ChemicalBook CAS DataBase List 11beta,21-dihydroxypregna-1,4,16-triene-3,20-dione 21-acetate

11beta,21-dihydroxypregna-1,4,16-triene-3,20-dione 21-acetate synthesis

7synthesis methods

Product Name:11beta,21-dihydroxypregna-1,4,16-triene-3,20-dione 21-acetate
CAS Number:3044-42-6
Molecular formula:C23H28O5
Molecular Weight:384.47

17652-24-3
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11beta,21-dihydroxypregna-1,4,16-triene-3,20-dione 21-acetate

3044-42-6
60 suppliers
$49.00/1g

Yield:3044-42-6 81%

Steps:

9 EXAMPLE 9
EXAMPLE 9 One gram of 17α,21-diacetoxy-11β-hydroxy-1,4- pregnadiene-3,20-dione is treated analogously to Example 1 in "Dowtherm" for 50 minutes at 250° C. and worked up. Recrystallization from isopropyl ether yields 700 mg of 21-acetoxy-11β-hydroxy-1,4,16-pregnatriene-3,20-dione (81% of theory). UV (methanol): ε₂₄₂ =22,500.

References:

Schering Aktiengesellschaft US4290963, 1981, A

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11-O-Trimethylsilyl Prednisolone 22-O-Acetate

53512-79-1
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3044-42-6
60 suppliers
$49.00/1g

References

17652-24-3
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3044-42-6
60 suppliers
$49.00/1g

112,21-dihydroxypregna-1,4,16-triene-3,20-dione

3103-17-1
42 suppliers
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References

125-10-0
332 suppliers
$39.00/10mg

3044-42-6
60 suppliers
$49.00/1g

References

6677-19-6 Synthesis

6677-19-6
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$625.00/500mg

3044-42-6
60 suppliers
$49.00/1g

References

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11beta,21-dihydroxypregna-1,4,16-triene-3,20-dione 21-acetate synthesis

11beta,21-dihydroxypregna-1,4,16-triene-3,20-dione 21-acetate Related Search: