Use of substituted 4-biarylbutyric and 5-biarylpentanoic acid derivatives as matrix metalloprotease inhibitors for the treatment of respiratory diseases
Use of substituted 4-biarylbutyric and 5-biarylpentanoic acid derivatives as matrix metalloprotease inhibitors for the treatment of respiratory diseases
rational design led to the discovery of highly potent MMP inhibitors. In particular, biphenyl derivatives bearing at the para position COCH3 and OCF3 substituents permitted to inhibit gelatinases MMP-2 and MMP-9, with IC50 values as low as 30 nM and 21 nM, respectively, whereas the introduction at the same position of the bulkier SO2CH3 group afforded a potent collagenase MMP-8 inhibitor with an IC50
Synthesis of water soluble Pd‐Piperidoimidazolin‐2‐ylidene complexes and their catalytic activities in neat water
作者:Sinem Çakır、Hayati Türkmen
DOI:10.1002/aoc.5499
日期:2020.4
Through the strategy of water soluble N‐heterocyclic carbene (NHC) ligand, Pd‐catalyzed reactions were developed in aqueous media. Therefore, four new piperidoimidazolinium salts (1a‐d) consisting of sulfonate (a), esther (b, c) and carboxylic acid (d) functionalities and their water‐soluble Pd‐NHC complexes (2a‐d) were synthesized. The new compounds were characterized by elemental analysis, FTIR,
ONO pincer palladium (II) complexes featuring furoylhydrazone ligands: Synthesis, characterization and catalytic activity towards Suzuki–Miyaura coupling reaction
作者:Hengyu Qian、Shuyan Yu、Liping Song、Tongyan Zhang、Zhigang Yin、Feng Zhao、Jiale Yang、Caihong Wang
DOI:10.1002/aoc.5116
日期:2019.10
Four new palladium pincer complexes incorporating ONO type furoylhydrazone ligands have been prepared in good yields. These palladiumcomplexes were structurally characterized by elemental analysis, infrared, 1H‐ and 13C‐NMR spectra. X‐ray single crystal analyses of Pd1–Pd4 revealed that the metal center adopted a slightly distorted square planar geometry in which the hydrazone bound the metal ion
A novel electromagnetic mill promoted mechanochemical solid-state Suzuki–Miyaura cross-coupling reaction using ultra-low catalyst loading
作者:Xin Li、Yunxia Liu、Lizhi Zhang、Yunhui Dong、Qing Liu、Daopeng Zhang、Lei Chen、Zengdian Zhao、Hui Liu
DOI:10.1039/d2gc01427k
日期:——
The Nobel-prize-winning Suzuki–Miyauracross-coupling (SMC) is a practical and attractive strategy for the construction of C–C bonds in both academic and industrial settings. However, the development of solid-state SMC reactions remains extremely scarce. Herein, we report an electromagnetic mill (EMM) promoted solid-state SMC reactionusing ultra-low palladium loading (0.05 mol%) without any liquid
The present invention relates to a new class of methanogen inhibitors for ruminants. The invention also extends to the use of such compounds in ruminants to reduce methane production in the rumen and/or to enhance productivity in the ruminant.