2-Aryl-3-methyloctahydrophenanthrene-2,3,7-triols as Potent Dissociated Glucocorticoid Receptor Agonists
摘要:
A significant improvement in agonist activity of the previously described 2-aryloctahydrophenanthrene-2,3,7-triol series of dissociated glucocorticoid receptor agonists (DAGRs) was achieved by modifying the substitution at C3 from (S)-3-hydroxy to (R)-3-hydroxy-3-methyl. The IC50 of the prototype 13 in the efficacy assay measuring repression of IL-1 induced MMP-13 expression was 3.5 nM, exhibiting 87% of the maximal effect of dexamethasone (DEX). It displayed a dissociated profile by exhibiting 42% of the maximal effect of DEX in a mouse mammary tumor virus (MMTV) luciferase reporter transactivation assay. Compound 13 and analogues containing heterocyclic replacements for the C2 phenyl and modified B rings showed high repression of TNF alpha production in human whole blood, with IC50 values (43-167 nM) approaching the level of DEX (21 nM). On the basis of X-ray structures and force field calculations, the overall potency of this series was attributed to a favorable conformation of the C2 alpha phenyl, induced by the neighboring C3 alpha methyl.
The present invention provides compounds of the formula
1
wherein A is of the formula
2
and X, Y, n, R
1
-R
25
are as described in the specification which are modulators of the glucocorticoid receptor and are thus useful for the treatment of animals requiring glucocorticoid receptor agonist therapy. Glucocorticoid receptor modulators are useful in the treatment of certain inflammatory conditions.
The present invention provides compounds of the formula
wherein A is of the formula
and X, Y, n, R
1
—R
25
are as described in the specification which are modulators of the glucocorticoid receptor and are thus useful for the treatment of animals requiring glucocorticoid receptor agonist therapy. Glucocorticoid receptor modulators are useful in the treatment of certain inflammatory conditions.