- Discovery and Optimization of a Porcupine Inhibitor
-
Wnt proteins regulate various cellular functions and serve distinct roles in normal development throughout life. Wnt signaling is dysregulated in various diseases including cancers. Porcupine (PORCN) is a membrane-bound O-acyltransferase that palmitoleate
- Duraiswamy, Athisayamani Jeyaraj,Lee, May Ann,Madan, Babita,Ang, Shi Hua,Tan, Eldwin Sum Wai,Cheong, Wei Wen Vivien,Ke, Zhiyuan,Pendharkar, Vishal,Ding, Li Jun,Chew, Yun Shan,Manoharan, Vithya,Sangthongpitag, Kanda,Alam, Jenefer,Poulsen, Anders,Ho, Soo Yei,Virshup, David M.,Keller, Thomas H.
-
-
Read Online
- Novel 1-[5-(4-bromophenoxy)pentyl]-3-(2-arylamino- 2-oxoethyl)uracils and their antiviral properties
-
The title compounds were prepared from 1-[5-(4-bromophenoxy) pentyl]uracil by the introduction of N-arylacetamide moiety at the 3-position, the better approach involving the use of N-aryl-2-chloroacetamides as the reactants. Antiviral activity of the obtained compounds was estimated.
- Paramonova, Maria P.,Khandazhinskaya, Anastasia L.,Seley-Radtke, Katherine L.,Novikov, Mikhail S.
-
-
Read Online
- Highly Potent and Selective Butyrylcholinesterase Inhibitors for Cognitive Improvement and Neuroprotection
-
Butyrylcholinesterase (BChE) has been considered as a potential therapeutic target for Alzheimer's disease (AD) because of its compensation capacity to hydrolyze acetylcholine (ACh) and its close association with Aβ deposit. Here, we identified S06-1011 (hBChE IC50 = 16 nM) and S06-1031 (hBChE IC50 = 25 nM) as highly effective and selective BChE inhibitors, which were proved to be safe and long-acting. Candidate compounds exhibited neuroprotective effects and the ability to improve cognition in scopolamine- and Aβ1-42 peptide-induced cognitive deficit models. The best candidate S06-1011 increased the level of ghrelin, a substrate of BChE, which can function as improving the mental mood appetite. The weight gain of the S06-1011-treated group remarkably increased. Hence, BChE inhibition not only plays a protective role against dementia but also exerts a great effect on treating and nursing care.
- Li, Qi,Chen, Ying,Xing, Shuaishuai,Liao, Qinghong,Xiong, Baichen,Wang, Yuanyuan,Lu, Weixuan,He, Siyu,Feng, Feng,Liu, Wenyuan,Chen, Yao,Sun, Haopeng
-
p. 6856 - 6876
(2021/05/29)
-
- MOLECULES HAVING CERTAIN PESTICIDAL UTILITIES, AND INTERMEDIATES, COMPOSITIONS, AND PROCESSES RELATED THERETO
-
This disclosure relates to compounds having pesticidal utility against pests in phyla Nematoda, Arthropoda, and/or Mollusca, processes to produce such compounds and intermediates used in such processes, compositions containing such compounds, and processes of using such compounds against such pests. These compounds/molecules may be used, for example, as nematicides, acaricides, insecticides, miticides, and/or molluscicides. This document discloses compounds having the following formula (Formula One and/or Formula One-A).
- -
-
Page/Page column 391-392; 401
(2021/02/12)
-
- Dual targeting of cholinesterase and amyloid beta with pyridinium/isoquinolium derivatives
-
With the surge in the cases of Alzheimer's disease (AD) over the years, several targets have been explored to curb the disease. Cholinesterases, namely acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE), remain to be the available targets that are amendable to currently approved treatments. In this study, a series of novel compounds based on tramiprosate, a highly specific amyloid beta (Aβ) inhibitor, was designed to inhibit AChE, BuChE, and Aβ aggregation. In particular, the addition of a pyridinium/isoquinolinium ring to the tramiprosate moiety (to give compounds 3a–j) led to an increase in the binding affinity for the catalytic active site of cholinesterase, which was hampered by the presence of sulfonic acid. Exclusion of the sulfonic acid moiety led to a novel but effective class of cholinesterase inhibitors (9a–w). in vitro Aβ aggregation inhibition assay indicated that compounds 3a–j, 9e–f, 9i–l, 9q, 9r, 9u–w, and 12 could inhibit over 10% Aβ aggregation at 1 mM concentration. Cholinesterase inhibition assay suggested that compounds 9g, 9h, 9o, and 9q–t exhibit over 70% inhibition on both AChE and BuChE at a concentration of 100 μM. Amongst the designed molecules, compound 9r (ca 18% at 1 mM) showed comparable inhibitory effect on the inhibition of Aβ aggregation with tramiprosate (ca 20% at 1 mM), along with impressive cholinesterase inhibitory potential (AChE IC50 = 13 μM and BuChE IC50 = 12 μM), acceptable toxicity and ability to pass through blood brain barrier, which could be used to ameliorate the phenotypes of AD in preclinical models.
