidróxido de sódio (NaOH) 37% ácido clorídrico 140 mL acetato de etila (EtOAc) 20 mL diclorometano anidro (DCM) 10 eq solução de cloreto de oxalila (OxCI) Qsp* Tetrahidrofurano (THF) anidro 2,1 eq (BUP) 50 mL acetato de etila Qsp* Acetona Qsp* Tolueno 25 mL metanol 0,3% ácido acético 30 mL DMF anidro 1,05 eq HBTU 1,05 eq DIPEA 1,05 eq ((3aS,5aR,8aR,8bS)-2,2,7,7-tetrametiltetrahidro-3aH- bis[1,3]dioxolo[4,5-b:4’,5’-d]piran-3a-il) metil sulfamato (TOP) *qsp = quantidade suficiente para padronizar (completar) o volume da fórmula.Quantity Substance g Chenodeoxycholic acid 1.05 eq 2-(1H-benzotriazol-1-yl)-1,1,3,3-tetramethyl uronium hexafluorophosphate (HBTU) 1.05 eq β-alanine benzyl ester hydrochloride 2, 1 eq diisopropylethylamine (DIPEA) 100 mL anhydrous dimethyl formamide (DMF) 90 mL ether 180 mL sodium bicarbonate solution (2.5% weight/volume) 90 mL 0.1N hydrochloric acid (HCI) 90 mL brine (salt-saturated water) 50 mL anhydrous THF 7.3 eq 2-(chlorocarbonyloxy)-acetic acid 8 mL dry pyridine 50 mL chloroform 150 mL sodium hydroxide (NaOH) 37% hydrochloric acid 140 mL ethyl acetate (EtOAc) 20 mL anhydrous dichloromethane (DCM) 10 eq oxalyl chloride solution (OxCl) Qsp* Tetrahydrofuran (THF) anhydrous 2.1 eq (BUP) 50 mL ethyl acetate Qsp* Acetone Qsp* Toluene 25 mL methanol 0.3% acid acetic acid 30 mL anhydrous DMF 1.05 eq HBTU 1.05 eq DIPEA 1.05 eq ((3aS,5aR,8aR,8bS)-2,2,7,7-tetramethyltetrahydro-3aH-bis[1,3]dioxolo[ 4,5-b:4',5'-d]pyran-3a-yl) methyl sulfamate (TOP) *qsp = amount sufficient to standardize r (complete) the volume of the formula.
O processo de obtenção do composto 3 a, 7 a-bis(4-terc-butil(1-(4- clorofenil)-1-oxopropan-2-il)amido)bis(oxometileno)bis(oxi) ácido diacético)- quenodeoxicolato-β-alanil-((3aS,5aR,8aR,8bS)-2,2,7,7-trametiltetrahidro-3aH- bis[1,3]dioxolo[4,5-b:4’,5’-d]piran-3a-il) metil sulfamato é conforme segue: 10 g (gramas) (25,5 mmoles) de ácido quenodeoxicólico, 1,05 eq (equivalente- grama) de 2-(1H-benzotriazol-1-il)-1,1,3,3-tetrametil uronio hexafluorofosfato (HBTU), 1,05 eq (equivalente-grama) de cloridrato de β-alanina-benzil éster juntamente com 2,1 eq (equivalente-grama) de di-isopropiletilamina (DIPEA) foram dissolvidos em 100 mL (mmoles) de dimetil formamida anidra (DMF) sob agitação, em atmosfera de nitrogênio e a solução foi deixada a temperatura ambiente por 24h para ocorrência da reação. Após este período, foram adicionados 3 volumes de água destilada gelada para bloqueio da reação. A suspensão resultante foi extraída com 3 x 30 mL (mmoles) de éter e os extratos orgânicos combinados foram lavados com 3 x 30 mL (mmoles) de solução de bicarbonato de sódio (2,5 % peso/volume), 3 x 30 mL (mmoles) de ácido clorídrico (HCI) 0,1 N, 1 x 30 mL (mmoles) de água e 1 x 30 mL (mmoles) de salmoura (água saturada com sal). A solução etérea foi secada sobre sulfato de sódio anidro (Na2SO4), filtrada e concentrada sob vácuo até a obtenção do quenodeoxicolato-β-alanina amida benzil éster (rendimento de 92 %), o qual foi utilizado sem qualquer outro tipo de purificação. 