title: A comparative study of the physical properties and enzymatic reactions of slow reacting substance of anaphylaxis and some leukotriene D4 isomers.
abstract: Eight synthetic isomers of 5-hydroxy-6-S-cysteinylglycine -7,9,11,14-eicosatetraenoic acid were compared with authentic guinea pig SRS-A using UV spectroscopy, high performance liquid chromatography and soybean lipoxygenase. It was found that only the 5S, 6R 7,9trans 11,14cis isomer was similar to SRS-A in all respects. The 5S,6R 7trans, 9,11,14 cis isomer shows similar UV and HPLC characteristics but differs in that it spontaneously undergoes a 1,7 hydride shift reaction and unexpectedly does not react with soybean lipoxygenase.
mesh_terms: D000818:Animals; D001681:Biological Assay; D055598:Chemical Phenomena; D002621:Chemistry; D002851:Chromatography, High Pressure Liquid; D006168:Guinea Pigs; D007082:Ileum / Q000187:drug effects; D007536:Isomerism; D013189:SRS-A / Q000494:pharmacology*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D013189:SRS-A