GOLDEN 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
Why Choose Us 1. Quality Price We are the manufacturer, so we can provide the competitive price and high quality product. 2. Packing Products could be packaged according to customer's specializedrequirements. 3. Transport The products c
Cas:979-02-2
Min.Order:1000 Kilogram
Negotiable
Type:Other
inquiryOur Advantage: 1. Rich experience We specialize in this filed for many years, our APIs exported to all over the world and and we established long friendly relations of cooperation with our clients. 2. Great quality,purity and favorable Good quali
Cas:979-02-2
Min.Order:1 Kilogram
FOB Price: $10.0
Type:Trading Company
inquiryDayangChem exported this product to many countries and regions at best price. If you are looking for the material's manufacturer or supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product spe
Cas:979-02-2
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
inquiryWelcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our
Cas:979-02-2
Min.Order:1 Metric Ton
Negotiable
Type:Manufacturers
inquiryUnique advantages Guaranteed purity High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:White crystalline powder Storage:cool dry place Package:1kg/foil bag;25kg/drum Application:pharmaceutical intermed
Cas:979-02-2
Min.Order:1 Kilogram
Negotiable
Type:Trading Company
inquiryhigh quality Appearance:White or off-white Solid Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea Port:shanghai
Cas:979-02-2
Min.Order:1 Kilogram
Negotiable
Type:Manufacturers
inquiryThe above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi
Cas:979-02-2
Min.Order:1
Negotiable
Type:Other
inquiryProduct Name:16-Dehydropregnenolone Appearance:White Powder Assay: 99% Shipping method: Fedex, DHL, TNT, Sea, Air or as you wish Type: natural Package: Aluminum Foil Bag Hot Market: Europe, America, Asia Usage: Food,Cosmetics,Dietary Supplemen
Cas:979-02-2
Min.Order:1 Kilogram
FOB Price: $2.0 / 5.0
Type:Lab/Research institutions
inquiryOur main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block
Cas:979-02-2
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
inquiryName:16-dehydropregnenolone acetate CAS NO: 979-02-2 Grade:Medical scientific research and export Molecular formula: C23H32O3 Molecular weight:356.4984 Product Quality 12 years of chemical raw materials Mature operation of the industry S
Cas:979-02-2
Min.Order:25 Kilogram
FOB Price: $2.0 / 3.0
Type:Other
inquiryAdvantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the R&
Cas:979-02-2
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryOur company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O
Cas:979-02-2
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquirySuperiority As a reliable partner for Chinese market, we are specialized in chemical raw materials; consolidate sourcing, marketing, sales, distribution and after-sale services, providing our partners with sourcing evaluation, technology supports, to
Cas:979-02-2
Min.Order:1 Gram
FOB Price: $5.0 / 15.0
Type:Trading Company
inquiryHello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by email in time prod
Cas:979-02-2
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryWITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et
Cas:979-02-2
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
inquiryOur Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We
Cas:979-02-2
Min.Order:10 Gram
Negotiable
Type:Trading Company
inquiry1. Product advantages High purity, all above 98.5%, no impurities after dissolution We will test each batch to ensure quality OEM and private brand services designed for free Various cap colors available We can also provide MT1 peptide powd
Cas:979-02-2
Min.Order:1 Kilogram
FOB Price: $80.0 / 87.0
Type:Trading Company
