Efficient synthesis of (±)-parasitenone, a novel inhibitor of NF-κB
摘要:
Dehydroxymethylepoxyquinomicin (DHMEQ, 1) is a novel nuclear factor-kappa B (NF-kappa B) inhibitor that inhibits DNA binding of NF-kappa B components including p65. To inspect its biological activity of 1, we synthesized parasitenone (3), possessing the common epoxycyclohexenone moiety of 1. Assessment of the inhibitory activity against NF-kappa B indicated that the epoxycyclohexenone moiety is the most essential element for the NF-kappa B inhibitory activity and the salicylic acid moiety may contribute the binding efficiency and specificity. (C) 2009 Elsevier Ltd. All rights reserved.
Dehydroxymethylepoxyquinomicin (DHMEQ, 1) is a novel nuclear factor-kappa B (NF-kappa B) inhibitor that inhibits DNA binding of NF-kappa B components including p65. To inspect its biological activity of 1, we synthesized parasitenone (3), possessing the common epoxycyclohexenone moiety of 1. Assessment of the inhibitory activity against NF-kappa B indicated that the epoxycyclohexenone moiety is the most essential element for the NF-kappa B inhibitory activity and the salicylic acid moiety may contribute the binding efficiency and specificity. (C) 2009 Elsevier Ltd. All rights reserved.
Anodic Oxidation on a Boron-Doped Diamond Electrode Mediated by Methoxy Radicals
Direct evidence: The existence of methoxyradical species formed during an anodicoxidation in MeOH on a boron‐doped diamond (BDD) electrode was confirmed by ESR spectroscopy. Effective production of a neolignan, licarin A, was accomplished by the BDD‐mediatedanodicoxidation protocol (see picture).