CN109627273A - A kind of synthetic method of -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of furazabol intermediate androstane - Google Patents

A kind of synthetic method of -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of furazabol intermediate androstane Download PDF

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CN109627273A
CN109627273A CN201811476349.7A CN201811476349A CN109627273A CN 109627273 A CN109627273 A CN 109627273A CN 201811476349 A CN201811476349 A CN 201811476349A CN 109627273 A CN109627273 A CN 109627273A
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ketone
androstane
methyl
alpha
beta
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廖俊
曾建华
刘玉亭
付林
李桂莲
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HUAZHONG PHARMACEUTICAL CO Ltd
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HUAZHONG PHARMACEUTICAL CO Ltd
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J1/00Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane
    • C07J1/0003Androstane derivatives
    • C07J1/0033Androstane derivatives substituted in position 17 alfa and 17 beta
    • C07J1/0037Androstane derivatives substituted in position 17 alfa and 17 beta the substituent in position 17 alfa being a saturated hydrocarbon group

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  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

The present invention provides a kind of synthetic method of -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of furazabol intermediate androstane, and this method is with 4-AD (abbreviation 4AD) for raw material, is etherified by 3 ketone group alkene, 17 ketone group grignard additions;Then the catalytic hydrogenation reaction for first carrying out 5 ethylene linkages without sour water solution after grignard addition, finally carries out 3 alkene ethers again and -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of compound androstane, 99.0% or more HPLC purity is prepared in 17 double hydrolysis.The method of the present invention route is brief, and production technology is easy to control, environmental-friendly, and production cost is low, is suitble to industrial scale production.

Description

A kind of conjunction of -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of furazabol intermediate androstane At method
Technical field
The present invention relates to a kind of synthetic methods of medicine intermediate, male more particularly to a kind of furazabol intermediate The synthetic method of -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of steroid.
Background technique
Furazabol (parallel (2, the 3-C) furazan of-17-5 α of beta-hydroxy of 17 Alpha-Methyl-androstane) also known as furazabol, Fu La Miscellaneous vigorous (Furazabol), structural formula are as follows:
Furazabol is protein anabolic hormone class drug, can promote the synthesis of vivo protein and it is inhibited to decompose generation It thanks, while there is effect for reducing blood fat, be suitable for hyperlipidemia and atherosclerosis.Furazabol intermediate androstane -17 The traditional synthesis technology of -17 beta-hydroxy -3- ketone of Alpha-Methyl be using Chinese yam saponin as raw material, by open loop, acylation, oxidation, hydrolysis, The reactions such as elimination obtain diene, and diene obtains table hero through reactions such as oximate, Beckmann rearrangement, sour water solution, basic hydrolysis, catalytic hydrogenations Then target product is prepared through grignard, addition, oxidation reaction in ketone.Conventional method step is long, multistep chromic anhydride in process route Oxidation reaction can be generated containing a large amount of Cr6+And Cr3+Reluctant industrial wastewater, to manufacturing enterprise production bring it is very big Environmental protection pressure.The factors such as reduction and national environmental protection policy, restraint of trade due to medicine source plant resource (yellow ginger) cultivated area influence soap The price of element and diene constantly rises violently, and cost of material is high, status in short supply causes -17 β of -17 Alpha-Methyl of androstane - The production cost of hydroxyl -3- ketone increases substantially with the market price, to including furazabol, adroyd, mesterolone, stanozolol The world market of hormonal medicaments including alcohol etc. produces significant impact.
It is using cheap and easy to get with 4-AD (abbreviation 4AD) that saponin, diene are all steroidal compounds critical materials Soybean oil by-product carry out microorganism conversion preparation.The raw material is since manufacturing enterprise is numerous, and supply is very sufficient, and price is only Half of diene or so, and avoid pollution of chromium.The inexpensive 4AD easily purchased is got over as the application of steroid hormone drug critical materials To be more taken seriously.
