[Synthesis of (8Z,11Z,14Z)-eicosatrien-5-ynoic (5,6-dehydroarachidonic) acid and its transformation into [5,6-3H]arachidonic acid and [5,6-3H]prostaglandins E2 and F2 alpha].

8Z,11Z,14Z-Eicosatriene-5-ynoic acid and its tritium-labelled analogue, [5,6-3H]arachidonic acid, have been synthesized on the basis of acetylenic compounds. [5,6-3H]Arachidonic acid has been used as substrate for the enzymatic synthesis of [5,6-3H]PGE2 and [5,6-3H]PGF2 alpha.