Benzobicyclooctanes as novel inhibitors of TNF-α signaling
摘要:
A novel series of TNF-alpha inhibitors based on a benzobicyclooctane scaffold is reported. The compounds display good potency in inhibiting TNF-alpha induced apoptosis and NFkappaB activation. Additionally, they are selective for TNF-alpha as they do not inhibit apoptosis induced by soluble Fas ligand. The compounds described here can act as leads for future medicinal chemistry efforts and may also be useful tools for elucidating the TNF-alpha signaling pathway. (C) 2002 Elsevier Science Ltd. All rights reserved.
The Diels-Alderreaction of 1,7-, 2,7-, 2,6-, 1,6-dihydroxynaphthalene and 6-bromo-2-naphthol with maleic anhydride was investigated. All of these 2-naphthol derivatives gave exo- and endo-adducts (II and III) except for the bromo-naphthol, from which only endo-adduct was obtained. The assignment of exo or endo configuration was based on lactone formation on NaBH4 reduction possible only from the exo