CN107417753A uses 4AD as alternative materials, through 17 ketone groups of acetone cyanohydrin or Cymag selective protection Key intermediate cyanalcohol object, again through ethylene ketal, basic hydrolysis, catalytic hydrogenation, grignard addition, sour water solution and etc. made Standby, synthesis route is as follows:
Above-mentioned process route is had biggish using being prepared by sterol through the 4-AD that microbial fermentation obtains Cost advantage, process route is simple, raw material 4-AD is in liberal supply, but can produce in the synthesis of key intermediate cyanalcohol object Give birth to a large amount of cyanide containing wastewaters, the cyanide ion concentration about 500-800ppm in the industrial wastewater.Due to having containing cyanogen compound The industrial wastewater containing cyanide of hypertoxic characteristic, formation must be handled strictly, could be discharged after up to standard.According to national emission standard, The Cyanide in Waste Water ion concentration of discharge must not exceed 5ppm, and processing difficulty is very big, and the immense pressure of environmental protection of enterprise processing restricts Application of the process route in industrialized production.
CN107312051A is equally using 4AD as alternative materials, but changes process route and be etherified through 3- ketone groups Protection, grignard addition, catalytic hydrogenation, sour water solution and etc. prepared, synthesis route is as follows:
3 ketone group alkene etherification protections, 17 ketone group grignard additions, 5 ethylene linkage catalysis are passed through with 4AD raw material in above-mentioned technique road Add hydrogen, prepared by acidolysis four-step reaction, synthetic route is avoided without the cyano protection of 17 ketone groups containing cyanide ion play The difficulty of malicious discharge of wastewater and processing.But the compound containing 3 ketone group alkene etherificate structures is all unstable, to moisture, acid-sensitive, holds Facile hydrolysis is at ketenes.3- ethyoxyl-androstane -3,5- diene -17- ketone in the drying process, places just part quickly in air It is converted into 4AD.It especially needs to be added hydrochloric acid in 17 ketone group grignard addition last handling processes of the process route and carries out 17 Acidolysis reaction obtains 17 hydroxyls, and very unstable in acid condition containing 3 ketone group alkene etherification protection compounds, in the acidity item It is difficult to control under part and only carries out 17 acidolysis reactions, and the deprotection reaction without 3 ketone group alkene etherificate.Occur 17 at the same time Position acidolysis and 3 ketone group alkene are etherified in de-protected situation, are continued lower step catalytic hydrogenation and are easy in target product hero The isomerism impurity with 5 β H structures is introduced in -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of steroid, the impurity and product polarity are extremely It is close, be difficult to remove, thus finally influence product purity.
Summary of the invention
The present invention provides a kind of synthetic method of -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of furazabol intermediate androstane, So as to overcome the above-mentioned drawbacks in the prior art.Synthetic route of the invention is as follows:
The technical scheme is that being etherified by 3 ketone group alkene, 17 with 4-AD (abbreviation 4AD) for raw material Ketone group grignard addition;Then the catalytic hydrogenation reaction of 5 ethylene linkages is first carried out without sour water solution after grignard addition, finally again It carries out 3 alkene ethers and -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of compound androstane is prepared in 17 double hydrolysis.
Method of the invention specifically includes the following steps:
Step is (1): 4-AD and triethyl orthoformate, dehydrated alcohol are subjected to etherification reaction in the presence of catalyst for etherification, Compound 3- ethyoxyl-androstane -3,5- diene -17- ketone is prepared;
Step is (2): magnesium chips being put into tetrahydrofuran, ether or 2- methyltetrahydrofuran and is heated up, is then slowly added into methyl halogenated Grignard Reagent is made until magnesium chips reacts disappearance completely in alkane, cools down spare;By 3- ethyoxyl-androstane -3,5- diene -17- ketone It is dissolved in organic solvent, then the solution is added dropwise in aforementioned Grignard Reagent and brings it about grignard addition reaction, after dripping, Heat preservation addition reaction is carried out, most of solvent is removed, water is added dropwise, filters, wash, being dried to obtain grignard object;
Step is (3): grignard object being added dropwise to the methanol solution regulation system pH value of alkali in the mixed solvent, then in palladium carbon catalyst Under the action of carry out catalytic hydrogenation reaction, end of reaction filters out catalyst, and gained filtrate is the solution of hydride.Without out Material process, the purification hydrochloric acid that mass percent concentration >=35% is added dropwise into the solution of hydride carry out heat preservation hydrolysis, water again Solution reaction terminates, and removes solvent, and filtering washes, is dry, being refining to obtain -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of androstane, and HPLC is pure 99.0% or more degree.
