Regioselective O-alkylation of cortienic acid and synthesis of a new class of glucocorticoids containing a 17α-alkoxy, a 17α-(1′-alkoxyethyloxy), a 17α-alkoxymethyloxy, or a 17α-methylthiomethyloxy function
摘要:
The synthesis of a new class of glucocorticoids, to be evaluated as anti-inflammatory agents with expected low systemic toxicity, is described. The new steroids possess a 17-beta-chloromethyl carboxylate function and a 17-alpha-alkoxy, a 17-alpha-(1'-alkoxyethyloxy), a 17-alpha-alkoxymethyloxy, or a 17-alpha-methylthiomethyloxy function. A 17-alpha-alkoxy function is a new feature in cortisol analogs.
Novel soft steroid anti-inflammatory agents, said agents being esters or thioesters of 17.alpha.-alkoxy-11.beta.-hydroxyandrost-4-en-3-one-17.beta.-carboxylic acids, pharmaceutical compositions containing said agents, novel chemical intermediates useful in the preparation of said agents and methods of administering same to mammals in the treatment of inflammation. Preferred compounds are the haloalkyl esters of 17.alpha.-alkoxy-11.beta.-hydroxyandrost-4-en-3-one-17.beta.-carboxylic acids.