CH171237A - Method for the preparation of a cardiac active glucoside. - Google Patents
Method for the preparation of a cardiac active glucoside.Info
- Publication number
- CH171237A CH171237A CH171237DA CH171237A CH 171237 A CH171237 A CH 171237A CH 171237D A CH171237D A CH 171237DA CH 171237 A CH171237 A CH 171237A
- Authority
- CH
- Switzerland
- Prior art keywords
- acetic acid
- lanata
- genuine
- split
- digitoxin
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 8
- 229930182478 glucoside Natural products 0.000 title claims description 6
- 150000008131 glucosides Chemical class 0.000 title claims description 6
- 238000002360 preparation method Methods 0.000 title claims description 4
- 230000000747 cardiac effect Effects 0.000 title 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 24
- HPMZBILYSWLILX-UMDUKNJSSA-N 3'''-O-acetyldigitoxin Chemical compound C1[C@H](OC(C)=O)[C@H](O)[C@@H](C)O[C@H]1O[C@@H]1[C@@H](C)O[C@@H](O[C@@H]2[C@H](O[C@@H](O[C@@H]3C[C@@H]4[C@]([C@@H]5[C@H]([C@]6(CC[C@@H]([C@@]6(C)CC5)C=5COC(=O)C=5)O)CC4)(C)CC3)C[C@@H]2O)C)C[C@@H]1O HPMZBILYSWLILX-UMDUKNJSSA-N 0.000 claims description 8
- HPMZBILYSWLILX-UHFFFAOYSA-N Acetyl-digitoxine Natural products C1C(OC(C)=O)C(O)C(C)OC1OC1C(C)OC(OC2C(OC(OC3CC4C(C5C(C6(CCC(C6(C)CC5)C=5COC(=O)C=5)O)CC4)(C)CC3)CC2O)C)CC1O HPMZBILYSWLILX-UHFFFAOYSA-N 0.000 claims description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 8
- 229960003635 acetyldigitoxin Drugs 0.000 claims description 8
- 240000001879 Digitalis lutea Species 0.000 claims description 6
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 5
- 239000008103 glucose Substances 0.000 claims description 5
- FDWRIIDFYSUTDP-KVTDHHQDSA-N (2r,4r,5s,6r)-6-methyloxane-2,4,5-triol Chemical compound C[C@H]1O[C@@H](O)C[C@@H](O)[C@@H]1O FDWRIIDFYSUTDP-KVTDHHQDSA-N 0.000 claims description 4
- FDWRIIDFYSUTDP-UHFFFAOYSA-N 102850-49-7 Natural products CC1OC(O)CC(O)C1O FDWRIIDFYSUTDP-UHFFFAOYSA-N 0.000 claims description 4
- JWFRNGYBHLBCMB-UHFFFAOYSA-N D-Canaytose Natural products CC(O)C(O)C(O)CC=O JWFRNGYBHLBCMB-UHFFFAOYSA-N 0.000 claims description 4
- WDJUZGPOPHTGOT-OAXVISGBSA-N Digitoxin Natural products O([C@H]1[C@@H](C)O[C@@H](O[C@@H]2C[C@@H]3[C@@](C)([C@@H]4[C@H]([C@]5(O)[C@@](C)([C@H](C6=CC(=O)OC6)CC5)CC4)CC3)CC2)C[C@H]1O)[C@H]1O[C@@H](C)[C@H](O[C@H]2O[C@@H](C)[C@@H](O)[C@@H](O)C2)[C@@H](O)C1 WDJUZGPOPHTGOT-OAXVISGBSA-N 0.000 claims description 4
- 102000004190 Enzymes Human genes 0.000 claims description 4
- 108090000790 Enzymes Proteins 0.000 claims description 4
- XZTUSOXSLKTKJQ-UHFFFAOYSA-N Uzarigenin Natural products CC12CCC(C3(CCC(O)CC3CC3)C)C3C1(O)CCC2C1=CC(=O)OC1 XZTUSOXSLKTKJQ-UHFFFAOYSA-N 0.000 claims description 4
- XZTUSOXSLKTKJQ-CESUGQOBSA-N digitoxigenin Chemical compound C1([C@H]2CC[C@]3(O)[C@H]4[C@@H]([C@]5(CC[C@H](O)C[C@H]5CC4)C)CC[C@@]32C)=CC(=O)OC1 XZTUSOXSLKTKJQ-CESUGQOBSA-N 0.000 claims description 4
- QONQRTHLHBTMGP-UHFFFAOYSA-N digitoxigenin Natural products CC12CCC(C3(CCC(O)CC3CC3)C)C3C11OC1CC2C1=CC(=O)OC1 QONQRTHLHBTMGP-UHFFFAOYSA-N 0.000 claims description 4
- WDJUZGPOPHTGOT-XUDUSOBPSA-N digitoxin Chemical compound C1[C@H](O)[C@H](O)[C@@H](C)O[C@H]1O[C@@H]1[C@@H](C)O[C@@H](O[C@@H]2[C@H](O[C@@H](O[C@@H]3C[C@@H]4[C@]([C@@H]5[C@H]([C@]6(CC[C@@H]([C@@]6(C)CC5)C=5COC(=O)C=5)O)CC4)(C)CC3)C[C@@H]2O)C)C[C@@H]1O WDJUZGPOPHTGOT-XUDUSOBPSA-N 0.000 claims description 4
- 229960000648 digitoxin Drugs 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- YFGQJKBUXPKSAW-YSTAXILLSA-N Lanatoside A Chemical compound O([C@H]1[C@@H](OC(C)=O)C[C@@H](O[C@@H]1C)O[C@H]1[C@@H](O)C[C@@H](O[C@@H]1C)O[C@H]1[C@@H](O)C[C@@H](O[C@@H]1C)O[C@@H]1C[C@@H]2[C@]([C@@H]3[C@H]([C@]4(CC[C@@H]([C@@]4(C)CC3)C=3COC(=O)C=3)O)CC2)(C)CC1)[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O YFGQJKBUXPKSAW-YSTAXILLSA-N 0.000 claims description 2
