Chloroprednisone

Chloroprednisone
Systematic (IUPAC) name
	(6α)-6-Chloro-17,21-dihydroxypregna-1,4-diene-3,11,20-trione
Identifiers
CAS Number	52080-57-6
ATC code	S01CA09 (WHO) (combination with antiinfectives)
PubChem	CID: 3034026
ChemSpider	2298578
Synonyms	6α-Chloro-1,4-pregnadiene-17a,21-diol-3,11,20-trione
Chemical data
Formula	C21H25ClO5
Molecular mass	392.873 g/mol
	SMILES O=C(CO)[C@@]3(O)CC[C@H]2[C@@H]4C[C@H](Cl)\C1=C\C(=O)\C=C/[C@]1(C)[C@H]4C(=O)C[C@@]23C ;
	InChI InChI=1S/C21H25ClO5/c1-19-5-3-11(24)7-14(19)15(22)8-12-13-4-6-21(27,17(26)10-23)20(13,2)9-16(25)18(12)19/h3,5,7,12-13,15,18,23,27H,4,6,8-10H2,1-2H3/t12-,13-,15-,18+,19-,20-,21-/m0/s1 ; Key:NPSLCOWKFFNQKK-ZPSUVKRCSA-N ;

Chloroprednisone is a topical glucocorticoid first reported in 1960.^[1] It is a chlorinated derivative of prednisone. The acetate ester prodrug, chloroprednisone 21-acetate, was sold under the brand name Topilan as an anti-inflammatory agent.^[2]^[3]

There is little published about chloroprednisone. This may be due to limited activity topically because the skin lacks the necessary activating enzyme 11-Beta hydroxysteroid dehydrogenase. Systemically, this agent's activity on Glucocorticoid receptors may not have competed with agents like Fludrocortisone or Dexamethasone.

References

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↑ Batres, Enrique; Bowers, Albert; Djerassi, Carl; Kincl, Fred A.; Mancera, Octavio; Ringold, Howard J.; Rosenkranz, Jorge; Zaffaroni, Alejandro. 6α-Chloro- or 6α-fluoro-1,4-pregnadiene-3,20-diones. (1960) DE 1079042
↑ Merck Index, 11th Edition, 2157
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