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Basic Information
CAS No.: 52-70-0
Name: 6alpha,9-difluoro-11beta,17,21-trihydroxypregna-1,4-diene-3,20-dione 21-acetate
Molecular Structure:
Molecular Structure of 52-70-0 (6alpha,9-difluoro-11beta,17,21-trihydroxypregna-1,4-diene-3,20-dione 21-acetate)
Formula: C23H28 F2 O6
Molecular Weight: 438.469
Synonyms: Pregna-1,4-diene-3,20-dione,6a,9-difluoro-11b,17,21-trihydroxy-, 21-acetate(6CI,8CI)
Density: 1.35g/cm3
Boiling Point: 578.1°Cat760mmHg
Flash Point: 303.4°C
PSA: 100.90000
LogP: 2.16850
Related products
Synthetic route
2964-95-6

21-acetoxy-6α,9-difluoro-11β,17-dihydroxy-pregn-4-ene-3,20-dione

52-70-0

21-acetoxy-6α,9-difluoro-11β,17-dihydroxy-pregna-1,4-diene-3,20-dione

Conditions
ConditionsYield
With selenium(IV) oxide
3802-45-7

21-acetoxy-9,11β-epoxy-6α-fluoro-17-hydroxy-9β-pregna-1,4-diene-3,20-dione

52-70-0

21-acetoxy-6α,9-difluoro-11β,17-dihydroxy-pregna-1,4-diene-3,20-dione

Conditions
ConditionsYield
With hydrogen fluoride
106545-20-4

17α,21-diacetoxy-5α,6-oxide-3,3-ethylenedioxypregnan-20-one

52-70-0

21-acetoxy-6α,9-difluoro-11β,17-dihydroxy-pregna-1,4-diene-3,20-dione

Conditions
ConditionsYield
Multi-step reaction with 9 steps
1: boron fluoride; diethyl ether; benzene
2: toluene-4-sulfonic acid
3: HCl; acetic acid
4: methanol.KOH
5: durch Inkubation mit Rinder-Nebennieren-Suspension und anschliessender Acetylierung
6: methanesulfonyl chloride; pyridine; DMF
7: N-bromo-acetamide; dioxane; aqueous perchloric acid / Erwaermen einer Loesung des Reaktionsprodukts in Aceton mit Kaliumacetat
8: HF / dann mit Acetanhydrid
9: SeO2
View Scheme
1807-15-4

17,21-diacetoxy-4-pregnene-3,20-dione

52-70-0

21-acetoxy-6α,9-difluoro-11β,17-dihydroxy-pregna-1,4-diene-3,20-dione

Conditions
ConditionsYield
Multi-step reaction with 11 steps
1: toluene-4-sulfonic acid / Entfernen des entstehenden Butanons
2: chloroform; monoperoxyphthalic acid; diethyl ether
3: boron fluoride; diethyl ether; benzene
4: toluene-4-sulfonic acid
5: HCl; acetic acid
6: methanol.KOH
7: durch Inkubation mit Rinder-Nebennieren-Suspension und anschliessender Acetylierung
8: methanesulfonyl chloride; pyridine; DMF
9: N-bromo-acetamide; dioxane; aqueous perchloric acid / Erwaermen einer Loesung des Reaktionsprodukts in Aceton mit Kaliumacetat
10: HF / dann mit Acetanhydrid
11: SeO2
View Scheme
570-41-2

pregna-4,9(11)-diene-6α-fluoro-3,20-dione-17-hydroxy-21-acetate

52-70-0

21-acetoxy-6α,9-difluoro-11β,17-dihydroxy-pregna-1,4-diene-3,20-dione

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: N-bromo-acetamide; dioxane; aqueous perchloric acid / Erwaermen einer Loesung des Reaktionsprodukts in Aceton mit Kaliumacetat
2: HF / dann mit Acetanhydrid
3: SeO2
View Scheme
2967-03-5

5α-hydroxy-17α,21-diacetoxy-6β-fluoropregnane-3,20-dione

52-70-0

21-acetoxy-6α,9-difluoro-11β,17-dihydroxy-pregna-1,4-diene-3,20-dione

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1: HCl; acetic acid
2: methanol.KOH
3: durch Inkubation mit Rinder-Nebennieren-Suspension und anschliessender Acetylierung
4: methanesulfonyl chloride; pyridine; DMF
5: N-bromo-acetamide; dioxane; aqueous perchloric acid / Erwaermen einer Loesung des Reaktionsprodukts in Aceton mit Kaliumacetat
6: HF / dann mit Acetanhydrid
7: SeO2
View Scheme
3827-45-0

6α-fluoro-17,21-dihydroxy-pregn-4-ene-3,20-dione

52-70-0

21-acetoxy-6α,9-difluoro-11β,17-dihydroxy-pregna-1,4-diene-3,20-dione

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: durch Inkubation mit Rinder-Nebennieren-Suspension und anschliessender Acetylierung
2: methanesulfonyl chloride; pyridine; DMF
3: N-bromo-acetamide; dioxane; aqueous perchloric acid / Erwaermen einer Loesung des Reaktionsprodukts in Aceton mit Kaliumacetat
4: HF / dann mit Acetanhydrid
5: SeO2
View Scheme
1058-55-5

21-acetoxy-6α-fluoro-11β,17-dihydroxy-pregn-4-ene-3,20-dione

52-70-0

21-acetoxy-6α,9-difluoro-11β,17-dihydroxy-pregna-1,4-diene-3,20-dione

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: methanesulfonyl chloride; pyridine; DMF
2: N-bromo-acetamide; dioxane; aqueous perchloric acid / Erwaermen einer Loesung des Reaktionsprodukts in Aceton mit Kaliumacetat
3: HF / dann mit Acetanhydrid
4: SeO2
View Scheme
3793-12-2

17,21-diacetoxy-6α-fluoro-pregn-4-ene-3,20-dione

52-70-0

21-acetoxy-6α,9-difluoro-11β,17-dihydroxy-pregna-1,4-diene-3,20-dione

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: methanol.KOH
2: durch Inkubation mit Rinder-Nebennieren-Suspension und anschliessender Acetylierung
3: methanesulfonyl chloride; pyridine; DMF
4: N-bromo-acetamide; dioxane; aqueous perchloric acid / Erwaermen einer Loesung des Reaktionsprodukts in Aceton mit Kaliumacetat
5: HF / dann mit Acetanhydrid
6: SeO2
View Scheme
3800-29-1, 7793-44-4

21-acetoxy-9,11β-epoxy-6α-fluoro-17-hydroxy-9β-pregn-4-ene-3,20-dione

52-70-0

21-acetoxy-6α,9-difluoro-11β,17-dihydroxy-pregna-1,4-diene-3,20-dione

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: HF / dann mit Acetanhydrid
2: SeO2
View Scheme
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