hebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and developm
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inquiryZibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi
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inquiryfactory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B
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inquiryShandong Mopai Biotechnology Co., LTD is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. W
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inquiryGOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation
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inquiryAnsciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali
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inquiryMethyl 4-aza-5alpha-Androsta-3-one-17beta-CarboxylateAppearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:pharmaceutical intermediate Transportation:by air, by sea, by express
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inquiry3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
With palladium 10% on activated carbon; hydrogen; acetic acid at 20 - 80℃; under 3750.38 - 4500.45 Torr; for 12h; Inert atmosphere; Industrial scale; | 94.7723% |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid
2,2-dimethoxy-propane
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
With hydrogenchloride In methanol for 2h; Heating; | |
With hydrogenchloride In methanol at 20℃; for 3h; Reflux; |
methyl 3-oxo-4-aza-5α-androst-1-ene-17β-carboxylate
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
With hydrogen; palladium 10% on activated carbon In dichloromethane |
3,20-dioxo-4-aza-pregnan-5-ene
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: hydrogen; palladium 10% on activated carbon; triethylamine / 6225.62 Torr 2: sodium hydroxide; bromine / water; 1,4-dioxane / 3 h / 5 - 7 °C 3: hydrogenchloride / methanol / 3 h / 20 °C / Reflux View Scheme |
C20H31NO3
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: toluene-4-sulfonic acid / methanol / 0.58 h 2: hydrogen; palladium 10% on activated carbon; triethylamine / 6225.62 Torr 3: sodium hydroxide; bromine / water; 1,4-dioxane / 3 h / 5 - 7 °C 4: hydrogenchloride / methanol / 3 h / 20 °C / Reflux View Scheme |
3,20-dioxo-4-aza-5α-pregnane
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: sodium hydroxide; bromine / water; 1,4-dioxane / 3 h / 5 - 7 °C 2: hydrogenchloride / methanol / 3 h / 20 °C / Reflux View Scheme |
Progesterone
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 7 steps 1: potassium carbonate; sodium periodate; potassium permanganate / tert-butyl alcohol; water / 1 h / 50 °C 2: triethylamine / tetrahydrofuran / 2 h / -5 - -2 °C / Inert atmosphere 3: ammonium acetate / tetrahydrofuran / 1 h / Reflux; Inert atmosphere 4: hydrogenchloride / water; tetrahydrofuran / 1 h / -15 - 0 °C 5: hydrogen; palladium 10% on activated carbon; triethylamine / 6225.62 Torr 6: sodium hydroxide; bromine / water; 1,4-dioxane / 3 h / 5 - 7 °C 7: hydrogenchloride / methanol / 3 h / 20 °C / Reflux View Scheme | |
Multi-step reaction with 7 steps 1: potassium carbonate; sodium periodate; potassium permanganate / tert-butyl alcohol; water / 1 h / 50 °C 2: triethylamine / tetrahydrofuran / 2 h / -5 - -2 °C / Inert atmosphere 3: ammonia / methanol / 0.5 h / 0 - 25 °C 4: toluene-4-sulfonic acid / methanol / 0.58 h 5: hydrogen; palladium 10% on activated carbon; triethylamine / 6225.62 Torr 6: sodium hydroxide; bromine / water; 1,4-dioxane / 3 h / 5 - 7 °C 7: hydrogenchloride / methanol / 3 h / 20 °C / Reflux View Scheme |
