RU434739C - Method of producing hydrochloride of 3-methyl-8-methoxy-3h,1,2,5,6-tetrahydropy - Google Patents

Method of producing hydrochloride of 3-methyl-8-methoxy-3h,1,2,5,6-tetrahydropy

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Publication number
RU434739C
RU434739C SU1846675A RU434739C RU 434739 C RU434739 C RU 434739C SU 1846675 A SU1846675 A SU 1846675A RU 434739 C RU434739 C RU 434739C
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RU
Russia
Prior art keywords
methoxy
methyl
hydrochloride
tetrahydropy
formula
Prior art date
Application number
Other languages
Russian (ru)
Inventor
Р.Г. Глушков
М.Д. Машковский
Н.И. Андреева
С.С. Либерман
Л.Н. Герчиков
Original Assignee
Всесоюзный научно-исследовательский химико-фармацевтический институт им.Серго Орджоникидзе
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Application filed by Всесоюзный научно-исследовательский химико-фармацевтический институт им.Серго Орджоникидзе filed Critical Всесоюзный научно-исследовательский химико-фармацевтический институт им.Серго Орджоникидзе
Priority to SU1846675 priority Critical patent/RU434739C/en
Priority to DE19732357320 priority patent/DE2357320C3/en
Application granted granted Critical
Publication of RU434739C publication Critical patent/RU434739C/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D471/00Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
    • C07D471/12Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains three hetero rings
    • C07D471/16Peri-condensed systems

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

1 1ё Изобретение касаетс  способа получени  гидрохлорила С -метил-в метоксиЗН ,1.2.5,6Игетрагидропиразинс{1.2.3-аЬ уЗ-карболина формулы 1 NCHкоторый может найти широкое применение в фармацевтической промышленности. Ранее был описан общий способ пол .учени  конденсирюванных индольных еис тем общей формулу 2, заключ 1ющийс  в циклизации производных /9-карбрлинона формулы 3 хлорокисью фосфора по следующей схеме: ,. :P6G% . :{f zlhi;-;V :-v ;... ,:- ,. (2) I где R - водород, алкил, алкоксигруппа; Ri-алкил; m и n 2 и 3. Согласна этому методу образующуюс  при циклизации реакционную массу упаривают в вакууме досуха, остаток разлагают льдом, полученный раствор подщелачивают разбавленным аммиаком и извлекают хлороформом основание 1 (где m п « 2, R. 8-метокси, R . СНз), которое перево;и т в битартрат. Однако полученное таким способом основание 1 содержит примесь основани  формулы 4, отделение от которого затруднено . Гидрохлорид формулы 1 - юнказан зтим методом синтезирован не был. С целью получени  инк1взанд с высоким выходом, не содержащего примесц карболинона формулы 4, разработан метод его получени , заключающийс  в-циклизации гидрохлорида формулы 4 хлорокисью фосфора , выделении образующегос  дихлорфосфоната формулы 5 и алкоголизе последнего спиртами, например этанолом, по следующей схеме: «.jn .: РОС1з N TfNH М( OPOCI© . NCHii Синтез соединени  1 через ранее не описанный дихлорфосфонат 5 путем его алкоголиза спиртами позвол ет получить инказан с Высоким выходом (85% счита  на соединение 4; выход основани  1 по известному способу (70%), не содержащий прймеСй гидрохлорида 4. П р и,м е р 1, Получение дихлорфосфоната 3-метил-8 метокси-ЗН,1,2,5,6-тетрагидроп 1разино 1 ,2,3-а,Ь}-/3 -карбрлини  ). . Смесь 162 г гидрох орида (М,Ы-диметиламино )этил -6-метокси-1 кс6-1,52,3,4 -тёт|р1агидро-/9-карболинаИ 1 л хлорокиси фосфора кип т т при перемешивании 4 ч. В процессе нагревани  .образуетс  раствор, из которого выпадает новый оСадок. По охлаждении до 20°С массу фильтруют, промыг 1зают эфиром или бензолом-и сушат. Получают дихлорфосфонат 3-Метил-8-м1втокси-ЗН ,1,2,5,6-тетрагидропиразинс(1,2,3-а, )5-карболини  (5), выход 182 г (93,3% от теоретического), т.пл. 196-198С, Найдено, -%: С 46,48: Н 4,78; N 10,94,- Р 7,96. CiBHisCIaNjOaP Вычислено, %: С46,15; Н4.61, N 10,76 Р7,94.. . Пример 2. Получение ги;црохлорида 3-метил-8-метокси-ЗН,1,2,5,6-Тетрагидропиразино 1 ,2,3-а,Ь1- -карболина. Смесь 182 г дихлорфосфоната 3-метил8-метокси-ЗН ,1,2,5,6:тетрагидропиразино 1-,2,3-а,Ь -уЗ-карболини  (5) и 1 л абсолютного этилового спирта кип т т при перемешивании 1 ч. В процессе нагревани  образуетс  раствор,, из которого выпадает осадок. Реакционную массу охлаждают на льду (1-1,5 ч), выпавший осадок отфильтровывают , промывают холодном абсолютным этиловым спиртом и сушат. Получают гидро- хлорид 3-метил-8-метокси-ЗН,1,2,5,6-тетрагидропиразино 1 ,2,3-а,Ь -/3-карболина, выход 130,5 г (95% от теоретического), т.пл. 306-309°С.: Найдено, %: С 61.65; Н 6.00: 0112411: N 14,37. Ci5Hi7N30-HCI Вычислено, %: С 61,75; Ч 5,83; С1 12.17: N 14.40.1 1st invention The invention relates to a process for the preparation of C-methyl-b-methoxyZH hydrochloryl, 1.2.5,6Hetrahydropyrazines {1.2.3-a3 U-carboline of formula 1 NCH, which can be widely used in the pharmaceutical industry. The general method for the preparation of condensed indole compounds with the general formula 2 has previously been described, which consists in cyclizing the derivatives of / 9-carbrilinone of formula 3 with phosphorus oxychloride according to the following scheme:,. : P6G%. : {f zlhi; -; V: -v; ...,: -,. (2) I where R is hydrogen, alkyl, alkoxy; Ri-alkyl; m and n are 2 and 3. According to this method, the reaction mass formed during cyclization is evaporated to dryness in vacuo, the residue is decomposed with ice, the resulting solution is made alkaline with diluted ammonia, and base 1 is extracted with chloroform (where m p is “2, R. 8-methoxy, R. CH ), which is converted; and t into bitartrate. However, base 1 thus obtained contains an admixture of a base of formula 4, which is difficult to separate from. The hydrochloride of formula 1 - was not synthesized by this method. In order to obtain inc1 vzand with a high yield that does not contain the impurities of carbolinone of formula 4, a method has been developed for its preparation, which consists in cyclizing the hydrochloride of formula 4 with phosphorus oxychloride, isolating the resulting dichlorophosphonate of formula 5 and alcoholizing the latter with alcohols, for example ethanol, according to the following scheme: ".jn .: POCl3 N TfNH M (OPOCI. NCHii) Synthesis of compound 1 through dichlorophosphonate 5 not previously described by its alcoholysis with alcohols yields incazane with a high yield (85% based on compound 4; base 1 yield according to the known method a person (70%) not containing direct hydrochloride 4. Example 1, Preparation of 3-methyl-8 methoxy-ZH dichlorophosphonate, 1,2,5,6-tetrahydrop 1razino 1, 2,3-a, B} - / 3-carbbrlini.) A mixture of 162 g of hydrochloride (M, L-dimethylamino) ethyl-6-methoxy-1 x 6-1,52,3,4-tetra | p1-hydro- / 9-carboline and 1 l of chloroxide phosphorus is boiled with stirring for 4 hours. During heating, a solution forms, from which a new precipitate forms. After cooling to 20 ° C, the mass is filtered, washed with ether or benzene and dried. Get dichlorophosphonate 3-Methyl-8-m1vtoxy-ZN, 1,2,5,6-tetrahydropyrazines (1,2,3-a,) 5-carbolini (5), yield 182 g (93.3% of theory), so pl. 196-198C, Found, -%: C 46.48: H 4.78; N, 10.94; - P, 7.96. CiBHisCIaNjOaP Calculated,%: C46.15; H4.61, N 10.76 P7.94 ... Example 2. Obtaining gi; 3-methyl-8-methoxy-ZH, 1,2,5,6-Tetrahydropyrazino 1, 2,3-a, L1-carboline hydrochloride. A mixture of 182 g of dichlorophosphonate 3-methyl8-methoxy-ZH, 1,2,5,6: tetrahydropyrazino 1-, 2,3-a, L-y3-carbolini (5) and 1 L of absolute ethanol is boiled with stirring 1 hours. During heating, a solution forms, from which a precipitate forms. The reaction mass is cooled on ice (1-1.5 h), the precipitate formed is filtered off, washed with cold absolute ethanol and dried. Get 3-methyl-8-methoxy-3H hydrochloride, 1,2,5,6-tetrahydropyrazino 1, 2,3-a, b - / 3-carboline, yield 130.5 g (95% of theory), so pl. 306-309 ° C.: Found,%: C 61.65; H 6.00: 0112411: N 14.37. Ci5Hi7N30-HCI Calculated,%: C 61.75; H 5.83; C1 12.17: N 14.40.

