CH97802A - Process for the preparation of ergotamine citrate. - Google Patents
Process for the preparation of ergotamine citrate.Info
- Publication number
- CH97802A CH97802A CH97802DA CH97802A CH 97802 A CH97802 A CH 97802A CH 97802D A CH97802D A CH 97802DA CH 97802 A CH97802 A CH 97802A
- Authority
- CH
- Switzerland
- Prior art keywords
- ergotamine
- citrate
- citric acid
- process according
- solution
- Prior art date
Links
- OFKDAAIKGIBASY-VFGNJEKYSA-N ergotamine Chemical compound C([C@H]1C(=O)N2CCC[C@H]2[C@]2(O)O[C@@](C(N21)=O)(C)NC(=O)[C@H]1CN([C@H]2C(C3=CC=CC4=NC=C([C]34)C2)=C1)C)C1=CC=CC=C1 OFKDAAIKGIBASY-VFGNJEKYSA-N 0.000 title claims description 25
- 229960004943 ergotamine Drugs 0.000 title claims description 25
- XCGSFFUVFURLIX-UHFFFAOYSA-N ergotaminine Natural products C1=C(C=2C=CC=C3NC=C(C=23)C2)C2N(C)CC1C(=O)NC(C(N12)=O)(C)OC1(O)C1CCCN1C(=O)C2CC1=CC=CC=C1 XCGSFFUVFURLIX-UHFFFAOYSA-N 0.000 title claims description 25
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 10
- 238000002360 preparation method Methods 0.000 title claims description 5
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 27
- 239000000243 solution Substances 0.000 claims description 16
- 239000003960 organic solvent Substances 0.000 claims description 8
- 239000012458 free base Substances 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 229930013930 alkaloid Natural products 0.000 claims description 3
- 150000003797 alkaloid derivatives Chemical class 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000007858 starting material Substances 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 2
- 239000000047 product Substances 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 210000003608 fece Anatomy 0.000 claims 1
- 239000004922 lacquer Substances 0.000 claims 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 240000003085 Quassia amara Species 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D519/00—Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups C07D453/00 or C07D455/00
- C07D519/02—Ergot alkaloids of the cyclic peptide type
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
Verfahren zur Darstellung von Ergotamineitrat. Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Darstellung des bisher unbekannten Ergotamineitrates. Als Aus gangsmaterial kann man sowohl die reine Base, z. B. ihre Kristallisation aus wasser haltigem Aceton, wie sie in Patent Nr.
$6'321 erwähnt ist, oder ein ergotaminreiches Al kaloidrohprodukt verwenden und in letz terem Falle die Salzbildung zur Abtrennung des<B>Ei</B> rgotamiris von Begleitstoffen ver wenden.
Das Verfahren zur Darstellung von Er- butamincitrat beruht darauf, dass man auf Ergotamin eine, ausreichende Menge von Ci- tronen.säure nach Art der Salzbildung ein wirken lässt.
Zur Darstellung von Ergotamincitrat in fester kristallisierter Form löst man die freie Base zweckmässig in einem mit Wasser misch baren, indifferenten, organischen Lösungs mittel, wie Alkohol oder Holzgeist, auf und fügt hierauf die Crtranensäure zu, wodurch die kristallinische Ausscheidung des entspre- chendenSalzes bewirkt wird.
Man kann auch so verfahren, dass aian zu einer Lösung des Ergotamins in mit Wasser nicht misch- baren organischen Lösungsmitteln, wie Äther und Benzol, vorsichtig so lange eine Citronen- säurelösung zusetzt, als noch eine Fällung entsteht und die amorphe Fällung aus einem geeigneten Lösungsmittel, z. B. Holzgeist, umkristallisiert.<B>Ei</B> rgotamincitrat ist in Was ser leichter löslich als die freie Base und reagiert in wässeriger Lösung gegen Lackmus schwach sauer; es bildet mit geeigneten or ganischen Lösungsmitteln schöne Kristalli- sationsverbindungen.
Zur Darstellung von Ergotamincitrat in wässerigen Lösungen, sowohl reinen, als auch solchen, denen Konservierungsmittel, wie Al kohol und Glyzerin, zugesetzt sind, fügt man dem Lösungsmittel die ausreichende Menge Citronensäure zu und versetzt die so ver dünnte Säure reit einer konzentrierten Lö sung der Ergotaminbase in eineu organischen Lösungsmittel; z. B. Alkohol.
Wie die freie Base, so erleiden auch Ergotamincitrat und seine Lösungen nament lich am Licht durch Luftsauerstoff oxydative Veränderungen unter Gelb- und Braun färbung. Man vermeidet dieselben, indem man bei der Herstellung und bei der Auf- Bewahrung von Ergotamincitrat und seiner Lösungen, insbesondere beim Bereiten und -Abfüllen von Injektionslösungen unter Ver wendung geeigneter sauerstoffreier Gase, wie Stickstoff und Kohlendioxyd, den Luftzutritt erhindert.