inquiryProduct Name: 16-Dehydropregnenolone acetate Synonyms: 20-oxopregna-5,16-dien-3-beta-yl acetate;16-DPA(16-DENYDRO PREGNENOIONE ACETATE);5,16-Pregnadiene-3-beta-ol-20-;5,16-Pregnadiene-3β-ol-20-one acet
Advantages: Hubei XinRunde Chemical Co., Ltd is a renowned pharmaceutical manufacturer. We can offer high quality products at competitive price in quick delivery with 100% custom pass guaranteed. Never stop striving to offer our best serv
Cas:979-02-2
Min.Order:10 Gram
Negotiable
Type:Other
inquiry1. We are one of the domestic largest manufacturers of API; 2. We are always the supplier of products with higher quality and at more competitive price; 3. We are supplier of safe and ecofriendly products ; 4. We provide stable supply and
Cas:979-02-2
Min.Order:25 Kilogram
Negotiable
Type:Trading Company
inquiry1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized
Cas:979-02-2
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiry16-Dehydropregnenolone acetate CAS: 979-02-2 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality org
Cas:979-02-2
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiry1.high quality: quality is life. quality is the most important element for all goods. we have a lab doing research in wuhan china. hplc and nmr is available if needed. 2.reasonable price: we provide high quality products wi
Cas:979-02-2
Min.Order:10 Gram
Negotiable
Type:Lab/Research institutions
inquiry1. Timely and efficient service to ensure communication with customers 2. Produce products of different specifications and sizes according to your requirements. 3. Quality procedures and standards recognized by SGS. Advanced plant equipment ensures
Cas:979-02-2
Min.Order:1 Kilogram
FOB Price: $80.0 / 100.0
Type:Lab/Research institutions
inquiryProduct Detail Minimum Order Qty. 10 Gram
Cas:979-02-2
Min.Order:10 Gram
Negotiable
Type:Trading Company
inquiryHangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det
Cas:979-02-2
Min.Order:0 Metric Ton
Negotiable
Type:Lab/Research institutions
inquiryJ&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia
Cas:979-02-2
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryOur Services 1. New Molecules R&D 2. Own test center HPLC NMR GC LC-MS 3. API and Intermediates from China reputed manufacturers 4. Documents support COA MOA MSDS DMF open part Our advantages 1. Government awarded company. Top 100 enter
Cas:979-02-2
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryA substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc
Cas:979-02-2
Min.Order:4 Kilogram
Negotiable
Type:Lab/Research institutions
inquiry3β-acetoxy-20-hydroxyiminopregna-5,16-diene
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
With Dess-Martin periodane In dichloromethane; water for 0.333333h; | 95% |
(3β)-21-bromo-20-oxopregna-5,16-dien-3-yl acetate
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
With aluminum oxide; zirconium(IV) chloride; benzaldehyde microwave irradiation; | 88% |
3β-acetoxyandrosta-5,16-dien-17-yl trifluoromethanesulphonate
ethyl vinyl ether
A
(Z/E)-3β-Acetoxypregna-5,17(20)-dien-21-al
B
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
With tetrakis(triphenylphosphine) palladium(0); triethylamine In dimethyl sulfoxide at 60℃; for 4h; | A 8% B 82% |
Tributyl-[(3S,8R,9S,10R,13S,14S)-10,13-dimethyl-3-(tetrahydro-pyran-2-yloxy)-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]-stannane
acetyl chloride
A
3β-acetoxyandrost-5,16-diene
B
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
With N,N,N,N,N,N-hexamethylphosphoric triamide; bis(benzonitrile)palladium(II) dichloride at 80℃; for 8h; | A 80% B 30% |
Conditions | Yield |
---|---|
80% |
Conditions | Yield |
---|---|
Stage #1: solasodine With pyridine; ammonium chloride at 125 - 135℃; for 8 - 9h; Stage #2: acetic acid With chromium(VI) oxide In water; 1,2-dichloro-ethane at 0 - 20℃; for 1h; Product distribution / selectivity; | 65% |