- 238000005903 acid hydrolysis reaction Methods 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- 230000030833 cell death Effects 0.000 claims description 2
- 238000002560 therapeutic procedure Methods 0.000 claims 2
- 238000003776 cleavage reaction Methods 0.000 claims 1
- 230000007017 scission Effects 0.000 claims 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 239000000284 extract Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 229940092219 digitalis leaves Drugs 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 239000002024 ethyl acetate extract Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- GBMDVOWEEQVZKZ-UHFFFAOYSA-N methanol;hydrate Chemical compound O.OC GBMDVOWEEQVZKZ-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J19/00—Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 by a lactone ring
- C07J19/005—Glycosides
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P33/00—Preparation of steroids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biotechnology (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- Genetics & Genomics (AREA)
- Saccharide Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 166354. Verfahren zur Darstellung eines herzwirksamen Glucosides. Das vorliegende Verfahren betrifft die Darstellung von Acetyldigitoxin und ist da durch gekennzeichnet, dass man Digilanid A (Helvetica Chimica Acta, Band 16, Seite 1088 ff.), welches identisch ist mit dem so genannten genuinen Lanataglucosid A, der Einwirkung eines zuckerabspaltenden Enzyms unterwirft.
Man kann so vorgehen, dass man zerklei nerte Blätter von Digitalis lanata bei Gegen wart voll Wasser mit einem Extraktionsmittel stehen lässt, bis die enzymatische Glucose abspaltung aus dem genuinen LanataglucosidA erfolgt ist, dann den Extrakt abtrennt und auf Acetyldigitoxin verarbeitet, oder dass mal) frische Blätter der Digitalis lanata mit einem den Zelltod herbeiführenden und gleichzeitig die Fäulnis verhindernden Medium, wie Es sigester oder Chloroform, zusammenbringt und stehen lässt,
bis die Glucose aus dem genuinen Glucosid abgespalten ist und dann die Extrak tion des Acetyldigitoxins vornimmt.
Vorteilhaft arbeitet man auch so, dass man das enzymhaltige Material in Form von zerkleinerten Digitalisblättern in eine alko- holisch-wässerige Lösung von Lanatagluco- sid A einträgt, dann damit in Berührung lässt, bis die Abspaltung der Glucose erfolgt ist, und hierauf das gebildete Acetyldigito- xin isoliert.
<I>Beispiel:</I> 2 gr des genuinen Lanataglucosids A, ge löst in 800 cm' Alkohol, werden mit dem Enzymmaterial, bestehend aus 1 kg fein zer kleinerten frischen Blättern von Digitalis lanata, vermischt und zwei bis drei Tage lang stellen gelassen, filtriert, der Rückstand mit Alkohol-Wasser 1 : 1 erschöpfend nachgewa schen. Das klare Filtrat wird mit Essigester erschöpfend extrahiert. Der Essigesterextrakt wird filtriert, im Vakuum völlig eingedampft und der Rückstand mit 2 bis 3 Liter Äther erschöpfend extrahiert, wobei das abgebaute Glucosid in den Äther geht.
Nach dem Fil trieren wird die Ätherlösung im Vakuum völlig eingedampft und der Rückstand mit Petrolätlier nochmals gewaschen, bis der Petroläther fast farblos bleibt. Der ungelöste Anteil .wird in 2 Liter eines Gemisches von Wasser-Methanol 1:1 gelöst und mit un löslichem Gerbstoffällungsmittel behandelt. Nach dem Filtrieren wird die Lösung im Vakuum vom Methanol befreit, wobei das partiell abgebaute Cxlucosid, das durch Kristal lisation aus Alkohol gereinigt werden kann; ausfällt.
