CH207497A - Process for the preparation of an aldehyde of the cyclopentanopolyhydrophenanthrene series. - Google Patents
Process for the preparation of an aldehyde of the cyclopentanopolyhydrophenanthrene series.Info
- Publication number
- CH207497A CH207497A CH207497DA CH207497A CH 207497 A CH207497 A CH 207497A CH 207497D A CH207497D A CH 207497DA CH 207497 A CH207497 A CH 207497A
- Authority
- CH
- Switzerland
- Prior art keywords
- aldehyde
- preparation
- oxy
- production
- cyclopentanopolyhydrophenanthrene series
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 7
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 title claims description 3
- 238000002360 preparation method Methods 0.000 title claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- DLLJVQNYBYOKGS-UHFFFAOYSA-N ethoxyethane;pentane Chemical compound CCCCC.CCOCC DLLJVQNYBYOKGS-UHFFFAOYSA-N 0.000 claims description 3
- 125000003172 aldehyde group Chemical group 0.000 claims description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000003301 hydrolyzing effect Effects 0.000 claims description 2
- 239000013067 intermediate product Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000021736 acetylation Effects 0.000 description 1
- 238000006640 acetylation reaction Methods 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- -1 bisulfite compound Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 1
- 229940012189 methyl orange Drugs 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 150000007659 semicarbazones Chemical class 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J3/00—Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by one carbon atom
-
- 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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Aldehyds der Cyclopentanopoly- hydrophenanthr en-Reihe. Es wurde gefunden, dass man zu einem 17- Formyl - cyclopentanopolyhydrophenanthren gelangen kann, wenn man in einem acylier- ten d5-3-Oxy-ätio-cholensäui-ehalogenid die substituierte Carboxylgruppe mit Hilfe von Reduktionsmitteln in die Aldehydgruppe über führt und anschliessend mit hydrolinierenden Mitteln behandelt.
Das so gewonnene d5-3-Oxy-17-formyl- ätio-cholen der Formel
EMI0001.0014
bildet Kristalle, die sich aus Äther-Pentan umkristallisieren lassen.
Die verfahrensgemässe Reduktion lässt sich nach bekannten Methoden durchführen. Es sei diesbezüglich zum Beispiel auf das Hand buch "Die Methoden der organischen Chemie", von Houben-Weyl, 3. Auflage, Band II, Seiten 287-293, verwiesen. Beispielsweise geht man so vor, dass man den Ausgangsstoff katalytisch reduziert. Anschliessend unter wirft man das Produkt einer Eydrolyse. Die Reaktion kann zum Beispiel für. das folgende Beispiel wie nachstehend formuliert werden:
EMI0001.0020
Die neue Verbindung soll zur Herstellung von therapeutisch wertvollen Substanzen oder als Zwischenprodukt für die Gewinnung von solchen verwendet werden.
<I>Beispiel:</I> 45-3-Oxy-ätio-cholensäure wird in bekann ter Weise acetyliert. 1 Teil d'-3-Acetoxy- ätio-cholensäure (Smp. 2421 korr.) werden in 10 Teilen Benzol gelöst und mit 4 Teilen Thionylchlorid vorsichtig gekocht. Nach etwa 2 Stunden ist die Entwicklung von Chlor wasserstoff und Schwefeldioxyd beendigt.
Falls sich sahwerlösliche Kristalle ausge schieden haben, so werden dieselben ent fernt; sie stellen das Arrhydrid der ace- tylierten Säure dar und können durch Ver- seifung und Acetylierung wieder in Ausgangs produkt umgewandelt werden. Die Be zol- lösung wird im Vakuum eingedampft und der Rückstand in 20 Teilen trockenem reinem gylol gelöst.
Nach Zusatz von 1 Teil Palla- diumbarium-sulfat (enthaltend etwa 2 Palladium) wird in der Siedehitze unter Rück fluss gereinigtes trockenes Wasserstoffgas eingeleitet und die abziehenden Gase durch Wasser geleitet, das etwas Methy l-orange enthält. Dran gibt Natronlauge allmählich zu und bestimmt so die Menge des abge spalteten Chlorwasserstoffes. Nachdem etwa 50 % der berechneten Menge abgespalten ist wird der Versuch abgebrochen.
