N-Benzylisatin Sulfonamide Analogues as Potent Caspase-3 Inhibitors: Synthesis, in Vitro Activity, and Molecular Modeling Studies
摘要:
A number of isatin sulfonamide analogues were prepared and their potencies for inhibiting caspase-1, -3, -6, -7, and -8 were evaluated in vitro. Several compounds displaying a nanomolar potency for inhibiting the executioner caspases, caspase-3 and caspase-7, were identified. These compounds were also observed to have a low potency for inhibiting the initiator caspases, caspase-1 and caspase-8, and caspase-6. Molecular modeling studies provided further insight into the interaction of this class of compounds with activated caspase-3. The results of the current study revealed a number of non-peptide-based caspase inhibitors that may be useful in assessing the role of inhibiting the executioner caspases in minimizing tissue damage in disease conditions characterized by unregulated apoptosis.
2-(Aryloxymethyl) azacyclic analogues as novel nicotinic acetylcholine receptor (nAChR) ligands
摘要:
A series of 2-(aryloxymethyl) azetidine and pyrrolidine nAChR ligands in which the 3-pyridyl moiety of a previously described series(1) was replaced by a substituted phenyl group was explored. Aromatic substitution afforded analogues with K-i values ranging from 3 Co >10,000 nM. Generally, substitution at the ortho- and para-position was unfavorable, whereas electron-withdrawing groups at the meta-position improved the Ki values. Copyright (C) 1996 Elsevier Science Ltd