New monocyclic phosphate, phosphonate and difluorophosphonate analogs of the natural AChE inhibitor cyclophostin were synthesized and their activity toward human AChE examined. Surprisingly, the phosphate, phosphonate, and difluorophosphonate analogs all showed diminished activity when compared with the natural product.
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http://dx.doi.org/10.1016/j.bmc.2015.10.044 | DOI Listing |
Molecules
August 2021
Laboratoire de Chimie et Biochimie de Molécules Bioactives, Université de Strasbourg/CNRS, UMR 7177, Institut Le Bel, 4 Rue Blaise Pascal, 67081 Strasbourg, France.
Three α,α-difluorophosphonate derivatives of fosmidomycin were synthesized from diethyl 1,1-difluorobut-3-enylphosphonate and were evaluated on . Two of them are among the best 1-deoxy-d-xylulose 5-phosphate reductoisomerase inhibitors, with IC in the nM range, much better than fosmidomycin, the reference compound. They also showed an enhanced antimicrobial activity against on Petri dishes in comparison with the corresponding phosphates and the non-fluorinated phosphonate.
View Article and Find Full Text PDFBioorg Med Chem
December 2015
Department of Chemistry and Biochemistry and the Center for Nanoscience, University of Missouri-St. Louis, One University Boulevard, St. Louis, MO 63121, USA. Electronic address:
New monocyclic phosphate, phosphonate and difluorophosphonate analogs of the natural AChE inhibitor cyclophostin were synthesized and their activity toward human AChE examined. Surprisingly, the phosphate, phosphonate, and difluorophosphonate analogs all showed diminished activity when compared with the natural product.
View Article and Find Full Text PDFJ Am Chem Soc
March 2015
Department of Chemistry, University of Nebraska, Lincoln, Nebraska 68588-0304, United States.
Described is an efficient stereocontrolled route into valuable, densely functionalized fluorinated phosphonates that takes advantage of (i) a Clostridial enzyme to set the absolute stereochemistry and (ii) a new [3,3]-sigmatropic rearrangement of the thiono-Claisen variety that is among the fastest sigmatropic rearrangements yet reported. Here, a pronounced rate enhancement is achieved by distal fluorination. This rearrangement is completely stereoretentive, parlaying the enzymatically established β-C-O stereochemistry in the substrate into the δ-C-S stereochemistry in the product.
View Article and Find Full Text PDFJ Biomol Struct Dyn
January 2016
a Department of Pharmacoinformatics , National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar 160 062 , Punjab , India.
Aspartate β-semialdehyde dehydrogenase (ASADH) is a key enzyme for the biosynthesis of essential amino acids and several important metabolites in microbes. Inhibition of ASADH enzyme is a promising drug target strategy against Mycobacterium tuberculosis (Mtb). In this work, in silico approach was used to identify potent inhibitors of Mtb-ASADH.
View Article and Find Full Text PDFOrg Lett
April 2012
Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.
A copper-catalyzed cross-coupling of iodobenzoates with bromozinc-difluorophosphonate, generated from diethyl bromodifluoromethylphosphonate and zinc in dioxane, is reported. The notable features of this reaction are its high reaction efficiency, excellent functional group compatibility, and operational simplicity. This protocol provides a useful and facile access to aryldifluorophosphonates of interest in life science.
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