Conditions | Yield |
---|---|
With chromium(VI) oxide; acetic acid | 41% |
Stage #1: pseudodiosgenin diacetate With potassium permanganate; sodium perchlorate In dichloromethane; water for 0.05h; Stage #2: N-benzyl-N,N,N-triethylammonium chloride In dichloromethane; water at 20℃; for 6h; Stage #3: With acetic acid for 3h; Product distribution / selectivity; Heating / reflux; | 32% |
Stage #1: pseudodiosgenin diacetate With potassium permanganate; sodium iodate In dichloromethane; water for 0.05h; Stage #2: N-benzyl-N,N,N-triethylammonium chloride In dichloromethane; water at 20℃; for 10h; Stage #3: With acetic acid for 3h; Product distribution / selectivity; Heating / reflux; | 32% |
3',4',6'-tri-O-acetyl-1',2',O-(16-dehydropregnenolone-3-yloxyethylidene)-α-D-glucopyranose
A
16-dehydropregnenolone
B
16-dehydropregnenolone acetate
C
di-16-dehydropregnenolone-2-yl ether
D
3-O-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-16-dehydropregnanolone
E
3-O-(2',3',4',6'-tetra-O-acetyl-α-D-glucopyranosyl)-16-dehydropregnenolone
Conditions | Yield |
---|---|
With mercury dibromide In nitromethane at 90℃; for 1h; Product distribution; other molar ratio, other time; | A 2% B 8% C 14% D 36.3% E 4% |
3',4',6'-tri-O-acetyl-1',2',O-(16-dehydropregnenolone-3-yloxyethylidene)-α-D-glucopyranose
A
16-dehydropregnenolone acetate
B
di-16-dehydropregnenolone-2-yl ether
C
3-O-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-16-dehydropregnanolone
D
3-O-(2',3',4',6'-tetra-O-acetyl-α-D-glucopyranosyl)-16-dehydropregnenolone
Conditions | Yield |
---|---|
With mercury dibromide In nitromethane at 90℃; for 1h; Further byproducts given; | A 8% B 14% C 36.3% D 4% |
(25R)-22,26-epiminocholesta-5,22(N)-diene-3β,16β-diol diacetate
A
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
With manganese(IV) oxide In chloroform for 48h; Ambient temperature; | A 5% B 6% C 16% |
Conditions | Yield |
---|---|
With 2,4,6-trimethyl-pyridine |
Pregna-5,16-diene-20-yne-3β-ol 3-Acetate
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
With boron trifluoride diethyl etherate; acetic anhydride; mercury(II) oxide Reagens 4: Essigsaeure;und anschliessend mit Wasser; | |
With water; aniline; mercury(II) chloride Reagens 4: Benzol; |
Conditions | Yield |
---|---|
at 220℃; und anschliessend unter 10 Torr auf 300grad; |
Conditions | Yield |
---|---|
With pyridine |
acetic acid
(22R,25R)-28-acetyl-spirosol-5-en-3β-ol
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
anschliessendes Behandeln mit CrO3 in wss. Essigsaeure und Erhitzen der danach erhaltenen Reaktionsloesung auf Siedetemperatur; |
Conditions | Yield |
---|---|
anschliessendes Behandeln mit CrO3 in wss. Essigsaeure und Erhitzen der danach erhaltenen Reaktionsloesung auf Siedetemperatur; |
acetic anhydride
solasodine
A
3β-acetoxy-16α-methoxy-pregn-5-en-20-one
B
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
Behandeln mit CrO3 in wss. Essigsaeure, Erwaermen mit methanol. KOH und Behandeln mit Acetanhydrid und Pyridin; |
Acetic acid (3S,8R,9S,10R,13S,14S,16R,17S)-17-acetyl-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-20-oxa-cyclopropa[16,17]cyclopenta[a]phenanthren-3-yl ester
A
3β-acetoxy-16α-hydroxy-pregn-5-en-20-one
B
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
With chromium dichloride |
Conditions | Yield |
---|---|
With dmap In dichloromethane Heating; Yield given; |
16-dehydro-pregnenolone acetate ethylene ketal
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
With aluminium(III) iodide In acetonitrile; benzene for 0.25h; Ambient temperature; | 85 % Chromat. |
Conditions | Yield |
---|---|
Yield given. Multistep reaction; | |
Multi-step reaction with 3 steps 1: 1 h / 195 °C 2: CrO3; AcOH / 3 h / 10 - 15 °C 3: 2.3 g / sodium bisulphite; AcOH / H2O / 1 h / Heating View Scheme | |