A kind of synthetic method of -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of furazabol intermediate androstane, it is characterized in that:
Step (1) described in catalyst for etherification be pyridine hydrochloride or bromine hydracid pyridine, etherification reaction temperature be 30~50 DEG C;4- Androstenedione: triethyl orthoformate: dehydrated alcohol: the proportion of catalyst for etherification is 1W:0.5V~1.0V:0.9V~1.2V: 0.015W~0.020W, wherein W represents g, V and represents ml;
Step (2) described in methyl halogenated alkane select chloromethanes, bromomethane or iodomethane, dissolved compound 3- ethyoxyl-hero Organic solvent selection tetrahydrofuran, toluene or the 2- methyltetrahydrofuran of steroid -3,5- diene -17- ketone, 3- ethyoxyl-androstane -3, 5- diene -17- ketone: the proportion of magnesium chips is 1W:0.4W~0.6W;
Step (3) described in mixed solvent be methanol dichloromethane, the volume ratio of in the mixed solvent methanol and methylene chloride is 1V:0.2~0.3V, alkali are sodium hydroxide or potassium hydroxide, and the pH value range for adding alkali to adjust is 7.5~9.0;Catalytic hydrogenation reaction Temperature is 25~40 DEG C;Hydrolysis holding temperature is 30~40 DEG C;Grignard object: mixed solvent: palladium carbon catalyst: sour proportion For 1W:25V~30V:0.1W~0.3W:0.5W~1.0W, wherein W represents g, V and represents ml.
Further, the preferable technical solution of the present invention is:
(1) middle etherification reaction temperature is 35~45 DEG C to step;4-AD: triethyl orthoformate: dehydrated alcohol: etherificate catalysis The proportion of agent is 1W:0.6V:1.0V:0.020W, and wherein W represents g, V and represents ml;
Step (2) in methyl halogenated alkane be chloromethanes, dissolved compound 3- ethyoxyl-androstane -3,5- diene -17- ketone is organic molten Agent is tetrahydrofuran, and 3- ethyoxyl-androstane -3,5- diene -17- ketone: the proportion of magnesium chips is 1W:0.45W;
Step (3) in mixed solvent methanol dichloromethane the volume ratio of methanol and methylene chloride be 1V:0.2V, add alkali to adjust PH value range is 8.0~8.5, and catalytic hydrogenation reaction temperature is 30~35 DEG C;Hydrolysis holding temperature is 35~40 DEG C;Grignard Object: mixed solvent: palladium carbon catalyst: sour proportion is 1W:30V:0.2W:0.8W, and wherein W represents g, V and represents ml.
The beneficial effects of the present invention are: using 4-AD cheap and easy to get for raw material, both avoided in process route Largely severe toxicity containing cyanide ion discharge of wastewater and processing are not easy problem up to standard, do not in turn avoid originally in acid condition very not Stable should be in acid condition without this technique extremely rambunctious of reaction containing 3 ketone group alkene etherificate structural compounds Route defect.The method of the present invention route is brief, and production technology is easy to control, environmental-friendly, and production cost is low, is suitble to commercial scale Metaplasia produces.
Specific embodiment
The present invention is made for example, these examples are intended to help to understand technological means of the invention of example below.But It should be understood that these embodiments are only exemplary, the present invention is not limited thereto.Palladium carbon catalyst is common according to its effective content Specification has 1%~5%, and the specification of the palladium carbon catalyst used in the embodiment of the present invention is 2%, if selecting other specifications can be by effective Content converts dosage.