- Chakravarty, Harapriya,Ju, Yaojun,Chen, Wen-Hua,Tam, Kin Y.
-
p. 242 - 255
(2019/12/27)
-
- Wnt signal pathway inhibitor and use thereof
-
The invention relates to heterocyclic compounds with Wnt signal channel inhibition activity, particularly including compounds, pharmaceutically acceptable salts, various isotopes, various isomers or various crystal structures thereof having a structure represented by a general formula I (shown in the specification). By the compounds and a composition of the compounds, a Wnt signal channel can be effectively inhibited and diseases related to the Wnt signal channel can be treated or prevented.
- -
-
Paragraph 0047; 0216-0219
(2017/08/10)
-
- Sanglifehrin based compounds
-
There are provided inter alia compounds of formula (I) useful as cyclophilin inhibitors.
- -
-
-
- Exploration of the linkage elements of porcupine antagonists led to potent Wnt signaling pathway inhibitors
-
The Wnt signaling pathway is a pivotal developmental pathway. It operates through control of cellular functions such as proliferation, differentiation, migration and polarity. Aberrant Wnt signaling has been implicated in the formation and metastasis of tumors. Porcupine is a component of the Wnt signaling pathway. It is a member of the membrane-bound O-acyltransferase family of proteins. Porcupine catalyzes the palmitoylation of Wnt proteins, a process which is essential to their secretion and activity. Here we report a novel series of compounds obtained by a scaffold hybridization strategy from two known porcupine inhibitor classes. The leading compound 62 demonstrated subnanomolar (IC50 0.11 nM) inhibition of Wnt signaling in a paracrine cellular reporter gene assay. Compound 62 also potently inhibited Wnt secretion into culture medium, an indication of direct inhibition of the porcupine protein. Furthermore, compound 62 showed excellent chemical, plasma and liver microsomal stabilities. Collectively, these results strongly support further optimization of this novel scaffold to develop better Wnt pathway inhibitors.
- Dong, Yan,Li, Kehuang,Xu, Zhixiang,Ma, Haikuo,Zheng, Jiyue,Hu, Zhilin,He, Sudan,Wu, Yiyuan,Sun, Zhijian,Luo, Lusong,Li, Jiajun,Zhang, Hongjian,Zhang, Xiaohu
-
p. 6855 - 6868
(2015/11/11)
-
- Discovery of novel N -phenylphenoxyacetamide derivatives as EthR inhibitors and ethionamide boosters by combining high-throughput screening and synthesis
-
In this paper, we describe the screening of a 14640-compound library using a novel whole mycobacteria phenotypic assay to discover inhibitors of EthR, a transcriptional repressor implicated in the innate resistance of Mycobacterium tuberculosis to the second-line antituberculosis drug ethionamide. From this screening a new chemical family of EthR inhibitors bearing an N-phenylphenoxyacetamide motif was identified. The X-ray structure of the most potent compound crystallized with EthR inspired the synthesis of a 960-member focused library. These compounds were tested in vitro using a rapid thermal shift assay on EthR to accelerate the optimization. The best compounds were synthesized on a larger scale and confirmed as potent ethionamide boosters on M. tuberculosis-infected macrophages. Finally, the cocrystallization of the best optimized analogue with EthR revealed an unexpected reorientation of the ligand in the binding pocket.
- Flipo, Marion,Willand, Nicolas,Lecat-Guillet, Nathalie,Hounsou, Candide,Desroses, Matthieu,Leroux, Florence,Lens, Zoé,Villeret, Vincent,Wohlk?nig, Alexandre,Wintjens, René,Christophe, Thierry,Kyoung Jeon, Hee,Locht, Camille,Brodin, Priscille,Baulard, Alain R,Déprez, Benoit
-
supporting information; experimental part
p. 6391 - 6402
(2012/10/07)
-