DE1114188B - Process for the production of new strophanthidol glycosides - Google Patents
Process for the production of new strophanthidol glycosidesInfo
- Publication number
- DE1114188B DE1114188B DEB55963A DEB0055963A DE1114188B DE 1114188 B DE1114188 B DE 1114188B DE B55963 A DEB55963 A DE B55963A DE B0055963 A DEB0055963 A DE B0055963A DE 1114188 B DE1114188 B DE 1114188B
- Authority
- DE
- Germany
- Prior art keywords
- strophanthidol
- glycosides
- new
- production
- strophanthidine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J75/00—Processes for the preparation of steroids in general
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Steroid Compounds (AREA)
- Saccharide Compounds (AREA)
Description
Verfahren zur Herstellung neuer Strophanthidol-glykoside Das von Nagata, Tamm und Reichstein (Helv. chim. acta, 40, S. 41 [1957]) aus den Samen verschiedener Erysimum-Arten isolierte (»Helveticosid« benannte) Strophanthidin-monodigitoxosid, welches nach neueren Befunden auch aus Strophanthus kombd gewonnen werden kann (Deutsche Patentschrift 1082 007), ist ein sehr interessantes herzwirksames Glykosid. Seiner therapeutischen Anwendung - insbesondere der Herstellung von Injektionspräparaten - steht jedoch die relativ geringe Haltbarkeit entgegen. So konnte festgestellt werden, daß Strophanthidin-digitoxosid und dessen genuine Vorstufe, Strophanthidin-digitoxosido-glucosid, sehr leicht Autoxydation erleiden, wenn sie längere Zeit in Wasser oder in organischen Lösungsmitteln gelöst sind; dabei wird die Aldehydgruppe C19 zur Carboxylgruppe oxydiert, und es entstehen herzunwirksame Substanzen.Process for the production of new strophanthidol glycosides that of Nagata, Tamm and Reichstein (Helv. Chim. Acta, 40, p. 41 [1957]) from the seeds of various Erysimum species (named »Helveticosid«) strophanthidin-monodigitoxosid, which, according to recent findings, can also be obtained from Strophanthus kombd (German Patent specification 1082 007), is a very interesting cardiac glycoside. His therapeutic application - in particular the manufacture of injection preparations - however, the relatively short shelf life stands in the way. So it could be established that strophanthidin-digitoxosid and its genuine precursor, strophanthidin-digitoxosido-glucosid, Autoxidation very easily if left in water or organic for a long time Solvents are dissolved; the aldehyde group C19 becomes a carboxyl group oxidizes, and substances that have an adverse effect on the heart develop.
Es wurde nun gefunden, daß man stabile Derivate des Strophanthidin-digitoxosids
bzw. des entsprechenden Digitoxosido-glucosids erhält, wenn man die genannten Glykoside
reduziert, wobei die C19 Aldehydgruppe in eine primäre Alkoholgruppe übergeführt
wird. Die auf diese Weise erhaltenen neuen Strophanthidol-glykoside besitzen - abgesehen
von ihrer Stabilität - den Vorteil, daß sie eine größere Wirksamkeit als die natürlichen
Glykoside aufweisen. Wie aus der nachfolgenden Tabelle hervorgeht, wird durch die
Reduktion der Aldehydgruppe eine etwa 2- bis 3fache Wirkungssteigerung erzielt.
Beispiel 1 Man löst 5 g Strophanthidin-digitoxosid in 200 ml 80%igem Dioxan, gibt eine Lösung von 0,8g Natriumborhydrid in 50 ml 80%igem Dioxan hinzu und läßt das Gemisch S Stunden bei 20° C stehen. Nach Verdünnen mit 500 ml Wasser und Ansäuern auf pH 3 wird die Lösung erschöpfend mit Chloroform Äthanol (2:1) extrahiert. Aus den mit Wasser gewaschenen und mit Natriumsulfat getrockneten Chloroformauszügen erhält man nach Verdampfen des Lösungsmittels reines Strophanthidol-digitoxosid; Ausbeute 85 % der Theorie.EXAMPLE 1 5 g of strophanthidine digitoxoside are dissolved in 200 ml of 80% strength Dioxane, add a solution of 0.8 g of sodium borohydride in 50 ml of 80% strength dioxane and the mixture is allowed to stand at 20 ° C. for S hours. After dilution with 500 ml of water and acidification to pH 3, the solution is exhaustively extracted with chloroform / ethanol (2: 1). From the chloroform extracts washed with water and dried with sodium sulfate pure strophanthidol digitoxoside is obtained after evaporation of the solvent; Yield 85% of theory.
Das amorphe Glykosid bildet bei der Behandlung mit Acetanhydrid in Pyridin ein kristallisierbares Triacetat: Tri-O-acetyl-strophanthidol-mono-digitoxosid. Fp. = 177 bis 181' C (aus Pyridin-Äther-Cyclohexan). [a] -41,4° ± 1 (Äthanol).When treated with acetic anhydride in pyridine, the amorphous glycoside forms a crystallizable triacetate: tri-O-acetyl-strophanthidol-mono-digitoxoside. Mp = 177 to 181 ° C (from pyridine-ether-cyclohexane). [a] -41.4 ° ± 1 (ethanol).