Man fil triert, engt die Lösung im Vakuum auf ein kleines Volumen ein, gibt eine Mischung gleicher Teile Dioxan und 20 /oiger Schwe felsäure zu und kocht eine Stunde unter Rückfluss. Hierauf wird unter mehrmaligem Zusatz von Wasser das Dioxan im Vakuum möglichst entfernt, das Reaktionsprodukt mit Äther ausgeschüttelt und aus der Ätherlösung durch Ausziehen mit Soda die nicht in Re aktion getretene Säure (als freie Oxysäure vom Schmelzpunkt<B>2801</B> korr. unter Zer setzung) zurückgewonnen. Sie kann für einen neuen Ansatz dienen.
Aus dem Neutralpro- dukt kann direkt oder nach Reinigung über die Bisulfitverbindung oder das Semicarbazon in üblicher Weise das d5-3-Oxy-17-formyl- ätio-cholen gewonnen werden, welches sich aus Äther-Pentan umkristallisieren lässt.
Process for the preparation of an aldehyde of the Cyclopentanopoly- hydrophenanthr en series. It has been found that a 17-formyl-cyclopentanopolyhydrophenanthrene can be obtained if the substituted carboxyl group is converted into the aldehyde group with the aid of reducing agents in an acylated d5-3-oxy-etio-cholene halide and then with the hydrolyzing group Means treated.
The thus obtained d5-3-oxy-17-formyl-ätio-cholen of the formula
EMI0001.0014
forms crystals which can be recrystallized from ether pentane.
The reduction according to the process can be carried out by known methods. In this regard, reference is made, for example, to the manual "The Methods of Organic Chemistry" by Houben-Weyl, 3rd Edition, Volume II, pages 287-293. For example, the procedure is to catalytically reduce the starting material. The product is then subjected to an hydrolysis. The reaction can for example for. the following example can be formulated as follows:
EMI0001.0020
The new compound is intended to be used for the production of therapeutically valuable substances or as an intermediate product for the production of such.
<I> Example: </I> 45-3-oxy-etio-cholenic acid is acetylated in a known manner. 1 part d'-3-acetoxy-ätio-cholenic acid (mp. 2421 corr.) Is dissolved in 10 parts of benzene and carefully boiled with 4 parts of thionyl chloride. After about 2 hours, the evolution of hydrogen chloride and sulfur dioxide is complete.
If vision-soluble crystals have separated out, they are removed; They represent the anhydride of the acetylated acid and can be converted back into the starting product by saponification and acetylation. The benzene solution is evaporated in vacuo and the residue is dissolved in 20 parts of dry, pure glycol.
After adding 1 part of palladium barium sulfate (containing about 2 palladium), purified dry hydrogen gas is introduced at the boiling point under reflux and the gases drawn off are passed through water containing a little methyl orange. Sodium hydroxide solution is gradually added to it and thus determines the amount of hydrogen chloride split off. After about 50% of the calculated amount has split off, the experiment is terminated.
It is filtered, the solution is concentrated in vacuo to a small volume, a mixture of equal parts of dioxane and 20% sulfuric acid is added and the mixture is refluxed for one hour. Then, with repeated addition of water, the dioxane is removed in vacuo if possible, the reaction product is shaken out with ether and the acid that has not reacted (as free oxy acid with melting point 2801 corr. recovered with decomposition). It can serve for a new approach.
The α5-3-oxy-17-formylethio-cholene, which can be recrystallized from ether-pentane, can be obtained from the neutral product directly or after purification via the bisulfite compound or the semicarbazone in the usual way.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH207497T | 1937-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH207497A true CH207497A (en) | 1939-11-15 |
Family
ID=4445569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH207497D CH207497A (en) | 1937-07-25 | 1937-07-25 | Process for the preparation of an aldehyde of the cyclopentanopolyhydrophenanthrene series. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH207497A (en) |
-
1937
- 1937-07-25 CH CH207497D patent/CH207497A/en unknown
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