Identification of new γ-hydroxybutenolides that preferentially inhibit the activity of mPGES-1
摘要:
Microsomal prostaglandin E-2 synthase-1 (mPGES-1) has been recognized as novel, promising drug target for anti-inflammatory and anticancer drugs. mPGES-1 catalyzes the synthesis of the inducible prostaglandin E-2 in response to pro-inflammatory stimuli, rendering this enzyme extremely interesting in drug discovery process owing to the drastic reduction of the severe side effects typical for traditional non-steroidal anti-inflammatory drugs. In the course of our investigations focused on this topic, we identified two interesting molecules bearing the gamma-hydroxybutenolide scaffold which potently inhibit the activity of mPGES-1. Notably, the lead compound 2c that inhibited mPGES-1 with IC50 = 0.9 mu M, did not affect other related enzymes within the arachidonic acid cascade. (C) 2012 Elsevier Ltd. All rights reserved.
Hydrogen Bond Directed
<i>ortho</i>
‐Selective C−H Borylation of Secondary Aromatic Amides
作者:Shao‐Tao Bai、Charles B. Bheeter、Joost N. H. Reek
DOI:10.1002/anie.201907366
日期:2019.9.9
iridium catalyst for ortho‐selectiveC−Hborylation of challenging secondary aromatic amide substrates, and the regioselectivity is controlled by hydrogen‐bond interactions. The BAIPy‐Ir catalyst forms three hydrogen bonds with the substrate during the crucial activation step, and allows ortho‐C−Hborylation with high selectivity. The catalyst displays unprecedented orthoselectivities for a wide variety