9 g (gramas) (16,3 mmoles) do quenodeoxicolato-β-alanina amida benzil ésterforam adicionados em pequenas proporções em 50 ml_ (mmoles) de THF anidro contendo 7,3 eq (equivalente-grama) de 2-(clorocarbonil oxi)- ácido acético e 8 mL (mmoles) de piridina seca. A suspensão resultante foi deixada em reação por 18 horas à temperatura ambiente e depois secada sob pressão reduzida. O óleo amarelado obtido foi dissolvido em 50 mL (mmoles) de clorofórmio, extraído com 3 x 20 mL (mmoles) de água destilada e com 3 x 20 mL (mmoles) de hidróxido de sódio (NaOH) 1N. Os extratos aquosos combinados foram colocados em um banho de gelo e acidificados até pH 3, com a adição lenta de ácido clorídrico a 37 % sob agitação vigorosa. O precipitado resultante branco, após filtração da solução, foi dissolvido em 50 mL (mmoles) de acetato de etila (EtOAc), secado sobre sulfato de sódio anidro, filtrado e concentrado sob vácuo até a obtenção do composto puro 3a, 7a-bis (oxometileno) bis (oxi) ácido diacético - quenodeoxicolato-β-alanina amida benzil éster (rendimento de 72 %), sendo que a avaliação da pureza foi realizada por cromatografia de camada delgada (TLC). 8 g (gramas) (10,6 mmoles) de 3α, 7a-bis (oxometileno) bis (oxi) ácido diacético- quenodeoxicolato-β-alanina amida benzil éster foram dissolvidas em 20 mL (mmoles) de diclorometano anidro (DCM), a solução foi colocada em um banho de gelo e 10 eq (equivalente-grama) de uma solução de cloreto de oxalila (OxCI) foi adicionada gota a gota por um período de 20 minutos. A mistura foi deixada por 18 horas a temperatura ambiente para ocorrência da reação. A solução obtida foi concentrada sob vácuo até resultar em um óleo de cor acastanhada, que foi triturado com uma mistura de éter e hexano em um banho de gelo seco e acetona, decantando o sobrenadante até ocorrência da solidificação (precipitação). O sólido amarelado foi dissolvido em tetrahidrofurano (THF) anidro e adicionado gota a gota (tipicamente em 30 minutos) em uma solução gelada (em banho de gelo) contendo 2,1 eq (equivalente-grama) de (BUP) em THF, na presença do catalisador DMF. Após esta etapa, a reação foi deixada sob agitação a 55°C por 24 horas ou até estar completa (avaliação por TLC). A solução obtida foi concentrada sob vácuo, dissolvida em 50 mL (mmoles) de acetato de etila e extraída com 3 x 30 mL (mmoles) de hidróxido de sódio 1N, 1 x 30 mL (mmoles) de água destilada e 1 x 30 mL (mmoles) de salmoura (água saturada com sal). A solução orgânica foi deixada sobre sulfato de sódio anidro, filtrada e evaporada em pressão reduzida. O produto obtido foi purificado por coluna cromatográfica de sílica gel usando uma mistura de clorofórmio / acetona / tolueno como fase móvel, obtendo o 3a-7a-bis(4-terc-butil(1- (4-clorofenil)-1-oxopropan-2-il)amido)bis(oxi) ácido diacético)-quenodeoxicolato- β- alanina amida benzil éster (rendimento de 25%) como um pó quase branco. 