from substituted aldoximes (mixture of E and Z) and alkynes, using alkyl nitrites under conventional heating conditions. The key nitrile oxide intermediates that are required for the synthesis of isoxazoles are formed by treatment of substituted aldoxime with either tert-butyl nitrite or isoamyl nitrite. The generated nitrile oxides underwent in situ [3+2] dipolar cycloaddition to the substituted alkynes
Stereospecific 1,4‐Metallate Shift Enables Stereoconvergent Synthesis of Ketoximes
作者:Kai Yang、Feng Zhang、Tongchang Fang、Guan Zhang、Qiuling Song
DOI:10.1002/anie.201906057
日期:2019.9.16
Reported herein is a stereospecific 1,4-metallate rearrangement for single-geometry ketoxime synthesis from oxime chlorides and arylboronic acids. This strategy exhibits broad substrate scope with excellent stereoselectivity under mild reaction conditions. In comparison with the conventional approaches, each configuration of unsymmetric diaryl oximes, as well as the thermodynamically less stable Z isomer
Synthesis of novel 2H-chromene-3-carboxylate isoxazole/isoxazoline derivatives via 1,3-dipolar cycloaddition reaction (NOAC)
作者:B. Srinivas、G. L. D. Krupadanam
DOI:10.1134/s1070363217020293
日期:2017.2
of novel (3-phenylisoxazol-5-yl)methyl-2H-chromene-3-carboxylates (7a–7d) and (3-phenyl-4,5-dihydroisoxazol-5-yl)methyl-2H-chromene-3-carboxylates (8a–8p) by 1,3-dipolar cycloaddition, and nitrileoxide and alkynecycloaddition (NOAC) is presented. The products are characterised by IR, 1H and 13C NMR, and ESI-MS data.
新颖(3-苯基异恶唑-5-基)的合成N-甲基-2- ħ色烯-3-羧酸盐(7A-7D)和(3-苯基-4,5-二氢异恶唑-5-基)甲基-2- ħ -chromene-介绍了通过1,3-偶极环加成反应生成的3-羧酸盐(8a–8p),以及一氧化氮和炔烃环加成反应(NOAC)。产物通过IR,1 H和13 C NMR以及ESI-MS数据表征。
Synthesis and biological evaluation of 4-phenoxy-phenyl isoxazoles as novel acetyl-CoA carboxylase inhibitors
作者:Xin Wu、Yongbo Yu、Tonghui Huang
DOI:10.1080/14756366.2021.1936514
日期:2021.1.1
Abstract Acetyl-CoAcarboxylase (ACC) is a crucial enzyme in fatty acid metabolism, which plays a major role in the occurrence and development of certain tumours. Herein, one potential ACC inhibitor (6a) was identified through high-throughput virtual screening (HTVS), and a series of 4-phenoxy-phenyl isoxazoles were synthesised for structure-activity relationship (SAR) studies. Among these compounds
Synthesis and Evaluation of Functionalized Aryl and Biaryl Isothiocyanates against Human MCF‐7 Cells
作者:Claire C. Fanta、Kaitlyn J. Tlusty、Sarah E. Pauley、Amanda L. Johnson、Genevieve A. Benjamin、Taylor K. Yseth、Michaela M. Bunde、Paul T. Pierce、Shirley Wang、Peter F. Vitiello、Jared R. Mays
DOI:10.1002/cmdc.202200250
日期:2022.7.19
properties of isothiocyanate 160 against MCF-7 cells after 24 h and 72 h incubation are shown. The plots depict data acquired via antiproliferation and ARE-induction assays; the area below ARE-induction data is shaded to improve clarity (t=24 h, light gray). The results of this study led to the identification of several key structure-activity relationships, as well as lead isothiocyanates demonstrating