Synthesis of labelled oxylipins: leukotriene A4 and 8-epi-prostaglandin F2α
摘要:
Tritiated leukotriene A(4) and 8-epi-prostaglandin F-2 alpha methyl esters were prepared from the corresponding acetylenic precursors by selective reduction with tritium gas to provide a probe for the metabolite identification of these oxylipins. Partially deactivated Pd-catalysts were prepared from commercial products and their composition was optimized to achieve the better selectivity. A micro-method for the saponification of labelled oxylipins methyl esters was used.
Chemical modification in the hydrophilic and hydrophobic regions of leukotrienes was investigated in relation to their smooth muscle contractile activities. The conjugated diene or triene moiety in the hydrophobic region is crucial for potent contractile activity. The hydrophilic region at the C-6 position is not dependent only on amino acid or peptide for potent contractile activity ; some heterocyclic compounds can be used instead.
Synthesis and Biological Evaluation of Chlorinated Analogs of Leukotoxin Diol
作者:Christian Nilewski、Camille Le Chapelain、Susanne Wolfrum、Erick M. Carreira
DOI:10.1021/acs.orglett.5b02814
日期:2015.11.20
This study documents that chlorinated analogs of leukotoxin diol 1, in which the vic-diol has been replaced with vic-chlorides (2), induce caspase 3 activity and apoptosis on HepG2 cells in a dose-dependent manner in analogy to the parent diol. This suggests that chlorides may substitute for hydroxyls in certain lipids as bioisosteres in defined biological settings.
Synthesis and biological evaluation of 14,15-dehydro-LTA4 analog
作者:Mylène Garcia、Thierry Durand、Jean Claude Rossi、Simona Zarini、Manlio Bolla、Giancarlo Folco、Pat Wheelan、Angelo Sala
DOI:10.1016/s0960-894x(96)00598-7
日期:1997.1
New stable leukotriene A(4) analog with acetylenic function in positions 14,15 has been synthesized. Conversion of this analog to the corresponding LTC(4) derivative and the structural and biological characterization are presented. (C) 1997, Elsevier Science Ltd.
Enantiospecific syntheses of leukotrienes C4, D4, and E4, and [14,15-3H2]leukotriene E4 dimethyl ester
作者:Noal Cohen、Bruce L. Banner、Rocco J. Lopresti、Frederick Wong、Michael Rosenberger、Yu Ying Liu、Edna Thom、Arnold A. Liebman
DOI:10.1021/ja00349a053
日期:1983.6
Synthesis of labelled oxylipins: leukotriene A4 and 8-epi-prostaglandin F2α
作者:V. P. Shevchenko、I. Yu. Nagaev、N. F. Myasoedov、A. Guy、T. Durand、A. Vidal、J-P. Vidal、J-C. Rossi、V. V. Bezuglov
Tritiated leukotriene A(4) and 8-epi-prostaglandin F-2 alpha methyl esters were prepared from the corresponding acetylenic precursors by selective reduction with tritium gas to provide a probe for the metabolite identification of these oxylipins. Partially deactivated Pd-catalysts were prepared from commercial products and their composition was optimized to achieve the better selectivity. A micro-method for the saponification of labelled oxylipins methyl esters was used.