5 g (gramas) (4,2 mmoles) de 3α-7α-bis(4-terc-butil(1-(4-clorofenil)-1-oxopropan-2- il)amido)bis(oxi) ácido diacético)- quenodeoxicolato- β-alanina amida benzil éster foram dissolvidas em 25 mL (mmoles) de metanol, na presença de um catalisador umedecido com 10 % de Pd/C (paládio/carbono), sendo que esta mistura foi deixada em atmosfera de hidrogênio a 52 psig a temperatura ambiente por 16 horas, para ocorrência da reação. A suspensão foi filtrada através de uma cama de Celite® para remoção do catalisador e a solução resultante foi evaporada sob vácuo. O produto obtido foi purificado por coluna cromatográfica contendo sílica gel, usando uma mistura de clorofórmio / acetona / tolueno com 0,3 % de ácido acético como fase móvel. As frações puras combinadas foram evaporadas sob vácuo na presença de tetracloreto de carbono para remover azeotropicamente o excesso de ácido acético (HAc), até obtenção do composto puro 3α, 7a-bis(4-tercbutil(1-(4-clorofenil)1- oxopropan-2-il)amido) bis(oxometileno) bis(oxi) ácido diacético)- quenodeoxicolato- β-alanina amida, como um sólido amorfo branco, com rendimento quase quantitativo. 2g (gramas) (1,8 mmoles) do 3α, 7a-bis(4-terc-butil(1-(4-clorofenil)1-oxopropan-2- il)amido)bis(oxometileno) bis(oxi) ácido diacético)- quenodeoxicolato-β-alanina amida foram dissolvidas em 30 mL (mmoles) de DMF anidro, juntamente com 1,05 eq (equivalente-grama) de HBTU e com 1,05 eq (equivalente-grama) de DIPEA. Após 1 hora de agitação a temperatura ambiente, 1,05 eq (equivalente-grama) de ((3aS, 5aR, 8aR, 8bS)-2,2,7,7-tetrametiltetrahidro-3aH-bis[ 1,3]dioxolo[4,5-b:45 d]piran-3a-il)metil sulfamate (TOP) foram adicionados e a solução resultante foi deixada para reação em temperatura ambiente por 24 horas. Após este período, a reação foi “bloqueada” pela adição de 3 volumes de água e o produto foi extraído com 3 x 30 mL (mmoles) de EtOAc. Os extratos orgânicos combinados foram lavados com 3 x 30 mL (mmoles) de solução de bicarbonato de sódio (2,5 % peso/volume), 1 x 30 mL (mmoles) de água e 1 x 30 mL (mmoles) de salmoura. A solução orgânica foi secada sobre sulfato de sódio anidro, filtrada e concentrada sob vácuo para obtenção do 3o,7o-bis(4-tercbutil(1-(4-clorofenil)-1-oxopropan-2- il)amido)bis(oxometileno) bis (oxi) ácido diac0tico)-quenodeoxicolato-β-alanil- ((3aS, 5aR, 8aR, 8 b S)-2,2,7,7-tetrametiltetrahidro-3aH-bis[ 1,3]dioxolo[4,5-b:45 'd] piran-3a-il)metil sulfamate (rendimento de 68 %).The process for obtaining compound 3 a, 7 a-bis(4-tert-butyl(1-(4-chlorophenyl)-1-oxopropan-2-yl)amido)bis(oxomethylene)bis(oxy)diacetic acid)- chenodeoxycholate-β-alanyl-((3aS,5aR,8aR,8bS)-2,2,7,7-tramethyltetrahydro-3aH-bis[1,3]dioxolo[4,5-b:4',5'-d ]pyran-3a-yl)methyl sulfamate is as follows: 10 g (grams) (25.5 mmol) chenodeoxycholic acid, 1.05 eq (gram equivalent) 2-(1H-benzotriazol-1-yl)- 1,1,3,3-tetramethyl uronium hexafluorophosphate (HBTU), 1.05 eq (gram equivalent) of β-alanine benzyl ester hydrochloride together with 2.1 eq (gram equivalent) of diisopropylethylamine (DIPEA ) were dissolved in 100 mL (mmoles) of anhydrous dimethyl formamide (DMF) under stirring, in a nitrogen atmosphere, and the solution was left at room temperature for 24 hours for the reaction to occur. After this period, 3 volumes of ice-cold distilled water were added to block the reaction. The resulting suspension was extracted with 3 x 30 mL (mmoles) of ether and the combined organic extracts were washed with 3 x 30 mL (mmoles) of sodium bicarbonate solution (2.5% weight/volume), 3 x 30 mL (mmoles) 0.1 N hydrochloric acid (HCI), 1 x 30 mL (mmoles) water and 1 x 30 mL (mmoles) brine (water saturated with salt). The ethereal solution was dried over anhydrous sodium sulfate (Na2SO4), filtered and concentrated under vacuum until obtaining chenodeoxycholate-β-alanine amide benzyl ester (92% yield), which was used without further purification. 