Das Acetyldigitoxin kristallisiert aus ver dünntem Alkohol in glänzenden rechteckigen Täfelchen. Es ist ziemlich leicht löslich in Methanol und Äthanol, leicht löslich in Chloro- form - schwer löslich in Äther und prak tisch unlöslich in Wasser. Die Elementar analyse ergab C = 63,0 bis 64,0 % und H = 8,0 bis 8,,
5 %. Bei der Laktontitration verbrauchten 0,076 gi- Substanz 1,9 cm' 1/jo n Lauge, woraus sich ein Molekulargewicht von etwa 800 ableitet.
Bei der sauren Hydrolyse liefert die Substanz etwa 46 % Aglucon (Digitoxigenin), etwa 55'/o Digitoxose und etwa 7,5% Essigsäure. Die Spaltung erfolgt nach der Gleichung:
<B>043H66014</B> + <B>4 H20</B> = C23113404 + <B>3</B> C6111204 + 02H402 Digitoxigenin Digitoxose Essigsäure. Bei vorsichtiger Behandlung mit verdünnten Alkalien wird nur die Essigsäure abgespalten und man erhält Digitoxiir neben essigsaurem Alkali nach der Gleichung: <B>C431166014</B> + NaOH = C411164013 + CHSCOONa Digitoxin.
Additional patent to the main patent No. 166354. Process for the preparation of a glucoside that acts on the heart. The present method relates to the preparation of acetyldigitoxin and is characterized in that digilanide A (Helvetica Chimica Acta, Volume 16, page 1088 ff.), Which is identical to the so-called genuine lanataglucoside A, is subjected to the action of a sugar-splitting enzyme.
One can proceed in such a way that one leaves the crushed leaves of Digitalis lanata in the presence full of water with an extractant until the enzymatic splitting of glucose from the genuine LanataglucosidA takes place, then the extract is separated and processed on acetyldigitoxin, or that sometimes) fresh ones Leaves of the digitalis lanata are brought together and left to stand with a medium that causes cell death and at the same time prevents putrefaction, such as es sigester or chloroform,
until the glucose is split off from the genuine glucoside and then extracts the acetyl digitoxin.
It is also advantageous to work in such a way that the enzyme-containing material is introduced in the form of crushed digitalis leaves into an alcoholic-aqueous solution of lanataglucoside A, then left in contact with it until the glucose has been split off, and then the acetyldigito formed - xin isolated.
<I> Example: </I> 2 g of the genuine lanataglucoside A, dissolved in 800 cm of alcohol, are mixed with the enzyme material, consisting of 1 kg of finely chopped fresh leaves of Digitalis lanata, and left for two to three days left, filtered, the residue washed thoroughly with alcohol-water 1: 1. The clear filtrate is extracted exhaustively with ethyl acetate. The ethyl acetate extract is filtered, completely evaporated in vacuo and the residue extracted exhaustively with 2 to 3 liters of ether, the degraded glucoside going into the ether.
After filtering, the ether solution is completely evaporated in vacuo and the residue is washed again with petroleum ether until the petroleum ether remains almost colorless. The undissolved portion .wird in 2 liters of a mixture of water-methanol 1: 1 and treated with insoluble tannin precipitant. After filtering, the solution is freed from methanol in vacuo, the partially degraded Cxlucosid, which can be purified by crystallization from alcohol; fails.
The acetyl digitoxin crystallizes from diluted alcohol in shiny rectangular tablets. It is fairly easily soluble in methanol and ethanol, slightly soluble in chloroform - sparingly soluble in ether and practically insoluble in water. The elemental analysis showed C = 63.0 to 64.0% and H = 8.0 to 8 ,,
5%. In the lactone titration, 0.076 gi substance consumed 1.9 cm -1 / n of lye, from which a molecular weight of about 800 is derived.
In acid hydrolysis the substance yields about 46% aglucon (digitoxigenin), about 55% digitoxose and about 7.5% acetic acid. The split occurs according to the equation:
<B> 043H66014 </B> + <B> 4 H20 </B> = C23113404 + <B> 3 </B> C6111204 + 02H402 Digitoxigenin Digitoxose acetic acid. With careful treatment with dilute alkalis, only the acetic acid is split off and digitoxin is obtained in addition to acetic acid alkali according to the equation: <B> C431166014 </B> + NaOH = C411164013 + CHSCOONa digitoxin.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH171237T | 1932-07-22 | ||
| CH166354T | 1932-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH171237A true CH171237A (en) | 1934-08-15 |
Family
ID=25718281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH171237D CH171237A (en) | 1932-07-22 | 1932-07-22 | Method for the preparation of a cardiac active glucoside. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH171237A (en) |
-
1932
- 1932-07-22 CH CH171237D patent/CH171237A/en unknown
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