3,5-seco-4-norpregn-5,20-dion-3-carboxylic acid
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: triethylamine / tetrahydrofuran / 2 h / -5 - -2 °C / Inert atmosphere 2: ammonium acetate / tetrahydrofuran / 1 h / Reflux; Inert atmosphere 3: hydrogenchloride / water; tetrahydrofuran / 1 h / -15 - 0 °C 4: hydrogen; palladium 10% on activated carbon; triethylamine / 6225.62 Torr 5: sodium hydroxide; bromine / water; 1,4-dioxane / 3 h / 5 - 7 °C 6: hydrogenchloride / methanol / 3 h / 20 °C / Reflux View Scheme | |
Multi-step reaction with 6 steps 1: triethylamine / tetrahydrofuran / 2 h / -5 - -2 °C / Inert atmosphere 2: ammonia / methanol / 0.5 h / 0 - 25 °C 3: toluene-4-sulfonic acid / methanol / 0.58 h 4: hydrogen; palladium 10% on activated carbon; triethylamine / 6225.62 Torr 5: sodium hydroxide; bromine / water; 1,4-dioxane / 3 h / 5 - 7 °C 6: hydrogenchloride / methanol / 3 h / 20 °C / Reflux View Scheme |
3,5-seco-4-norpregn-5,20-dioxo-3-(ethoxycarbonyl)carboxylate
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: ammonium acetate / tetrahydrofuran / 1 h / Reflux; Inert atmosphere 2: hydrogenchloride / water; tetrahydrofuran / 1 h / -15 - 0 °C 3: hydrogen; palladium 10% on activated carbon; triethylamine / 6225.62 Torr 4: sodium hydroxide; bromine / water; 1,4-dioxane / 3 h / 5 - 7 °C 5: hydrogenchloride / methanol / 3 h / 20 °C / Reflux View Scheme | |
Multi-step reaction with 5 steps 1: ammonia / methanol / 0.5 h / 0 - 25 °C 2: toluene-4-sulfonic acid / methanol / 0.58 h 3: hydrogen; palladium 10% on activated carbon; triethylamine / 6225.62 Torr 4: sodium hydroxide; bromine / water; 1,4-dioxane / 3 h / 5 - 7 °C 5: hydrogenchloride / methanol / 3 h / 20 °C / Reflux View Scheme |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: hydrogenchloride / water; tetrahydrofuran / 1 h / -15 - 0 °C 2: hydrogen; palladium 10% on activated carbon; triethylamine / 6225.62 Torr 3: sodium hydroxide; bromine / water; 1,4-dioxane / 3 h / 5 - 7 °C 4: hydrogenchloride / methanol / 3 h / 20 °C / Reflux View Scheme |
2,5-bis(trifluoromethyl)aniline
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
(5α,17β)-N-[2,5-bis(trifluoromethyl)-phenyl]-3-oxo-4-aza-5-androstane-17-carboxamide
Conditions | Yield |
---|---|
Stage #1: 3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester With boron tribromide In dichloromethane at 25℃; for 0.333333h; Stage #2: 2,5-bis(trifluoromethyl)aniline In dichloromethane at 50℃; | 93% |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
With I2; N-ethyl-N,N-diisopropylamine In dichloromethane; acetonitrile | 88% |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
methyl (2α,5α,17β)-2-iodo-3-oxo-4-aza-5-androstane-17-carboxylate
Conditions | Yield |
---|---|
Stage #1: 3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester With chloro-trimethyl-silane; N,N,N,N,-tetramethylethylenediamine In dichloromethane at -14 - 20℃; for 0.0833333h; Cooling with acetone-dry ice; Stage #2: With iodine In dichloromethane for 2h; Cooling with acetone-dry ice; | 87% |
With trimethylsilyl iodide; N,N,N,N,-tetramethylethylenediamine; iodine 1) CH2Cl2, -15 deg C, 15 min, 2) 0 deg C, 1.5 h; Yield given. Multistep reaction; | |
Stage #1: 3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester With chloro-trimethyl-silane; N,N,N,N,-tetramethylethylenediamine In dichloromethane at -10℃; for 0.5h; Inert atmosphere; Stage #2: With iodine In dichloromethane at -10 - 0℃; for 2h; | 24.8 g |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
diphenyldisulfane
Methyl 2-phenylsulphenyl-3-oxo-4-aza-5α-androstan-17β-carboxylate
