2065-23-8Relevant articles and documents
Phenoxyacetohydrazones against Trypanosoma cruzi
Barbosa, Juliana M. C.,Capelini, Camila,Carvalho, Samir A.,Murta, Silvane M. F.,Sales Junior, Policarpo A.,Salom?o, Kelly,Wardell, James L.,Wardell, Solange M. S. V.,da Silva, Edson F.,de Souza, Kátia R.
, p. 1703 - 1712 (2021)
Herein, we reported the design, synthesis, antitrypanosomal and cytotoxic evaluation of a new phenoxyacetohydrazones series. All derivatives were assayed against bloodstream trypomastigote forms of T. cruzi (Y strain) and intracellular amastigotes using the model of L-929 cells infected with trypomastigotes of the Tulahuen strain. Compound (E)-N′-(3.4-dihydroxybenzylidene)-2-phenoxyacetohydrazide (11) showed activity against trypomastigotes (IC50/24 h = 10.3 μM) equivalent to that of benznidazole and with selectivity index (SI) = 46. Against infected cultures, (E)-N′-((5-nitrofuran-2-yl) methylene)-2-phenoxyacetohydrazide (19) was active at the nanomolar range (IC50/96 h = 40 nM), being about 38-fold more active than the standard drug and with SI equal to 2500. Thus, derivatives 11 and 19 could be considered a good prototypes for the development of new candidates for Chagas disease therapy. [Figure not available: see fulltext.]
Novel phenolic Mannich base derivatives: synthesis, bioactivity, molecular docking, and ADME-Tox Studies
Tokal?, Feyzi Sinan,Taslimi, Parham,Demircio?lu, ?brahim Hakk?,?endil, K?v?lc?m,Tuzun, Burak,Gül?in, ?lhami
, p. 563 - 577 (2021/07/12)
In this study, it was aimed to synthesize novel molecules containing potential biological active phenolic Mannich base moiety and evaluate the inhibition properties against α-glycosidase (α-Gly) and acetylcholinesterase (AChE). For this purpose, phenolic aldehydes (1–3) were synthesized from 4-hydroxy-3-methoxy benzaldehyde (vanillin) according to the Mannich Reaction. Five different carboxylic acid hydrazides (4a-e) were synthesized from esters obtained from carboxylic acids. Fifteen Schiff base derivatives (5a-e, 6a-e, and 7a-e) were synthesized from the condensation reaction of compounds 1–3 with 4a-e. In this work, a series of novel Schiff bases from Phenolic Mannich bases (5a-e, 6a-e, and 7a-e) were tested toward α-Gly and AChE enzymes. Compounds 5a-e, 6a-e, and 7a-e showed Kis in ranging of 341.36 ± 31.84–904.76 ± 93.56?nM on AChE and 176.27 ± 22.87—621.77 ± 69.98?nM on α-glycosidase. Finally, novel compounds were found using molecular docking method to calculate the biological activity of these bases against many enzymes. The enzymes used in these calculations are acetylcholinesterase and α-glycosidase, respectively. Molecule 6b is more effective and active than other molecules with a docking score parameter value of ? 8.77 against AChE enzyme and 6d is more effective and active than other molecules with a docking score parameter value of ? 4.94 against α-Gly enzyme. After calculating the biological activities of novel compounds, ADME/T analysis parameters were examined to calculate the future drug use properties.
Design and Synthesis of Novel 4-Hydroxyl-3-(2-phenoxyacetyl)-pyran-2-one Derivatives for Use as Herbicides and Evaluation of Their Mode of Action
Lei, Kang,Li, Pan,Yang, Xue-Fang,Wang, Shi-Ben,Wang, Xue-Kun,Hua, Xue-Wen,Sun, Bin,Ji, Lu-Sha,Xu, Xiao-Hua
, p. 10489 - 10497 (2019/10/02)
In order to develop a novel herbicide containing the β-triketone motif, a series of 4-hydroxyl-3-(2-phenoxyacetyl)-pyran-2-one derivatives were designed and synthesized. The bioassay results showed that compound II15 had good pre-emergent herbicidal activity even at a dosage of 187.5 g ha-1. Moreover, compound II15 showed a broader spectrum of weed control when compared with a commercial herbicide 2,4-dichlorophenoxyacetic acid (2,4-D), and displayed good crop safety to Triticum aestivum L. and Zea mays Linn. when applied at 375 g ha-1 under pre-emergence conditions, which indicated its great potential as a herbicide. More importantly, studying the molecular mode of action of compound II15 revealed that the novel triketone structure is a proherbicide of its corresponding phenoxyacetic acid auxin herbicide, which has a herbicidal mechanism similar to that of 2,4-D. The present work indicates that the 4-hydroxyl-3-(2-phenoxyacetyl)-pyran-2-one motif may be a potential lead structure for further development of novel auxin-type herbicides.