Multi-step reaction with 2 steps 1: boron trifluoride diethyl etherate / dichloromethane 2: acetic acid; chromium(VI) oxide / dichloromethane View Scheme |
Conditions | Yield |
---|---|
With hydrogen; palladium on activated charcoal In ethyl acetate at 30℃; under 2327.2 Torr; for 16h; | 98% |
With ammonium formate; palladium on activated charcoal In methanol for 0.6h; Heating; | 98% |
With hydrogen; palladium on activated charcoal In ethyl acetate at 30℃; under 2327.23 Torr; for 12h; | 98% |
16-dehydropregnenolone acetate
3β-hydroxypregn-5-en-20-one-3-acetate
Conditions | Yield |
---|---|
With palladium 10% on activated carbon; hydrogen In ethyl acetate at 30℃; for 6h; | 98.18% |
With magnesium; zinc(II) chloride for 0.583333h; | 90% |
With hydrogen; Cu/Al2O3 under 760 Torr; | 87% |
16-dehydropregnenolone acetate
3β-acetoxy-5α,6α-epoxypregn-16-ene-20-one
Conditions | Yield |
---|---|
With 3-chloro-benzenecarboperoxoic acid In dichloromethane at 20℃; for 1h; | 98% |
With 3-chloro-benzenecarboperoxoic acid In chloroform at 20℃; for 0.5h; | 97% |
With 3-chloro-benzenecarboperoxoic acid In chloroform at 20℃; for 0.5h; | 97% |
With silica gel; 3-chloro-benzenecarboperoxoic acid at 20℃; for 1.5h; | 91.75% |
With 3-chloro-benzenecarboperoxoic acid In chloroform at 0 - 20℃; |
Conditions | Yield |
---|---|
With hydrogen; palladium on activated charcoal In ethanol at 30℃; under 2844.39 Torr; for 12h; | 98% |
With 5% Pd(II)/C(eggshell); hydrogen In ethanol under 2327.23 Torr; for 10h; | 95% |
With 5%-palladium/activated carbon; hydrogen In ethanol under 2327.23 Torr; for 12h; | 95% |
Multi-step reaction with 2 steps 1: hydrogen; 5%-palladium/activated carbon / ethyl acetate / 20 °C / 750.08 Torr 2: hydrogen; palladium 10% on activated carbon / ethyl acetate / 20 °C / 750.08 Torr View Scheme |
N-hydroxy-4-methylbenzenecarboximidoyl chloride
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
Stage #1: N-hydroxy-4-methylbenzenecarboximidoyl chloride; 16-dehydropregnenolone acetate With N-ethyl-N,N-diisopropylamine In toluene at 20℃; for 0.0833333h; Stage #2: In toluene at 111℃; for 2h; regioselective reaction; | 98% |
Conditions | Yield |
---|---|
With sodium hydroxide; urea hydrogen peroxide adduct In methanol; water at 5℃; for 72h; | 97% |
With sodium hydroxide; urea hydrogen peroxide adduct In methanol; water at 5 - 500℃; for 72h; | 97% |
With sodium hydroxide; dihydrogen peroxide In methanol; water at 5 - 15℃; for 23h; | 95% |
Conditions | Yield |
---|---|
With water; sodium hydroxide In methanol at 20℃; for 12h; Reagent/catalyst; Solvent; | 97% |
With potassium hydroxide; tert-butyl alcohol In water at 30℃; for 10h; | 96% |
With potassium hydroxide In tert-butyl alcohol at 30℃; for 10h; | 96% |
16-dehydropregnenolone acetate
3β-acetoxy-20-hydroxyiminopregna-5,16-diene
Conditions | Yield |
---|---|
With pyridine; hydroxylamine hydrochloride In ethanol for 0.5h; Reflux; | 97% |
With pyridine; hydroxylamine hydrochloride In ethanol for 0.5h; Reflux; | 97% |
With pyridine; hydroxylamine hydrochloride for 96h; Cooling; | 96% |
16-dehydropregnenolone acetate
N-hydroxy-4-methoxy-benzenecarboximidoyl chloride
Conditions | Yield |
---|---|
Stage #1: 16-dehydropregnenolone acetate; N-hydroxy-4-methoxy-benzenecarboximidoyl chloride With N-ethyl-N,N-diisopropylamine In toluene at 20℃; for 0.0833333h; Stage #2: In toluene at 111℃; for 2h; regioselective reaction; | 97% |
16-dehydropregnenolone acetate
(3β)-21-bromo-20-oxopregna-5,16-dien-3-yl acetate
Conditions | Yield |
---|---|
With t-butyldimethylsiyl triflate; bromine; triethylamine In dichloromethane | 95% |
With copper(ll) bromide In i-Amyl alcohol at 46 - 48℃; | 95% |
With copper(ll) bromide In tetrahydrofuran |
t-butyldimethylsiyl triflate
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
