摘要:
A range of polyunsaturated beta- and gamma-thia fatty acids are conveniently prepared in two steps from naturally derived polyunsaturated fatty alcohols. In vitro beta-oxidation studies using acyl Co-A oxidase from Arthrobacter species indicate that (all-Z)-(eicosa-5,8,11,14-tetraenyloxy)acetic acid, synthesised as reported earlier, (all-Z)-(eicosa-5,8,11,1 4-tetraenylthio)acetic acid and (all-Z)-(eicosa-5,8,11,14-tetraenylthio)succinic acid are not susceptible to oxidation, whereas 3-[(all-Z)-(eicosa-5,8, 11,1 4-tetraenylthio)]propionic acid is oxidised with V-o appproximately 40% of that of arachidonic acid. In competitive experiments, none of these novel polyunsaturated fatty acids effect the beta-oxidation of arachidonic acid. (C) 1998 Elsevier Science Ireland Ltd. All rights reserved.