Targeting the Unique Mechanism of Bacterial 1-Deoxy-<scp>d</scp>-xylulose-5-phosphate Synthase
作者:David Bartee、Caren L. Freel Meyers
DOI:10.1021/acs.biochem.8b00548
日期:2018.7.24
bisubstrate inhibitors bearing an acetylphosphonate (AP) pyruvate mimic and a distal negative charge mimicking the phosphoryl group of d-GAP, designed to target the unique form of DXP synthase that binds LThDP and d-GAP in a ternary complex. A d-phenylalanine-derived triazole acetylphosphonate (d-PheTrAP) emerged as the most potent inhibitor in this series, displaying slow, tight-binding inhibition
A novel stereospecific synthesis of (Z)- and (E)-β-triazole-acrylates by the combined use of a multicomponent reaction and photocatalyst-free photoisomerization is presented. The former can be regarded as a furfuryl cation induced formal [3 + 2]-cycloaddition/ring-opening/esterification domino sequence, which provides fast access to a variety of structurally diverse (Z)-β-triazole-acrylates. The products
Synthesis and bio-activity of novel iminophosphoranes
作者:Ch. Mohan、B. Hari Babu、C. Naga Raju、C. Suresh Reddy、V. Janardhan Reddy
DOI:10.1002/jhet.5570450514
日期:2008.9
8-diaminonaphthalene (2) to form the diazaphosphinines (3a and 3b). They were further reacted with different alkyl azides (4a-e) in THF at 50-55 °C under N2 atmosphere to afford the corresponding iminophosphoranes (5a-j). Their structures were established by elemental analysis, IR, 1H, 13C, 31P NMR and Mass spectral data. All of them exhibited moderate antibacterial activity.
通过两步法合成标题化合物(5a-j)。使4-氯苯基和双(2-氯乙基)氨基-二溴亚磷酸酯(1a和1b)与1,8-二氨基萘(2)反应形成二氮膦(3a和3b)。使它们与不同的烷基叠氮化物(4a-e)在THF中在N 2气氛下于50-55°C反应,得到相应的亚氨基正膦(5a-j)。通过元素分析IR,1 H,13 C,31建立了它们的结构1 H NMR和质谱数据。它们均显示出中等的抗菌活性。
Synthesis and characterization of active cuprous oxide particles and their catalytic application in 1,2,3‐triazole synthesis via alkyne‐azide cycloaddition reaction in water
作者:Micky Lanster Sawkmie、Dipankar Paul、Gitumoni Kalita、Khushboo Agarwala、Pradip K. Maji、Paresh Nath Chatterjee
DOI:10.1002/jhet.3723
日期:2019.12
the catalytic prowess of the various cuprous oxide materials in the cycloaddition reaction of alkynes and azides to synthesize 1,4‐disubstituted‐1,2,3‐triazoles. A wide variety of substitutions can nicely be tolerated in our optimized reaction conditions to produce very good to excellent yields of the corresponding triazoles in water at 55 °C. The reactions are carried out in water without any assistance
Interrupted CuAAC‐Thiolation for the Construction of 1,2,3‐Triazole‐Fused Eight‐Membered Heterocycles from
<i>O</i>
‐/
<i>N</i>
‐Propargyl derived Benzyl Thiosulfonates with Organic Azides
click-sulfenylation of O-/N-propargyl benzyl thiosulfonates with organic azides has been disclosed. The unified CuAAC-thiolation provides a wide range of triazole-fused eight-membered heterocycles in good to high (51–94%) yields under mild reaction conditions. Moreover, a three-component reaction is also achieved involving O-/N-propargyl benzyl thiosulfonates, benzyl bromide, and sodium azide to deliver fused-triazoles