Embodiment one
1, prepare compound 3- ethyoxyl-androstane -3,5- diene -17- ketone
100g 4-AD, 60ml triethyl orthoformate, 100ml dehydrated alcohol are added into reaction flask, finishes 30 points of stirring Then 2.0g bromine hydracid pyridine is added in clock, heat up in 35 DEG C~45 DEG C heat preservations, 6 hours progress etherification reactions;To end of reaction, drop Temperature is to 5 DEG C hereinafter, dropwise addition triethylamine tune pH value finishes stirring 1 hour to 7.0~7.5;0 DEG C is cooled to hereinafter, filtering, drying Obtain 104.9g compound 3- ethyoxyl-androstane -3,5- diene -17- ketone.
2, grignard object is prepared
600ml tetrahydrofuran, 47.2g magnesium chips, 0.2g iodine grain are added into reaction flask, stirring is warming up to 40 DEG C, starts from 40 DEG C ~45 DEG C are slowly passed through chloromethanes until magnesium chips reacts disappearances completely, continue at 40 DEG C~45 DEG C insulation reaction 1 hour, obtained lattice Family name's reagent, be cooled to 10 DEG C or less it is spare;
300ml tetrahydrofuran is added in the 104.9g compound 3- ethyoxyl that upper step is reacted-androstane -3,5- diene -17- ketone In, it stirs 5 minutes and dissolves, 3- ethyoxyl-androstane -3,5- diene -17- ketone tetrahydrofuran solution is added dropwise to above-mentioned format and is tried In agent, 10 DEG C~15 DEG C of dropping temperature are controlled.After dripping, 40 DEG C~45 DEG C progress additions insulation reaction 12 hours are continued at, End of reaction, normal pressure concentration, the residual paste being concentrated to get cool down, are added into concentrated residues paste and are cooled in advance 0 DEG C~5 DEG C of water finishes and continues stirring 2 hours, stand 2 hours or more, it filters, wash, being dried to obtain 120.0g grignard object.
3, -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of prepare compound androstane
25g grignard object, 625ml methanol, 125ml methylene chloride are added into reaction flask, potassium hydroxide is added dropwise after mixing evenly Methanol solution adjusts pH value to 8.0~8.5, and the palladium charcoal of 5g palladium content 2% is added, is done the air displacement in reaction flask with hydrogen Only, hydrogen is passed through in 30 DEG C~35 DEG C to react 10 hours;To end of reaction, the hydrogen in reaction flask is replaced completely with nitrogen, The solution of hydride is obtained by filtration;
The purification hydrochloric acid that 20g mass percent concentration >=35.0% is added in the lower solution to hydride is stirred at room temperature, in 35 DEG C ~40 DEG C carry out heat preservation hydrolysis 3 hours;To end of reaction, 5 DEG C are cooled to hereinafter, the hydrogen of mass percent concentration 5% is added dropwise It aoxidizes aqueous solutions of potassium and adjusts pH value to 6.0~7.0, after evaporated under reduced pressure solvent, be cooled to 5 DEG C hereinafter, to be slowly added into 800ml pure Water continues to be cooled to 5 DEG C hereinafter, standing 2 hours or more, filtering, washing, obtaining -17 Alpha-Methyl -17 of androstane after stirring 30 minutes Beta-hydroxy -3- ketone crude product wet feed.Crude product is recrystallized to give to -17 beta-hydroxy of -17 Alpha-Methyl of 17.2g androstane-in industrial alcohol 3- ketone, HPLC purity 99.6%.
Embodiment two
1, prepare compound 3- ethyoxyl-androstane -3,5- diene -17- ketone
100g 4-AD, 50ml triethyl orthoformate, 120ml dehydrated alcohol are added into reaction flask, finishes 30 points of stirring Then 1.5g bromine hydracid pyridine is added in clock, heat up in 40 DEG C~50 DEG C heat preservations, 7 hours progress etherification reactions;To end of reaction, drop Temperature is to 5 DEG C hereinafter, dropwise addition triethylamine tune pH value finishes stirring 1 hour to 7.0~7.5;0 DEG C is cooled to hereinafter, filtering, drying Obtain 103.5g compound 3- ethyoxyl-androstane -3,5- diene -17- ketone.