Beispiel <I>1:</I> Zur Bereitung des Ergotamincitrates in fester Form löst man 1,25 gr Ergotamin- Acetonverbindung, das ist 1,0 -r freie Base in 10 cm' Methylalkohol, erwärmt ein wenig und versetzt die Lösung mit 0,186 gr wasser- halti#er Citronensäure,
gelöst in etwas Me- thy lalkohol. Nach Zusatz von 1 cm' Wasser kristallisiert bei langsamem Erkalten das Citrat in kleinen glänzenden Prismen zu Drusen gruppiert, die beim Trocknen zur Gewichtskonstanz etwa 12 rq ihres Gewichtes an Kristallösungsmitteln verlieren und dann einen Stickstoffgehalt von 10,1 ö aufweisen,
s@ntsprechend einem Salz von der Zusammen- -setzung von \? Ergotamin -E- 1 Citroitens < iure. <I>Beispiel</I> Zur Bereitung des Ergotarni.ncitrates in Lösung wird 1,0 -r Ergotamin in 50 cm' Al kohol gelöst und mit 0,7 \%'Niger ivüsseriget Kochsalzlösung, die 0,39 gr Citronensäure gelöst enthält,
auf 1 Liter verdünnt, -wobei einc> einpromillige wasserklare Lösung des Alkaloides entsteht. Durchleiten von Stick- 4off und Aufbewahren der Lösung unter dem sauerstoffreien Gase verhindern die an (!er Luft, namentlich am Licht., leicht ein- 9 retende Gelbfärbung der Lösung. 1Veutrali- .#:
ation der Lösung mit Alkali betvirkt Fäl lung der Base, die sich in überschüssigem Alkali wieder löst.
Process for the preparation of ergotamine nitrate. The present invention relates to a method for the preparation of the previously unknown ergotamine nitrate. As a starting material you can use both the pure base, z. B. their crystallization from water-containing acetone, as described in patent no.
$ 6,321 is mentioned, or use an ergotamine-rich alkaloid raw product and in the latter case use the salt formation to separate the <B> egg </B> rgotamiris from accompanying substances.
The process for preparing erbutamine citrate is based on allowing a sufficient amount of citric acid to act on ergotamine in the manner of salt formation.
To prepare ergotamine citrate in solid crystallized form, it is expedient to dissolve the free base in a water-miscible, indifferent, organic solvent such as alcohol or wood spirit, and then add the transranic acid, which causes the crystalline precipitation of the corresponding salt .
One can also proceed in such a way that a citric acid solution is carefully added to a solution of the ergotamine in water-immiscible organic solvents such as ether and benzene as long as a precipitate is still formed and the amorphous precipitate from a suitable solvent , e.g. B. wood spirit, recrystallized. <B> Egg </B> rgotamine citrate is more soluble in water than the free base and reacts slightly acidic in aqueous solution to litmus; it forms beautiful crystallization compounds with suitable organic solvents.
For the preparation of ergotamine citrate in aqueous solutions, both pure and those to which preservatives such as alcohol and glycerine are added, the solvent is added with a sufficient amount of citric acid and the diluted acid is added to a concentrated solution of the ergotamine base in an organic solvent; z. B. Alcohol.
Like the free base, ergotamine citrate and its solutions also undergo oxidative changes with yellow and brown coloration when exposed to light due to atmospheric oxygen. The same can be avoided by preventing the access of air during the production and storage of ergotamine citrate and its solutions, especially when preparing and filling injection solutions using suitable oxygen-free gases such as nitrogen and carbon dioxide.
Example <I> 1: </I> To prepare the ergotamine citrate in solid form, dissolve 1.25 g of ergotamine-acetone compound, that is 1.0 -r free base in 10 cm 'of methyl alcohol, heat a little and add the solution 0.186 gr water-containing citric acid,
dissolved in a little methyl alcohol. After adding 1 cm 'of water, the citrate crystallizes in small, shiny prisms to form drusen, which when dried to constant weight lose about 12 qq of their weight in crystal solvents and then have a nitrogen content of 10.1 o,
corresponds to a salt from the composition of \? Ergotamine -E- 1 Citroitens <iure. <I> Example </I> To prepare the Ergotarni.ncitrate in solution 1.0 -r ergotamine is dissolved in 50 cm 'alcohol and mixed with 0.7%' Niger i-liquid saline solution containing 0.39 g citric acid dissolved ,
diluted to 1 liter, -wherein a> one-percent, water-clear solution of the alkaloid is produced. Passing nitrogen through and storing the solution under the oxygen-free gases prevent the solution from becoming yellow, which can easily be saved in air, especially in the light. 1 Neutral. #:
Ation of the solution with alkali causes precipitation of the base, which dissolves again in excess alkali.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH92840T | 1920-10-14 | ||
| CH97802T | 1921-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH97802A true CH97802A (en) | 1923-02-16 |
Family
ID=25704578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH97802D CH97802A (en) | 1920-10-14 | 1921-09-29 | Process for the preparation of ergotamine citrate. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH97802A (en) |
-
1921
- 1921-09-29 CH CH97802D patent/CH97802A/en unknown
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