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Title: | Analogs of the dihydroceramide desaturase inhibitor GT11 modified at the amide function: synthesis and biological activities |
Authors: | Bedia, Carmen CSIC ORCID CVN; Triola Guillem, Gemma CSIC ORCID; Casas, Josefina ; Llebaria, Amadeu CSIC ORCID; Fabriàs, Gemma CSIC ORCID | Keywords: | Dihydroceramide desaturase Inhibitor GT11 N-methyl De novo biosynthesis |
Issue Date: | 8-Sep-2005 | Publisher: | Royal Society of Chemistry (UK) | Citation: | Organic and Biomolecular Chemistry 3(20): 3707-3712 (2005) | Abstract: | Dihydroceramide desaturase is the last enzyme in the biosynthesis of ceramide de novo. The cyclopropene-containing sphingolipid GT11 is a competitive inhibitor of dihydroceramide desaturase. The biological effects of chemical modification of the GT11 amide linkage are reported in this article. Either N-methyl substitution or replacement of the amide -carbonyl methylene by oxygen result in inactive compounds. In contrast, both urea (3) and thiourea (4) analogs of GT11, as well as three -ketoamides (5–7), did inhibit the desaturation of N-octanoylsphinganine to N-octanoylsphingosine, although with significantly lower potency than GT11. Furthermore, the -ketoamides 5–7 inhibit the acidic ceramidase with similar potencies (IC50 52–83 µM). Inhibition of the neutral/alkaline ceramidase by these compounds requires around 20-fold higher concentrations. Structure–activity relationships and the biological interest of these compounds are discussed. | Description: | 6 pages, 3 figures, 2 schemes, 1 table.-- PMID: 16211106 [PubMed].-- Printed version published Sep 2005. | Publisher version (URL): | http://dx.doi.org/10.1039/b510198k | URI: | http://hdl.handle.net/10261/15792 | DOI: | 10.1039/b510198k | ISSN: | 1477-0520 | E-ISSN: | 1477-0539 |
Appears in Collections: | (IQAC) Artículos |
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