In vivo and in vitro SAR of tetracyclic MAPKAP-K2 (MK2) inhibitors. Part II
摘要:
Spirocyclopropane- and spiroazetidine-substituted tetracycles 13D-E and 16A are described as orally active MK2 inhibitors. The spiroazetidine derivatives are potent MK2 inhibitors with IC(50) <3 nM and inhibit the release of TNF alpha (IC(50)<0.3 mu M) from hPBMCs and hsp27 phosphorylation in anisomycin stimulated THP-1 cells. The spirocyclopropane analogues are less potent against MK2 (IC(50) = 0.05-0.23 mu M), less potent in cells (IC(50)<1.1 mu M), but show good oral absorption. Compound 13E (100 mg/kg po; bid) showed oral activity in rAIA and mCIA, with significant reduction of swelling and histological score. (C) 2010 Elsevier Ltd. All rights reserved.
In vivo and in vitro SAR of tetracyclic MAPKAP-K2 (MK2) inhibitors. Part II
摘要:
Spirocyclopropane- and spiroazetidine-substituted tetracycles 13D-E and 16A are described as orally active MK2 inhibitors. The spiroazetidine derivatives are potent MK2 inhibitors with IC(50) <3 nM and inhibit the release of TNF alpha (IC(50)<0.3 mu M) from hPBMCs and hsp27 phosphorylation in anisomycin stimulated THP-1 cells. The spirocyclopropane analogues are less potent against MK2 (IC(50) = 0.05-0.23 mu M), less potent in cells (IC(50)<1.1 mu M), but show good oral absorption. Compound 13E (100 mg/kg po; bid) showed oral activity in rAIA and mCIA, with significant reduction of swelling and histological score. (C) 2010 Elsevier Ltd. All rights reserved.