Results 221 to 230 of about 97,443 (299)

Quaternary Piperazine Substituted Rhodamines with Enhanced Brightness for Super-Resolution Imaging.

Journal of the American Chemical Society, 2019
Insufficient brightness of fluorophores poses a major bottleneck for the advancement of super-resolution microscopes. Despite being widely used, many rhodamine dyes exhibit suboptimal brightness due to the formation of twisted intramolecular charge ...
Zhiwei Ye, Wei Yang, Chao Wang, Ying Zheng, Weijie Chi, Xiaogang Liu, Zhenlong Huang, Xiaoyuan Li, Yi Xiao   +8 more
semanticscholar   +1 more source

Simultaneously enhancing the fire retardancy and crystallization rate of biodegradable polylactic acid with piperazine-1,4-diylbis(diphenylphosphine oxide)

, 2020
The simultaneous improvement of flame retardancy and crystallization rate for polylactic acid (PLA) has always been a challenge in the field of engineering applications.
Lubin Liu, Yue Xu, Y. Di, Miaojun Xu, Yun-Wen Pan, Bin Li   +5 more
semanticscholar   +1 more source

Novel bis(pyrazole-benzofuran) hybrids possessing piperazine linker: Synthesis of potent bacterial biofilm and MurB inhibitors.

Bioorganic chemistry (Print), 2020
Novel 1,4-bis[(2-(3-(dimethylamino)-1-oxoprop-2-en-1-yl)benzofuran-5-yl)methyl]piperazine was prepared and used as a key synthon for the this study. Therefore, 1,3-dipolar cycloaddition of this synthon with the appropriate hydrazonyl chlorides afforded a
Ahmed E. M. Mekky, S. Sanad
semanticscholar   +1 more source

An appraisal of anti-mycobacterial activity with structure-activity relationship of piperazine and its analogues: A review.

European journal of medicinal chemistry, 2020
Piperazine, is privileged six membered nitrogen containing heterocyclic ring also known as 1,4-Diazacyclohexane. Consequently, piperazine is a versatile medicinally important scaffold and is an essential core in numerous marketed drugs with diverse ...
P. Girase, S. Dhawan, Vishal Kumar, S. Shinde, M. Palkar, R. Karpoormath   +5 more
semanticscholar   +1 more source

An Overview of Piperazine Scaffold as Promising Nucleus for Different Therapeutic Targets.

Current pharmaceutical design, 2020
Piperazine scaffolds are a group of heterocyclic atoms having pharmacological values and shows significant results in pharmaceutical chemistry. Piperazine has the flexible core structure for the design and synthesis of new bioactive compounds.
Anjali Sharma, S. Wakode, Faizana Fayaz, Shaik Khasimbi, F. Pottoo, A. Kaur   +5 more
semanticscholar   +1 more source

A novel flame retardant derived from DOPO and piperazine and its application in epoxy resin: Flame retardance, thermal stability and pyrolysis behavior

Polymer degradation and stability, 2019
A novel flame retardant poly (piperazine phosphaphenanthrene) (DOPMPA) was successfully synthesized via two step reactions using DOPO and piperazine as reactants and characterized by infrared spectrometry (FT-IR), nuclear magnetic resonance (NMR) and gel
Rui Chen, Kaixian Hu, Haoyang Tang, Junjie Wang, Fusheng Zhu, Hong Zhou   +5 more
semanticscholar   +1 more source

Piperazine impregnation on Zeolite 13X as a novel adsorbent for CO2 capture: experimental and modeling

, 2020
Zeolite 13X was modified using a piperazine solution for CO2 adsorption purposes. The operating parameters including temperature, pressure, piperazine concentration, adsorbent amount, and particle size are investigated experimentally to examine ...
F. Fashi, A. Ghaemi, A. Behroozi
semanticscholar   +1 more source

Site-Selective C-H Alkylation of Piperazine Substrates via Organic Photoredox Catalysis.

Organic Letters, 2020
Piperazine-containing compounds serve as one of the most important classes of compounds throughout all fields of chemistry. Alas, current synthetic methods have fallen short of providing a general method for the synthesis of highly decorated piperazine ...
Joshua McManus, Nicholas P R Onuska, Matthew S. Jeffreys, Nicole C. Goodwin, David A. Nicewicz   +4 more
semanticscholar   +1 more source

Piperazine-Grafted Magnetic Reduced Graphene Oxide (Fe3O4@rGO-NH) as a Reusable Heterogeneous Catalyst for Gewald Three-Component Reaction

Polycyclic aromatic compounds (Print), 2020
In recent years, interesting physical and chemical properties of graphene oxide (GO) have led to a great deal of excitement in the chemistry. One of the most promising results is the use of GO and the functionalized GOs as heterogeneous catalysts in ...
Esmail Rezaei-Seresht, Morteza Bakhshi-Noroozi, B. Maleki   +2 more
semanticscholar   +1 more source

Design and Synthesis of Purine Connected Piperazine Derivatives as Novel Inhibitors of Mycobacterium tuberculosis.

Bioorganic & Medicinal Chemistry Letters, 2020
A series of novel purine linked piperazine derivatives were synthesized to identify new, potent inhibitors of Mycobacterium tuberculosis. The compounds were designed to target MurB disrupting the biosynthesis of the peptidoglycan and exert ...
Srihari Konduri, J. Prashanth, V. Krishna, D. Sriram, J. Behera, D. Siegel, Koya Prabhakara Rao   +6 more
semanticscholar   +1 more source