PREPARATION OF 3-LONG-CHAIN SUBSTITUTED 5-MEMBERED HETEROARYLENES AND STUDIES OF THEIR LANGMUIR-BLODGETT FILM FORMATION
摘要:
The synthesis of amphiphilic thiophene 1 and pyrrole 5 were achieved via Wittig and Friedel-Crafts reactions respectively. The ability of 1 and 5, as well as 3-heptadecylthiophene and poly(3-heptadecylthiophene), to form Langmuir-Blodgett films are discussed.
Discovery of an MLLT1/3 YEATS Domain Chemical Probe
作者:Moses Moustakim、Thomas Christott、Octovia P. Monteiro、James Bennett、Charline Giroud、Jennifer Ward、Catherine M. Rogers、Paul Smith、Ioanna Panagakou、Laura Díaz-Sáez、Suet Ling Felce、Vicki Gamble、Carina Gileadi、Nadia Halidi、David Heidenreich、Apirat Chaikuad、Stefan Knapp、Kilian V. M. Huber、Gillian Farnie、Jag Heer、Nenad Manevski、Gennady Poda、Rima Al-awar、Darren J. Dixon、Paul E. Brennan、Oleg Fedorov
DOI:10.1002/anie.201810617
日期:2018.12.10
YEATS domain (YD) containing proteins are an emerging class of epigenetic targets in drug discovery. Dysregulation of these modified lysine-binding proteins has been linked to the onset and progression of cancers. We herein report the discovery and characterisation of the first small-molecule chemical probe, SGC-iMLLT, for the YD of MLLT1 (ENL/YEATS1) and MLLT3 (AF9/YEATS3). SGC-iMLLT is a potent and
On the basis of the structures of small-molecule hits targeting the HIV-1 gp41, N-(4-carboxy-3-hydi-oxy)plieiiyl-2,5-dimethylpyl-role (2, NB-2), and N-(3-carboxy-4-chloro)phenylpyrrole (A(1), NB-64), 42 N-carboxyphenylpyrrole derivatives in two categories (A and B series) were designed and synthesized. We found that I I compounds exhibited promising anti-HIV-1 activity at micromolar level and their antiviral activity was correlated with their inhibitory activity on gp41 six-helix bundle formation, suggesting that these compounds block HIV fusion and entry by disrupting gp41 core formation. The structure-activity relationship and molecular docking analysis revealed that the carboxyl group Could interact with either Arg579 or Lys574 to form salt bridges and two methyl groups on the pyrrole ring were favorable for interaction with the residues in gp41 pocket. The most active compound, N-(3-carboxy-4-hydroxy)phenyl-2,5-dimethylpyrrole (A(12)), partially occupied the deep hydrophobic pocket, suggesting that enlarging the molecular size of A(12) could improve its binding affinity and anti-HIV-1 activity for further development as a small-molecule HIV fusion and entry inhibitor.
Aromatic hydrazides as specific inhibitors of bovine serum amine oxidase
New hydrazides were synthesized in search for specific inhibitors of bovine serum amine oxidase: a series of benzoic and phenylacetic acid hydrazides containing the 1H-imidazol-1-yl or the 1H-imidazol-1-ylmethyl group as (o, m, p)-substituent in the phenyl ring; an analogous series of p-substituted phenylhydrazides with 5 or 6-membered heterocyclic ring as substituent, and a series of similar phenylpropionic hydrazides. The longer and more flexible phenylacetic hydrazides, and to a somewhat lesser extent the phenylpropionic ones, were better specific inhibitors of bovine serum amine oxidase than the benzoic hydrazides, which were also bound by the enzyme with high affinity, but at a slow rate. Derivatives with p- and m -substituents were more reactive than the o-substituted ones. The chemical nature of the substituent was less important than its position in the phenyl ring and the presence of methylene spacers. These data point to the presence of a hydrophobic site at short distance from the protein carbonyl cofactor, so that simultaneous interaction of the 2 ends of the inhibitor molecule can occur at the 2 sites. The presence of the hydrophobic site was confirmed by the capability of some molecule deprived of the hydrazidic group to act as mild inhibitors. All hydrazides were less reactive by 2-3 orders of magnitude towards pig kidney diamine oxidase and FAD-dependent monoamine oxidase from rat brain mitochondria, while the other compounds showed similar inhibition power against all proteins. The specificity for the bovine enzyme seems therefore to be related to the concerted action of the 2 moieties of the inhibitor molecule.
Silvestri; Pagnozzi; Valoti, Il Farmaco, 1994, vol. 49, # 10, p. 625 - 632
作者:Silvestri、Pagnozzi、Valoti、Fusi
DOI:——
日期:——
Benzoic acid derivatives with improved antifungal activity: Design, synthesis, structure–activity relationship (SAR) and CYP53 docking studies
fungal-specific target of natural phenolic antifungal compounds and discovered several inhibitors with antifungal properties. In this study, we performed similarity-based virtual screening and synthesis to obtain benzoic acid-derived compounds and assessed their antifungal activityagainst Cochliobolus lunatus, Aspergillus niger and Pleurotus ostreatus. In addition, we generated structural models of CYP53 enzyme