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In dichloromethane | 38% |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
methyl 3-oxo-4-aza-5α-androst-1-ene-17β-carboxylate
Conditions | Yield |
---|---|
With bis(trimethylsilyl)trifluoroacetamide; 2,3-dicyano-5,6-dichloro-p-benzoquinone In 1,4-dioxane 20 deg C, 4 h. then 110 deg C, 18 h.; Yield given; | |
With benzeneseleninic anhydride In chlorobenzene for 4h; Heating; | 49.5 g |
With 2,2,2-trifluoro-N,N-bis(trimethylsilyl)-acetamide; 2,3-dicyano-5,6-dichloro-p-benzoquinone In toluene at 25 - 110℃; for 12h; Product distribution / selectivity; Inert atmosphere; |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
With Lawessons reagent In dichloromethane for 10h; Ambient temperature; Yield given; |
oxalyl dichloride
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
Stage #1: oxalyl dichloride; 3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester With pyridine In dichloromethane at -45 - -35℃; for 0.166667h; Stage #2: With N-ethyl-N,N-diisopropylamine In dichloromethane at -10℃; for 0.75h; |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
dihydro-finasteride
Conditions | Yield |
---|---|
With hydrogenchloride; n-butyllithium; tert-butylamine In tetrahydrofuran; n-heptane; water | 11.2 g (99.7%) |
Multi-step reaction with 2 steps 1: sodium hydroxide / methanol / 50 - 55 °C 2: benzotriazol-1-ol; dicyclohexyl-carbodiimide / methanol View Scheme |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
methyl iodide
methyl-3-oxo-4-methyl-4-aza-5α-androstane-17β-carboxylate
Conditions | Yield |
---|---|
With sodium chloride In N-methyl-acetamide; mineral oil |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
3-Oxo-4-aza-5α-androst-1-ene-17β-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: 2,3-dicyano-5,6-dichloro-p-benzoquinone; 2,2,2-trifluoro-N,N-bis(trimethylsilyl)-acetamide / toluene / 12 h / 25 - 110 °C / Inert atmosphere 2.1: sulfuric acid / 3 h / 20 - 30 °C 2.2: 1.5 h / 0 - 5 °C View Scheme | |
Multi-step reaction with 2 steps 1.1: N,N,N,N,-tetramethylethylenediamine; chloro-trimethyl-silane / dichloromethane / 0.5 h / -10 °C / Inert atmosphere 1.2: 2 h / -10 - 0 °C 2.1: potassium tert-butylate / N,N-dimethyl-formamide / 1.33 h / -15 °C 2.2: 2 h / 50 °C View Scheme |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: 2,3-dicyano-5,6-dichloro-p-benzoquinone; 2,2,2-trifluoro-N,N-bis(trimethylsilyl)-acetamide / toluene / 12 h / 25 - 110 °C / Inert atmosphere 2.1: sulfuric acid / 3 h / 20 - 30 °C 2.2: 1.5 h / 0 - 5 °C 3.1: thionyl chloride / dichloromethane / 0.5 h / 25 - 30 °C / Inert atmosphere View Scheme |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: 2,3-dicyano-5,6-dichloro-p-benzoquinone; 2,2,2-trifluoro-N,N-bis(trimethylsilyl)-acetamide / toluene / 12 h / 25 - 110 °C / Inert atmosphere 2.1: sulfuric acid / 3 h / 20 - 30 °C 2.2: 1.5 h / 0 - 5 °C 3.1: thionyl chloride / dichloromethane / 0.5 h / 25 - 30 °C / Inert atmosphere 4.1: boron trifluoride diethyl etherate / dichloromethane / 1 h / 25 - 30 °C 4.2: 12 h / 40 - 42 °C / Reflux View Scheme | |
Multi-step reaction with 4 steps 1.1: N,N,N,N,-tetramethylethylenediamine; chloro-trimethyl-silane / dichloromethane / 0.5 h / -10 °C / Inert atmosphere 1.2: 2 h / -10 - 0 °C 2.1: potassium tert-butylate / N,N-dimethyl-formamide / 1.33 h / -15 °C 2.2: 2 h / 50 °C 3.1: triethylamine / acetonitrile / 4 h / -7 - -5 °C / Inert atmosphere 4.1: boron trifluoride diethyl etherate / acetonitrile / 4 h / -15 - -8 °C View Scheme | |
