Investigation of thiolysis of 4-substituted SBD derivatives and rational design of a GSH-selective fluorescent probe
作者:Chao Yang、Xiaoqiang Tu、Xiuru Ji、Haishun Ye、Shan Li、Lu Sun、Long Yi、Zhen Xi
DOI:10.1039/d1ob01114f
日期:——
7-sulfonamide benzoxadiazole (SBD) derivatives for the development of fluorescent probes, herein we investigated the thiolysis reactivity and selectivity of a series of SBD compounds with different atoms (N/O/S/Se) at the 4-position. Both SBD-amine and SBD-ether are stable towardbiothiols in buffer (pH 7.4), while SBD-selenoether can react efficiently with biothiols GSH/Hcy, Cys, and H2S to produce
Compounds of the formula (I) wherein the substituents are as defined in claim 1, useful as a pesticides, especially as herbicides.
式(I)的化合物,其中取代基如权利要求1所定义,作为杀虫剂特别是除草剂时有用。
Discovery of New Substrates for<i>LuxAB</i>Bacterial Bioluminescence
作者:Tianyu Jiang、Weishan Wang、Xingkang Wu、Wenxiao Wu、Haixiu Bai、Zhao Ma、Yuemao Shen、Keqian Yang、Minyong Li
DOI:10.1111/cbdd.12747
日期:2016.8
In this article, four novel substrates with long halftime have been designed and synthesized successfully for luxAB bacterial bioluminescence. After in vitro and in vivo biological evaluation, these molecules can emit obvious bioluminescence emission with known bacterial luciferase, thus indicating a new promising approach to developing the bacterial bioluminescent system.
“Normal” and “cine” substitution in the thioalkoxy-dehalogenation of halogenobenzofuranzans—II
作者:L. Di Nunno、S. Florio、P.E. Todesco
DOI:10.1016/s0040-4020(01)83231-2
日期:1976.1
Thioalkoxy-dehalogenation of 4-halogenobenzofurazans affording “normal” and “cine” substitution products has been more extensively investigated. Evidence for a partial intervention of AEa-type mechanism in NS product formation is now available. The competition of this pathway increases with the bulkiness of thiolate ion. Kinetic data for different thiolates are reported indicating a sensitivity to
Improved synthesis of 4-amino-7-nitrobenz-2,1,3-oxadiazoles using NBD fluoride (NBD-F)
作者:Michael E. Jung、Timothy A. Dong、Xiaolu Cai
DOI:10.1016/j.tetlet.2011.02.111
日期:2011.5
The 7-nitrobenz-2,1,3-oxadiazole (NBD) unit is a highly useful fluorescent tag with wide application in biology. Installation of the NBD group typically proceeds via the SNAr reaction between an amine and an NBD halide. Herein, we demonstrate that NBD-F 1 results in significantly higher yields than NBD-Cl 2, and that triethylamine in dimethylformamide at 23 °C overnight is a broadly applicable set