2, grignard object is prepared
560ml2- methyltetrahydrofuran, 62.1g magnesium chips, 0.2g iodine grain are added into reaction flask, stirring is warming up to 40 DEG C, starts Slowly be passed through in 40 DEG C~45 DEG C bromomethane until magnesium chips react disappearance completely, continue at 40 DEG C~45 DEG C insulation reaction 1 hour, Be made Grignard Reagent, be cooled to 10 DEG C or less it is spare;
300ml2- methyl four is added in the 103.5g compound 3- ethyoxyl that upper step is reacted-androstane -3,5- diene -17- ketone In hydrogen furans, stirs 5 minutes and dissolve, 3- ethyoxyl-androstane -3,5- diene -17- ketone 2- methyltetrahydrofuran solution is added dropwise Enter in above-mentioned grignard reagent, controls 10 DEG C~15 DEG C of dropping temperature.After dripping, 40 DEG C~45 DEG C progress addition heat preservations are continued at Reaction 10 hours, end of reaction, normal pressure concentration, the residual paste being concentrated to get cools down, into concentrated residues paste The preparatory water for being cooled to 0 DEG C~5 DEG C is added, finishes and continues stirring 2 hours, stand 2 hours or more, it filters, wash, be dried to obtain 117.6g grignard object.
3, -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of prepare compound androstane
30g grignard object, 600ml methanol, 150ml methylene chloride are added into reaction flask, sodium hydroxide is added dropwise after mixing evenly Methanol solution adjusts pH value to 8.5~9.0, and the palladium charcoal of 9g palladium content 2% is added, is done the air displacement in reaction flask with hydrogen Only, hydrogen is passed through in 25 DEG C~30 DEG C to react 9 hours;To end of reaction, the hydrogen in reaction flask is replaced to clean, mistake with nitrogen Filter obtains the solution of hydride;
The purification hydrochloric acid that 15g mass percent concentration >=35.0% is added in the lower solution to hydride is stirred at room temperature, in 35 DEG C ~40 DEG C carry out heat preservation hydrolysis 3 hours;To end of reaction, 5 DEG C are cooled to hereinafter, the hydrogen of mass percent concentration 5% is added dropwise Aqueous solution of sodium oxide adjusts pH value to 6.0~7.0, after evaporated under reduced pressure solvent, is cooled to 5 DEG C hereinafter, to be slowly added into 800ml pure Water continues to be cooled to 5 DEG C hereinafter, standing 2 hours or more, filtering, washing, obtaining -17 Alpha-Methyl -17 of androstane after stirring 30 minutes Beta-hydroxy -3- ketone crude product wet feed.Crude product is recrystallized to give to -17 beta-hydroxy of -17 Alpha-Methyl of 20.6g androstane-in industrial alcohol 3- ketone, HPLC purity 99.3%.
Embodiment three
1, prepare compound 3- ethyoxyl-androstane -3,5- diene -17- ketone
100g 4-AD, 100ml triethyl orthoformate, 90ml dehydrated alcohol are added into reaction flask, finishes 30 points of stirring Then 2g pyridine hydrochloride is added in clock, heat up in 30 DEG C~40 DEG C heat preservations, 9 hours progress etherification reactions;To end of reaction, it is cooled to 5 DEG C hereinafter, dropwise addition triethylamine tune pH value finishes stirring 1 hour to 7.0~7.5;0 DEG C is cooled to hereinafter, filtering, being dried to obtain 102.0g compound 3- ethyoxyl-androstane -3,5- diene -17- ketone.