Multi-step reaction with 4 steps 1.1: N,N,N,N,-tetramethylethylenediamine; chloro-trimethyl-silane / dichloromethane / 0.5 h / -10 °C / Inert atmosphere 1.2: 2 h / -10 - 0 °C 2.1: potassium tert-butylate / N,N-dimethyl-formamide / 1.33 h / -15 °C 2.2: 2 h / 50 °C 3.1: 1,8-diazabicyclo[5.4.0]undec-7-ene / acetonitrile / 0.25 h / -20 °C 4.1: boron trifluoride diethyl etherate / acetonitrile / 4 h / 76 - 78 °C View Scheme | |
Multi-step reaction with 4 steps 1.1: N,N,N,N,-tetramethylethylenediamine; chloro-trimethyl-silane / dichloromethane / 0.5 h / -10 °C / Inert atmosphere 1.2: 2 h / -10 - 0 °C 2.1: potassium tert-butylate / N,N-dimethyl-formamide / 1.33 h / -15 °C 2.2: 2 h / 50 °C 3.1: 1,8-diazabicyclo[5.4.0]undec-7-ene / tetrahydrofuran / 0.5 h / 0 °C 4.1: boron trifluoride diethyl etherate / tetrahydrofuran / 13 h / 0 - 65 °C / Reflux View Scheme | |
Multi-step reaction with 3 steps 1.1: boron tribromide / dichloromethane / 0.33 h / 25 °C 1.2: 50 °C 2.1: N,N,N,N,-tetramethylethylenediamine; chloro-trimethyl-silane / dichloromethane / 0.33 h / 0 °C / Inert atmosphere 2.2: 0 - 5 °C / Inert atmosphere 3.1: sodium hydrogencarbonate; Oxone / water; acetone / 30 °C View Scheme |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
(5α,17β)-3-oxo-4-azaandrost-1-ene-17-(ethoxycarbonyl)carboxylate
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: N,N,N,N,-tetramethylethylenediamine; chloro-trimethyl-silane / dichloromethane / 0.5 h / -10 °C / Inert atmosphere 1.2: 2 h / -10 - 0 °C 2.1: potassium tert-butylate / N,N-dimethyl-formamide / 1.33 h / -15 °C 2.2: 2 h / 50 °C 3.1: triethylamine / acetonitrile / 4 h / -7 - -5 °C / Inert atmosphere View Scheme |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
C20H29NO5S
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: N,N,N,N,-tetramethylethylenediamine; chloro-trimethyl-silane / dichloromethane / 0.5 h / -10 °C / Inert atmosphere 1.2: 2 h / -10 - 0 °C 2.1: potassium tert-butylate / N,N-dimethyl-formamide / 1.33 h / -15 °C 2.2: 2 h / 50 °C 3.1: 1,8-diazabicyclo[5.4.0]undec-7-ene / acetonitrile / 0.25 h / -20 °C View Scheme |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
C24H35NO4
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: N,N,N,N,-tetramethylethylenediamine; chloro-trimethyl-silane / dichloromethane / 0.5 h / -10 °C / Inert atmosphere 1.2: 2 h / -10 - 0 °C 2.1: potassium tert-butylate / N,N-dimethyl-formamide / 1.33 h / -15 °C 2.2: 2 h / 50 °C 3.1: 1,8-diazabicyclo[5.4.0]undec-7-ene / tetrahydrofuran / 0.5 h / 0 °C View Scheme |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: sodium hydroxide / methanol / 50 - 55 °C 2: benzotriazol-1-ol; dicyclohexyl-carbodiimide View Scheme |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: sodium hydroxide / methanol / 50 - 55 °C 2: benzotriazol-1-ol; dicyclohexyl-carbodiimide View Scheme |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
(4aR,4bS,6aS,7S,9aS,9bS,11aR)-4a,6a-Dimethyl-2-oxo-2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-1H-indeno[5,4-f]quinoline-7-carboxylic acid cyclohexylamide
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: sodium hydroxide / methanol / 50 - 55 °C 2: benzotriazol-1-ol; dicyclohexyl-carbodiimide 3: N,O-bis(trimethylsilyl)trifluoroacetamide; 2,3-dicyano-5,6-dichloro-p-benzoquinone / toluene / 90 - 95 °C View Scheme |
3-oxo-4-aza-5α-androstane-17β-carboxylic acid methyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: sodium hydroxide / methanol / 50 - 55 °C 2: benzotriazol-1-ol; dicyclohexyl-carbodiimide 3: N,O-bis(trimethylsilyl)trifluoroacetamide; 2,3-dicyano-5,6-dichloro-p-benzoquinone / toluene / 90 - 95 °C View Scheme |
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