9 g (grams) (16.3 mmoles) of chenodeoxycholate-β-alanine amide benzyl ester were added in small proportions in 50 ml_ (mmoles) of anhydrous THF containing 7.3 eq (gram equivalent) of 2-(chlorocarbonyl oxy) - acetic acid and 8 mL (mmoles) of dry pyridine. The resulting suspension was left to react for 18 hours at room temperature and then dried under reduced pressure. The yellowish oil obtained was dissolved in 50 mL (mmoles) of chloroform, extracted with 3 x 20 mL (mmoles) of distilled water and with 3 x 20 mL (mmoles) of 1N sodium hydroxide (NaOH). The combined aqueous extracts were placed in an ice bath and acidified to pH 3 with the slow addition of 37% hydrochloric acid under vigorous stirring. The resulting white precipitate, after filtering the solution, was dissolved in 50 mL (mmol) of ethyl acetate (EtOAc), dried over anhydrous sodium sulfate, filtered and concentrated under vacuum until obtaining the pure compound 3a, 7a-bis ( oxomethylene) bis(oxy)diacetic acid - chenodeoxycholate-β-alanine amide benzyl ester (yield 72%), and the purity assessment was performed by thin layer chromatography (TLC). 8 g (grams) (10.6 mmoles) of 3α, 7a-bis (oxomethylene) bis (oxy) diacetic acid-chenodeoxycholate-β-alanine amide benzyl ester were dissolved in 20 mL (mmoles) of anhydrous dichloromethane (DCM), the solution was placed in an ice bath and 10 eq (gram equivalents) of a solution of oxalyl chloride (OxCl) was added dropwise over a period of 20 minutes. The mixture was left for 18 hours at room temperature for the reaction to occur. The obtained solution was concentrated under vacuum until resulting in a brownish oil, which was triturated with a mixture of ether and hexane in a bath of dry ice and acetone, decanting the supernatant until solidification occurred (precipitation). The yellowish solid was dissolved in anhydrous tetrahydrofuran (THF) and added dropwise (typically over 30 minutes) to an ice-cold solution (in an ice bath) containing 2.1 eq (gram equivalent) of (BUP) in THF, in the presence of the DMF catalyst. After this step, the reaction was left under stirring at 55°C for 24 hours or until complete (assessment by TLC). The obtained solution was concentrated under vacuum, dissolved in 50 mL (mmoles) of ethyl acetate and extracted with 3 x 30 mL (mmoles) of 1N sodium hydroxide, 1 x 30 mL (mmoles) of distilled water and 1 x 30 mL (mmoles) of brine (water saturated with salt). The organic solution was left over anhydrous sodium sulfate, filtered and evaporated under reduced pressure. The product obtained was purified by silica gel column chromatography using a mixture of chloroform / acetone / toluene as mobile phase, obtaining 3a-7a-bis(4-tert-butyl(1-(4-chlorophenyl)-1-oxopropan- 2-yl)amido)bis(oxy)diacetic acid)-chenodeoxycholate-β-alanine amide benzyl ester (25% yield) as an off-white powder. 