Copper
<scp>porphyrin‐catalyzed</scp>
C(sp
<sup>2</sup>
)
<b>—</b>
O bond construction via coupling phenols with formamides
作者:Shuang Yang、Xiao‐Yan Chen、Ming‐Feng Xiong、Hao Zhang、Lei Shi、Dong‐Zi Lin、Hai‐Yang Liu
DOI:10.1002/jccs.202100046
日期:2021.8
construction of C(sp2)—Obond via coupling formamides with phenols was achieved firstly. A broad range of substrates afforded various carbamates in moderate to good yields with good functional group tolerance at low catalyst loading. Intermolecular competing kinetic isotope effect experiment indicated that the generation of formamide radical is the rate-determining step of current cross-dehydrogenative coupling
Design, synthesis and biological evaluation of novel carbamates as potential inhibitors of acetylcholinesterase and butyrylcholinesterase
作者:Jie Wu、Marco Pistolozzi、Siyu Liu、Wen Tan
DOI:10.1016/j.bmc.2020.115324
日期:2020.3
that nine compounds were more potent to inhibit both electric eel AChE and equine serum BChE than rivastigmine under the same experimental conditions. Further study confirmed that among the nine carbamates, BMC-3 (IC50(AChE) = 792 nM, IC50(BChE) = 2.2 nM) and BMC-16 (IC50(AChE) = 266 nM, IC50(BChE) = 10.6 nM) were excellent cholinesterase inhibitors with potential of permeating through the blood-brain
Design, synthesis, biological evaluation, and molecular modeling studies of chalcone-rivastigmine hybrids as cholinesterase inhibitors
作者:Ling Wang、Yu Wang、Yiguang Tian、Jinling Shang、Xiaoou Sun、Hongzhuan Chen、Hao Wang、Wen Tan
DOI:10.1016/j.bmc.2016.11.002
日期:2017.1
acetylcholinesterase and butyrylcholinesterase. Most of the target compounds showed hBChE selective activity in the micro- and submicromolar ranges. The most potent compound 3 exhibited comparable IC50 to the commercially available drug (rivastigmine). To better understand their structure activity relationships (SAR) and mechanisms of enzyme-inhibitor interactions, kinetic and molecular modeling studies including
A compound of the formula (I):
1
wherein R
1
represents C
1
-C
6
alkyl, amino (C
1
-C
6
alkyl)amino, di(C
1
-C
6
alkyl) amino or a nitrogen-containing saturated heterocyclic; R
2
and R
3
are the same or different and represent hydrogen or C
1
-C
6
alkyl; R
a
represents C
1
-C
6
alkyl or C
2
-C
6
alkenyl or together with R
2
represents a C
1
-C
3
alkylene; Arom represents aryl or heteroaryl; A represents a C
1
-C
6
alkylene; E represents a single bond, oxygen, sulfur or R
4
NR
4
—, wherein R
4
is hydrogen or C
1
-C
7
alkenoyl; X
1
and X
2
are the same or different and represent oxygen or sulfur; or a pharmacologically acceptable salt or ester thereof. The compound has superior acetylcholinesterase inhibitory action and selective serotonin reuptake inhibitory action, and is useful for treating or preventing Alzheimer's disease, depression, Huntington's chorea, Pick's disease, tardive dyskinesia, compulsive disorders or panic disorders.