A series of carboxylate bioisosteres of structures related to gabapentin 1 have been prepared. When the carboxylate was replaced by a tetrazole, this group was recognized by the alpha2-delta protein. Further characterization of alpha2-delta binding compounds 14a and 14b revealed a similar pattern of functional in vitro and in vivo activity to gabapentin 1.
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http://dx.doi.org/10.1016/j.bmcl.2005.05.016 | DOI Listing |
Biomolecules
December 2024
Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov St., 32, 119991 Moscow, Russia.
Amino acid analogues with a phosphorus-containing moiety replacing the carboxylic group are promising sources of biologically active compounds. The -phosphinic group, with hydrogen-phosphorus-carbon (H-P-C) bonds and a flattened tetrahedral configuration, is a bioisostere of the carboxylic group. Consequently, amino--phosphinic acids undergo substrate-like enzymatic transformations, leading to new biologically active metabolites.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
December 2024
Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan, 48109, United States.
Oxetanes are valuable motifs in medicinal chemistry applications, with demonstrated potential to serve as bioisosteres for an array of functional groups. Through the visible-light-mediated photoredox hydrodecarboxylation of 2-aryl oxetane 2-carboxylic acids this work enables access to the products of a [2+2]-photocycloaddition between alkenes and aryl aldehydes without the challenges associated with a traditional UV-light-mediated Paternò-Büchi reaction. Investigation into the hydrodecarboxylation mechanism reveals substrate-dependent modes of initiation under the conditions reported herein.
View Article and Find Full Text PDFChemistry
December 2024
Enamine Ltd., Winston Churchill Street 78, 02094, Kyїv, Ukraine.
A comprehensive study on the physicochemical properties of gem-fluorinated O-heterocyclic substituents is reported. Systematic additive effects of introducing O- and gem-CF group introduction on acidic properties (pK) of the corresponding carboxylic acids/protonated primary amines were demonstrated. The impact of the O/CF moieties on lipophilicity (LogP) was found to be complex; significant mutual influence of the corresponding polar moieties governed the compound's overall properties in this case.
View Article and Find Full Text PDFChem Biol Interact
December 2024
Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Build. 9, 1113, Sofia, Bulgaria; Department of Chemistry, Faculty of Pharmacy, Medical University of Sofia, Dunav -2 Street, 1000, Sofia, Bulgaria.
3,4-Dihydroxycyclobut-3-ene-1,2-dione (squaric acid, SQ) is the most important representative of the oxocarbon acids family. Squaric acid derivatives can be promising pharmaceutical agents, due to their unique structural properties, from which novel drugs benefit: a planar aromatic ring, the ability to form hydrogen bonds, good reactivity and similarity with carboxylate, phosphate and amide groups. These properties make it suitable for three major applications in cancer treatment.
View Article and Find Full Text PDFEur J Med Chem
February 2025
Department of Internal Medicine V, Hematology and Oncology, Tyrolean Cancer Research Institute (TKFI), Comprehensive Cancer Center Innsbruck (CCCI), Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria. Electronic address:
Drug resistance presents a significant challenge in cancer therapy, which has led to intensive research in resistance mechanisms and new therapeutic strategies. In chronic myeloid leukemia (CML), the introduction of Imatinib, the first tyrosine kinase inhibitor (TKI), drastically changed the outcome for patients. However, complete remission still cannot be achieved in a large number of patients in the long term.
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