5 g (grams) (4.2 mmoles) of 3α-7α-bis(4-tert-butyl(1-(4-chlorophenyl)-1-oxopropan-2-yl)amido)bis(oxy)diacetic acid)- chenodeoxycholate-β-alanine amide benzyl ester were dissolved in 25 mL (mmoles) of methanol, in the presence of a catalyst moistened with 10% Pd/C (palladium/carbon), and this mixture was left in a hydrogen atmosphere at 52 psig at room temperature for 16 hours for the reaction to occur. The suspension was filtered through a pad of Celite® to remove the catalyst and the resulting solution was evaporated under vacuum. The product obtained was purified by column chromatography containing silica gel, using a mixture of chloroform / acetone / toluene with 0.3% acetic acid as mobile phase. The combined pure fractions were evaporated under vacuum in the presence of carbon tetrachloride to azeotropically remove excess acetic acid (HAc), until obtaining the pure compound 3α, 7a-bis(4-tert-butyl(1-(4-chlorophenyl)1- oxopropan-2-yl)amido)bis(oxomethylene)bis(oxy)diacetic acid)-chenodeoxycholate-β-alanine amide, as a white amorphous solid, in almost quantitative yield. 2g (grams) (1.8 mmoles) of 3α,7a-bis(4-tert-butyl(1-(4-chlorophenyl)1-oxopropan-2-yl)amido)bis(oxomethylene) bis(oxy)diacetic acid )- chenodeoxycholate-β-alanine amide were dissolved in 30 mL (mmoles) of anhydrous DMF, together with 1.05 eq (gram equivalent) of HBTU and with 1.05 eq (gram equivalent) of DIPEA. After 1 hour of stirring at room temperature, 1.05 eq (gram equivalent) of ((3aS, 5aR, 8aR, 8bS)-2,2,7,7-tetramethyltetrahydro-3aH-bis[ 1,3]dioxolo[ 4,5-b:45 d]pyran-3a-yl)methyl sulfamate (TOP) were added and the resulting solution was left to react at room temperature for 24 hours. After this period, the reaction was “blocked” by adding 3 volumes of water and the product was extracted with 3 x 30 mL (mmoles) of EtOAc. The combined organic extracts were washed with 3 x 30 mL (mmoles) sodium bicarbonate solution (2.5% weight/volume), 1 x 30 mL (mmoles) water and 1 x 30 mL (mmoles) brine. The organic solution was dried over anhydrous sodium sulfate, filtered and concentrated under vacuum to obtain 3o,7o-bis(4-tertbutyl(1-(4-chlorophenyl)-1-oxopropan-2-yl)amido)bis(oxomethylene ) bis(oxy)diacotic acid)-chenodeoxycholate-β-alanyl-((3aS, 5aR, 8aR, 8 b S)-2,2,7,7-tetramethyltetrahydro-3aH-bis[ 1,3]dioxolo[4, 5-b:45'd]pyran-3a-yl)methyl sulfamate (68% yield).
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BR102012026555-9A BR102012026555B1 (en) | 2012-10-17 | 2012-10-17 | PROCESS FOR OBTAINING AND COMPOSING A DRUG FROM CHENODEOXYCOLATE BOUND TO A NATURAL SULFAMATE MONOSACCHARIDE DERIVATIVE D-FRUCTOSE (TOPIRAMATE) AND TO A PHENYLKETONE (BUPROPRION) FOR THE TREATMENT OF OBESITY AND PLURIMETABOLIC SYNDROMES |
PCT/BR2013/000416 WO2014059499A1 (en) | 2012-10-17 | 2013-10-16 | Preparation method and composition of a pharmaceutical drug from quenodeoxicholate linked to a natural, d-fructose-analogue, sulfamate-derived monosaccharide (topiramate) and to a phenylketone (bupropion) for the treatment of obesity and plurimetabolic syndromes |
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