70529-06-5Relevant articles and documents
Structural basis of binding and justification for the urease inhibitory activity of acetamide hybrids of N-substituted 1,3,4-oxadiazoles and piperidines
Abbasi, Muhammad Athar,Afridi, Sahib Gul,Khan, Ajmal,Khan, Asifullah,Khan, Farman Ali,Lodhi, Muhammad Arif,Rehman, Aziz Ur
, (2020/09/18)
In present, we have performed the Michaelis–Menten kinetics studies of urease inhibitors (6a–o), having basic skeleton of acetamide hybrids of N-substituted 1,3,4-oxadiazoles and piperidines. From the Lineweaver-Burk plot, Dixon plot and their secondary replots, it has been confirmed that all the compounds have inhibited the enzyme competitively with Ki values of in range from 3.11 ± 0.2 to 5.20 ± 0.7 μM. Compound 6a was found to have lowest Ki among the series, while compounds 6d, 6e, 6gand 6i were found subsequently the excellent Ki values after 6a. Molecular docking has supported their types of inhibitions and structure activity-relationship. Most frequently, the nitro group oxygen atoms were found in contact with nickel ions of the active site. Moreover, all the compounds were subjected to toxicity tests and were found nontoxic against human neutrophils and plants, respectively.
Convergent synthesis, free radical scavenging, Lineweaver-Burk plot exploration, hemolysis and in silico study of novel indole-phenyltriazole hybrid bearing acetamides as potent urease inhibitors
Abbasi, Muhammad A.,Ali Shah, Syed A.,Hassan, Mubashir,Khan, Wajiha,Nazir, Majid,Raza, Hussain,Rehman, Aziz-ur,Seo, Sung Y.,Shahid, Muhammad,Siddiqui, Sabahat Z.
, (2020/05/25)
In the current paper, through a convergent multi-step approach, a library of novel indole-phenyltriazole hybrids containing an amide moiety (9a-k) was synthesized. The structural verification of all synthesized molecules was accomplished by CHN and spectral analyses data. These synthesized bi-heterocyclic derivatives (9a-k) were evaluated for their anti-ulcer potential by inhibitory action against Jack bean urease enzyme and subsequently their structure-activity relationship was perceived. Moreover, these compounds were inspected for cytotoxic profile by hemolytic activity and it was professed that nearly all the synthesized compounds showed low cytotoxicity. In addition, free radical scavenging activity and kinetic analysis were also carried out for these compounds to understand their mode of inhibition. So, it was summated that these derivatives might lead to further research gateways for obtaining better and safe anti-ulcer agents.
Synthesis and structure-activity relationship of tyrosinase inhibiting novel bi-heterocyclic acetamides: Mechanistic insights through enzyme inhibition, kinetics and computational studies
Butt, Abdul Rehman Sadiq,Abbasi, Muhammad Athar,Aziz-ur-Rehman,Siddiqui, Sabahat Zahra,Raza, Hussain,Hassan, Mubashir,Shah, Syed Adnan Ali,Shahid, Muhammad,Seo, Sung-Yum
, p. 459 - 472 (2019/02/19)
The present research was designed for the selective synthesis of novel bi-heterocyclic acetamides, 9a-n, and their tyrosinase inhibition to overwhelm the problem of melanogenesis. The structures of newly synthesized compounds were confirmed by spectral techniques such as 1H NMR, 13C NMR, and EI-MS along with elemental analysis. The inhibitory effects of these bi-heterocyclic acetamides (9a-n) were evaluated against tyrosinase and all these molecules were recognized as potent inhibitors relative to the standard used. The Kinetics mechanism was analyzed by Lineweaver-Burk plots which explored that compound, 9h, inhibited tyrosinase competitively by forming an enzyme-inhibitor complex. The inhibition constants Ki calculated from Dixon plots for this compound was 0.0027 μM. The computational study was coherent with the experimental records and these ligands exhibited good binding energy values (kcal/mol). The hemolytic analysis revealed their mild cytotoxicity towards red blood cell membranes and hence, these molecules can be pondered as nontoxic medicinal scaffolds for skin pigmentation and related disorders.