Detection of l-alanylaminopeptidase activity in microorganisms using fluorogenic self-immolative enzyme substrates
摘要:
A series of fluorogenic enzymatic substrates that incorporate a self-immolative spacer were synthesised for the purpose of identifying L-alanylaminopeptidase activity in microorganisms in agar media. These substrates resulted in the generation of fluorescent microorganism colonies with Gram-negative microorganisms. (C) 2016 Elsevier Ltd. All rights reserved.
I<sub>2</sub>/TBHP-Mediated tandem cyclization and oxidation reaction: Facile access to 2-substituted thiazoles and benzothiazoles
作者:Li Liu、Chen Tan、Rong Fan、Zihan Wang、Hongguang Du、Kun Xu、Jiajing Tan
DOI:10.1039/c8ob02826e
日期:——
readily available cysteine esters and 2-aminobenzenethiols as N and S sources. The reaction proceeds under an I2/TBHP system and involves a one-pot tandem cyclization and oxidation sequence. A diverse range of aldehydes is amenable for this transition-metal-free protocol, which provides an alternative method to rapidly access thiazole-containing molecules.
Detection of l-alanylaminopeptidase activity in microorganisms using fluorogenic self-immolative enzyme substrates
作者:Marie Cellier、Arthur L. James、Jonathan Lowe、Sylvain Orenga、John D. Perry、Ari K. Rasul、Stephen P. Stanforth
DOI:10.1016/j.bmc.2016.06.051
日期:2016.9
A series of fluorogenic enzymatic substrates that incorporate a self-immolative spacer were synthesised for the purpose of identifying L-alanylaminopeptidase activity in microorganisms in agar media. These substrates resulted in the generation of fluorescent microorganism colonies with Gram-negative microorganisms. (C) 2016 Elsevier Ltd. All rights reserved.
Synthesis of Benzothiazoles through Copper-Catalyzed One-Pot Three-Component Reactions with Use of Sodium Hydrosulfide as a Sulfur Surrogate
作者:Namjin Park、Yumi Heo、Manian Rajesh Kumar、Yong Kim、Kwang Ho Song、Sunwoo Lee
DOI:10.1002/ejoc.201101773
日期:2012.4
Copper-catalyzed one-pot three-component reactions of 2-iodoanilines, aldehydes, and NaSH·n H2O afford benzothiazoles in good yields. When CuCl was employed as a catalyst in the absence of a ligand, a variety of aromatic aldehydes and substituted 2-iodoanilines reacted with NaSH·n H2O to produce the corresponding 2-arylbenzothiazoles in 70–98 % yields. The copper catalyst plays a key role in C–S bond