2, grignard object is prepared
600ml ether, 40.8g magnesium chips are added into reaction flask, stirring is warming up to 30 DEG C, starts from 30 DEG C~32 DEG C and be slowly added dropwise Iodomethane continues back flow reaction 1 hour, obtained Grignard Reagent until magnesium chips reacts disappearances completely, be cooled to 10 DEG C or less it is spare;
The 102.0g compound 3- ethyoxyl that upper step is reacted-androstane -3,5- diene -17- ketone is added in 400ml toluene, It stirs 5 minutes and dissolves, 3- ethyoxyl-androstane -3,5- diene -17- ketone toluene solution is added dropwise in above-mentioned grignard reagent, control 10 DEG C~15 DEG C of dropping temperature processed.After dripping, 30 DEG C~35 DEG C progress additions insulation reaction 24 hours are continued at, have been reacted Finish, normal pressure concentration, the residual paste being concentrated to get cools down, and is added into concentrated residues paste and is cooled to 0 DEG C~5 in advance DEG C water, finish and continue stirring 2 hours, stand 2 hours or more, filter, wash, being dried to obtain 116.5g grignard object.
3, -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of prepare compound androstane
25g grignard object, 625ml methanol, 125ml methylene chloride are added into reaction flask, potassium hydroxide is added dropwise after mixing evenly Methanol solution adjusts pH value to 7.5~8.0, and the palladium charcoal of 2.5g palladium content 2% is added, with hydrogen by the air displacement in reaction flask Completely, hydrogen is passed through in 35 DEG C~45 DEG C to react 12 hours;To end of reaction, the hydrogen in reaction flask is replaced with nitrogen and is done Only, the solution of hydride is obtained by filtration;
The purification hydrochloric acid that 25g mass percent concentration >=35.0% is added in the lower solution to hydride is stirred at room temperature, in 30 DEG C ~35 DEG C carry out heat preservation hydrolysis 3 hours;To end of reaction, 5 DEG C are cooled to hereinafter, the hydrogen of mass percent concentration 5% is added dropwise Aqueous solution of sodium oxide adjusts pH value to 6.0~7.0, after evaporated under reduced pressure solvent, is cooled to 5 DEG C hereinafter, to be slowly added into 800ml pure Water continues to be cooled to 5 DEG C hereinafter, standing 2 hours or more, filtering, washing, obtaining -17 Alpha-Methyl -17 of androstane after stirring 30 minutes Beta-hydroxy -3- ketone crude product wet feed.Crude product is recrystallized to give to -17 beta-hydroxy of -17 Alpha-Methyl of 17.0g androstane-in industrial alcohol 3- ketone, HPLC purity 99.5%.

Claims (7)

1. a kind of synthetic method of -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of furazabol intermediate androstane, which is characterized in that
With 4-AD (abbreviation 4AD) for raw material, it is etherified by 3 ketone group alkene, 17 ketone group grignard additions;Then in grignard The catalytic hydrogenation reaction for first carrying out 5 ethylene linkages after addition without sour water solution finally carries out 3 alkene ethers and 17 double hydrolysis again - 17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of compound androstane is prepared;
Step is (1): 4-AD and triethyl orthoformate, dehydrated alcohol are subjected to etherification reaction in the presence of catalyst for etherification, Compound 3- ethyoxyl-androstane -3,5- diene -17- ketone is prepared;
Step is (2): magnesium chips being put into tetrahydrofuran, ether or 2- methyltetrahydrofuran and is heated up, is then slowly added into methyl halogenated Grignard Reagent is made until magnesium chips reacts disappearance completely in alkane, cools down spare;By 3- ethyoxyl-androstane -3,5- diene -17- ketone It is dissolved in organic solvent, then the solution is added dropwise in aforementioned Grignard Reagent and brings it about grignard addition reaction, after dripping, Heat preservation addition reaction is carried out, most of solvent is removed, water is added dropwise, filters, wash, being dried to obtain grignard object;
Step is (3): grignard object being added dropwise to the methanol solution regulation system pH value of alkali in the mixed solvent, then in palladium carbon catalyst Under the action of carry out catalytic hydrogenation reaction, end of reaction filters out catalyst, and gained filtrate is the solution of hydride, without going out Material process, the purification hydrochloric acid that mass percent concentration >=35% is added dropwise into the solution of hydride carry out heat preservation hydrolysis, water again Solution reaction terminates, and removes solvent, and filtering washes, is dry, being refining to obtain -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of androstane, and HPLC is pure 99.0% or more degree.
