Syntheses of leukotriene-derivatives

Some general synthetic routes for the synthesis of cysteinyl-leukotriene derivatives derived from stable building blocks are described. D6-LTE4, a metabolically stable isotopically labelled mass spectrometric internal standard, 20-hydroxy-LTE4, the unnatural 6-epi-LTE4; LTE3, a LT-derivative with 2-amino-thiophenol as a modified "amino-acid" and 14,15-dehydro-LTA4 were prepared. The compounds were tested in a LT-inhibition assay using a monoclonal antibody.