ö UV-Spektrum: A"" = 216 bis 218 m#t;1gF = 4,21; kein Maximum bei etwa 300 mu,. C35 H50 012 (662,7).UV spectrum: A "" = 216 to 218 m # t; 1gF = 4.21; no maximum at around 300 mu. C35 H50 012 (662.7).
Berechnet .... C H3 C O 19,48 0/®; gefunden ..... C H3 C 0 19,36%. Beispiel 2 Man löst 0,25g Strophanthidin-digitoxosid-glucosid in-5 ml abs. Isopropanol, gibt 20 ml einer etwa Imolaren Lösung von Aluminium-isopropylat in Isopropanol hinzu und erhitzt zum Sieden, wobei das Lösungsmittel langsam abdestillieri. Man setzt das Erhitzen so lange fort _ (etwa 5 Stunden), bis sich im Destillat kein Aceton mehr nachweisen läßt. Dann versetzt man die Reaktionslösung mit Wasser, extrahiert das ausgefüllte Aluminium-hydroxyd mehrmals mit heißem 50%igem Äthanol und dampft die wäßrigalkoholischen Auszüge im Vakuum zur Trockne ein. Der Rückstand besteht aus reinem Strophanthidoldigitoxosido-glucosid: Ausbeute 780/a der Theorie.Calculated .... C H3 CO 19.48 0 / ®; found ..... C H3 C 0 19.36%. Example 2 Dissolve 0.25 g of strophanthidine digitoxoside glucoside in 5 ml of abs. Isopropanol, 20 ml of an approximately imolar solution of aluminum isopropylate in isopropanol are added and the mixture is heated to the boil, the solvent slowly distilling off. The heating is continued until (about 5 hours) until no more acetone can be detected in the distillate. The reaction solution is then mixed with water, the filled aluminum hydroxide is extracted several times with hot 50% ethanol and the aqueous-alcoholic extracts are evaporated to dryness in vacuo. The residue consists of pure strophanthidoldigitoxosido-glucoside: yield 780 / a of theory.
Das armorphe Glykosid bildet, mit Acetanhydrid in Pyridin behandelt, ein kristallisierbares Hexaacetat: Hexa-O-acetyl-strophanthidol-digitoxosidoglucosid. Fp. = 146 bis 149° C (aus Pyridin-Äther-Cyclohexan). [a] ö -f- 30,4° ± 1 (Äthanol).The amorphous glycoside, treated with acetic anhydride in pyridine, forms a crystallizable hexaacetate: hexa-O-acetyl-strophanthidol-digitoxosidoglucoside. Mp. = 146 to 149 ° C (from pyridine-ether-cyclohexane). [a] ö -f- 30.4 ° ± 1 (ethanol).
UV-Spektrum: dm", = 216 bis 218 mR.; lga = 4,22; kein Maximum bei etwa 300 mu. C47 H00 020 (951,0).UV spectrum: dm ", = 216 to 218 mR .; lga = 4.22; no maximum at about 300 mu. C47 H00 020 (951.0).
Berechnet .... C H3 C O 27,16 %; gefunden ..... CH3 C 0 26,50%.Calculated .... C H3 C O 27.16%; found ..... CH3 C 0 26.50%.
Claims (1)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB55963A DE1114188B (en) | 1959-12-18 | 1959-12-18 | Process for the production of new strophanthidol glycosides |
LU39458D LU39458A1 (en) | 1959-12-18 | 1960-11-25 | |
CH1338460A CH397659A (en) | 1959-12-18 | 1960-11-30 | Process for the production of new strophanthidol glycosides |
BE598191A BE598191A (en) | 1959-12-18 | 1960-12-14 | New strophantidol glycosides and their preparation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB55963A DE1114188B (en) | 1959-12-18 | 1959-12-18 | Process for the production of new strophanthidol glycosides |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1114188B true DE1114188B (en) | 1961-09-28 |
Family
ID=6971164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB55963A Pending DE1114188B (en) | 1959-12-18 | 1959-12-18 | Process for the production of new strophanthidol glycosides |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE598191A (en) |
CH (1) | CH397659A (en) |
DE (1) | DE1114188B (en) |
LU (1) | LU39458A1 (en) |
-
1959
- 1959-12-18 DE DEB55963A patent/DE1114188B/en active Pending
-
1960
- 1960-11-25 LU LU39458D patent/LU39458A1/xx unknown
- 1960-11-30 CH CH1338460A patent/CH397659A/en unknown
- 1960-12-14 BE BE598191A patent/BE598191A/en unknown
Also Published As
Publication number | Publication date |
---|---|
BE598191A (en) | 1961-06-14 |
CH397659A (en) | 1965-08-31 |
LU39458A1 (en) | 1961-01-25 |
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