2. a kind of synthesis side of -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of furazabol intermediate androstane according to claim 1 Method, which is characterized in that step (1) described in catalyst for etherification be pyridine hydrochloride or bromine hydracid pyridine, etherification reaction temperature 30 ~50 DEG C;4-AD: triethyl orthoformate: dehydrated alcohol: the proportion of catalyst for etherification is 1W:0.5V~1.0V:0.9V ~1.2V:0.015W~0.020W, wherein W represents g, V and represents ml.
3. a kind of synthesis side of -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of furazabol intermediate androstane according to claim 2 Method, which is characterized in that (1) middle etherification reaction temperature is 35~45 DEG C to step;4-AD: triethyl orthoformate: anhydrous second Alcohol: the proportion of catalyst for etherification is 1W:0.6V:1.0V:0.020W, and wherein W represents g, V and represents ml.
4. a kind of synthesis side of -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of furazabol intermediate androstane according to claim 1 Method, which is characterized in that step (2) described in methyl halogenated alkane select chloromethanes, bromomethane or iodomethane, dissolved compound 3- Ethyoxyl-androstane -3,5- diene -17- ketone organic solvent selects tetrahydrofuran, toluene or 2- methyltetrahydrofuran, 3- ethoxy Base-androstane -3,5- diene -17- ketone: the proportion of magnesium chips is 1W:0.4W~0.6W.
5. a kind of synthesis side of -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of furazabol intermediate androstane according to claim 4 Method, which is characterized in that step (2) in methyl halogenated alkane be chloromethanes, dissolved compound 3- ethyoxyl-androstane -3,5- diene -17- The organic solvent of ketone is tetrahydrofuran, and 3- ethyoxyl-androstane -3,5- diene -17- ketone: the proportion of magnesium chips is 1W:0.45W.
6. a kind of synthesis side of -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of furazabol intermediate androstane according to claim 1 Method, which is characterized in that step (3) described in mixed solvent be methanol dichloromethane, in the mixed solvent methanol and methylene chloride Volume ratio be 1V:0.2~0.3V, alkali be sodium hydroxide or potassium hydroxide, add alkali adjust pH value range be 7.5~9.0;It urges Changing hydrogenation reaction temperature is 25~40 DEG C;Hydrolysis holding temperature is 30~40 DEG C;Grignard object: mixed solvent: palladium charcoal catalysis Agent: sour proportion is 1W:25V~30V:0.1W~0.3W:0.5W~1.0W, and wherein W represents g, V and represents ml.
7. a kind of synthesis side of -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of furazabol intermediate androstane according to claim 6 Method, which is characterized in that step (3) in mixed solvent methanol dichloromethane the volume ratio of methanol and methylene chloride be 1V:0.2V, The pH value range for adding alkali to adjust is 8.0~8.5, and catalytic hydrogenation reaction temperature is 30~35 DEG C;Hydrolysis holding temperature is 35 ~40 DEG C;Grignard object: mixed solvent: palladium carbon catalyst: sour proportion is 1W:30V:0.2W:0.8W, and wherein W represents g, V representative ml。
CN201811476349.7A 2018-12-05 2018-12-05 A kind of synthetic method of -17 beta-hydroxy -3- ketone of -17 Alpha-Methyl of furazabol intermediate androstane Pending CN109627273A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
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CN110563788A (en) * 2019-09-24 2019-12-13 华中药业股份有限公司 preparation method of 5 alpha-androstane-3, 17-dione
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CN110563787A (en) * 2019-09-24 2019-12-13 华中药业股份有限公司 preparation method of 5 alpha-androstane-17-hydroxy-3-ketone

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