380566-25-6Relevant articles and documents
5-Aryl-furan derivatives bearing a phenylalanine- or isoleucine-derived rhodanine moiety as potential PTP1B inhibitors
Niu, Tianwei,Wang, Peipei,Li, Cheng,Dou, Tong,Piao, Huri,Li, Jia,Sun, Liangpeng
, (2020/12/04)
Two series of 5-aryl-furan derivatives bearing a phenylalanine- or isoleucine-derived rhodanine moiety were identified as competitive protein tyrosine phosphatase 1B (PTP1B) inhibitors. Among the compounds studied, 5g was found to have the best PTP1B inhibitory potency (IC50 = 2.66 ± 0.16 μM) and the best cell division cycle 25 homolog B (CDC25B) inhibitory potency (IC50 = 0.25 ± 0.02 μM). Enzymatic data together with molecular modeling results demonstrated that the introduction of a sec-butyl group at the 2-position of the carboxyl group remarkably improved the PTP1B inhibitory activity.
Identification of a small molecule inhibitor that stalls splicing at an early step of spliceosome activation
Sidarovich, Anzhalika,Will, Cindy L.,Anokhina, Maria M.,Ceballos, Javier,Sievers, Sonja,Agafonov, Dmitry E.,Samatov, Timur,Bao, Penghui,Kastner, Berthold,Urlaub, Henning,Waldmann, Herbert,Lührmann, Reinhard
, (2017/03/23)
Small molecule inhibitors of pre-mRNA splicing are important tools for identifying new spliceosome assembly intermediates, allowing a finer dissection of spliceosome dynamics and function. Here, we identified a small molecule that inhibits human pre-mRNA splicing at an intermediate stage during conversion of pre-catalytic spliceosomal B complexes into activated Bact complexes. Characterization of the stalled complexes (designated B028) revealed that U4/U6 snRNP proteins are released during activation before the U6 Lsm and B-specific proteins, and before recruitment and/or stable incorporation of Prp19/CDC5L complex and other Bact complex proteins. The U2/U6 RNA network in B028 complexes differs from that of the Bact complex, consistent with the idea that the catalytic RNA core forms stepwise during the B to Bact transition and is likely stabilized by the Prp19/CDC5L complex and related proteins. Taken together, our data provide new insights into the RNP rearrangements and extensive exchange of proteins that occurs during spliceosome activation.
Synthesis and biological evaluation of nitromethylene neonicotinoids based on the enhanced conjugation
Lu, Siyuan,Zhuang, Yingying,Wu, Ningbo,Feng, Yue,Cheng, Jiagao,Li, Zhong,Chen, Jie,Yuan, Jing,Xu, Xiaoyong
, p. 10858 - 10863 (2014/01/06)
The neonicotinoids with a nitroconjugated system had excellent bioactivity, which could rival imidacloprid, and has been previously reported. However, the photodegradation and hydrolysis of this series of neonicotinoids was very quick according to our further investigation, which cannot be developed as a pesticide further. The approach to further enhance the conjugation was tried not only to increase the bioactivities but also to improve the stability in water and in the sun. A substituted phenyl group was introduced into the furan ring of compound 3. A total of 13 novel neonicotinoid analogues with a higher conjugation system were designed and synthesized. The target molecular structures have been confirmed on the basis of satisfactory analytical and spectral data. All compounds presented significant insecticidal activities on cowpea aphid (Aphis craccivora), cotton aphid (Aphis gossypii), and brown planthopper (Nilaparvata lugens). The stability test exhibited that the stability of novel analogues in water and under the mercury lamp has been improved significantly in comparison to compound 3.