With triethylamine In diethyl ether at 0 - 20℃; for 0.75h; | 95% |
With triethylamine In dichloromethane at 5℃; | 82% |
acetyl hydrazine hydrochloride
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
With iodine In ethanol for 1h; Cycloaddition; Heating; | 95% |
methylmagnesium bromide
16-dehydropregnenolone acetate
16α-methylpregn-5-en-3β-ol-20-one 3-acetate
Conditions | Yield |
---|---|
Stage #1: methylmagnesium bromide; 16-dehydropregnenolone acetate With copper(l) chloride In tetrahydrofuran at -10 - 0℃; for 0.333333h; Grignard reaction; Inert atmosphere; Stage #2: With methanol In tetrahydrofuran at -5℃; for 0.25h; Stage #3: With water In tetrahydrofuran; methanol at 5 - 10℃; for 2h; | 95% |
4-fluorophenyl benzaldehyde-tosylhydrazone sodium salt
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
In methanol; dichloromethane at 175℃; under 0.05 Torr; | 95% |
sodium 2-benzylidene-1-tosylhydrazin-1-ide
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
In methanol; dichloromethane at 175℃; under 0.05 Torr; | 95% |
16-dehydropregnenolone acetate
benzohydroximoyl chloride
3β-acetoxy-3'-phenyl-2'-isoxazolino[4',5'-d:16α,17α]pregn-5-en-20-one
Conditions | Yield |
---|---|
Stage #1: 16-dehydropregnenolone acetate; benzohydroximoyl chloride With N-ethyl-N,N-diisopropylamine In toluene at 20℃; for 0.0833333h; Stage #2: In toluene at 111℃; for 2h; regioselective reaction; | 95% |
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
With hydrogenchloride In methanol | 94% |
16-dehydropregnenolone acetate
Conditions | Yield |
---|---|
With 3-chloro-benzenecarboperoxoic acid In chloroform for 3h; Reflux; | 93.54% |
Conditions | Yield |
---|---|
Stage #1: 16-dehydropregnenolone acetate With hydrogen at 0 - 25℃; for 1h; Stage #2: With potassium hydroxide for 2h; Reflux; | 92.8% |
Multi-step reaction with 2 steps 1: 98 percent / H2 / Pd/C / ethyl acetate / 12 h / 30 °C / 2327.23 Torr 2: 97 percent / potassium hydroxide; H2O / methanol / 2 h / 30 °C View Scheme | |
Multi-step reaction with 2 steps 1: 97 percent / H2 / Pd/C / 15 h / 30 °C / 2327.17 Torr 2: 96 percent / KOH / 2-methyl-propan-2-ol; H2O / 16 h / 30 °C View Scheme |
Conditions | Yield |
---|---|
With iodine for 2h; Heating; | 91.7% |
Conditions | Yield |
---|---|
With lithium ethoxide In tetrahydrofuran at 20℃; | 91% |
Conditions | Yield |
---|---|
With pyridine; sodium methylate; sodium chloride for 1h; | 91% |
nitromethane
16-dehydropregnenolone acetate
3β-acetoxy-16α-nitromethyl-5-pregnan-20-one
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane at 20℃; for 12h; | 90% |
With piperidine | |
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane at 0℃; Michael condensation; | |
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane |
16-dehydropregnenolone acetate
allyl-trimethyl-silane
3β-acetoxy-16α-prop-2'-enylpregn-5-en-20-one
Conditions | Yield |
---|---|
With titanium tetrachloride In dichloromethane for 5h; Ambient temperature; | 90% |
phenylhydrazine hydrochloride
16-dehydropregnenolone acetate
3-acetoxy-5'-methyl-2'-phenyl-2'H-androst-5-eno[16,17-c]pyrazole
Conditions | Yield |
---|---|
With iodine In ethanol for 1h; Cycloaddition; Heating; | 88% |
Conditions | Yield |
---|---|
With potassium hydroxide In methanol at 15 - 20℃; for 0.5h; Michael addition; | 88% |
methylmagnesium bromide
16-dehydropregnenolone acetate
17α-hydroperoxy-16α-methyl-20-oxopregn-5-en-3β-yl acetate
Conditions | Yield |
---|---|
With copper(l) chloride In tetrahydrofuran; benzene at 0 - 5℃; for 0.333333h; Grignard reaction; Inert atmosphere; | 88% |
16-dehydropregnenolone acetate
3β-acetoxy-5α,6β-dichloropregn-16-en-20-one
Conditions | Yield |
---|---|
With chloro-trimethyl-silane; tetradecyltrimethylammonium permanganate In dichloromethane at 0 - 3℃; for 1.5h; | 87% |
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