5434739-в5434739-in

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ж.гггжж« 1 5;э 5 ii J. yyyy “1 5; e 5 ii

да II качестм цвлваого nrxv ид v ный эш овый спирт.Yes II quality tsvlogo nrxv id v ny eshovy alcohol.

SU1846675 1972-11-17 1972-11-17 Method of producing hydrochloride of 3-methyl-8-methoxy-3h,1,2,5,6-tetrahydropy RU434739C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SU1846675 RU434739C (en) 1972-11-17 1972-11-17 Method of producing hydrochloride of 3-methyl-8-methoxy-3h,1,2,5,6-tetrahydropy
DE19732357320 DE2357320C3 (en) 1972-11-17 1973-11-16 3-methyl-8-methoxy- (3H) -l, 2,5,6tetrahydropyrazino- [1,23-ab] - ß-carboline, its salts and a process for their preparation and pharmaceuticals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1846675 RU434739C (en) 1972-11-17 1972-11-17 Method of producing hydrochloride of 3-methyl-8-methoxy-3h,1,2,5,6-tetrahydropy

Publications (1)

Publication Number Publication Date
RU434739C true RU434739C (en) 1993-11-30

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DE (1) DE2357320C3 (en)
RU (1) RU434739C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0357417A1 (en) * 1988-09-01 1990-03-07 Glaxo Group Limited Lactam derivatives

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DE2357320B2 (en) 1979-03-22
DE2357320A1 (en) 1974-05-22
DE2357320C3 (en) 1979-11-08

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