A convergent synthesis of (17R,5Z,8Z,11Z,14Z)-17-hydroxyeicosa-5,8,11,14-tetraenoic acid analogues and their tritiated derivatives
作者:Igor V Ivanov、Stepan G Romanov、Valery P Shevchenko、Elena A Rozhkova、Mikhail A Maslov、Nataliya V Groza、Nikolai F Myasoedov、Hartmut Kuhn、Galina I Myagkova
DOI:10.1016/j.tet.2003.08.043
日期:2003.10
and their azide derivatives were obtained in moderate yields via the corresponding p-toluenesulfonates. Since the azido group remained stable during tritiation procedure on Lindlar's catalyst in benzene, both 14,15-dehydro-17(S)-N3-AA and 14,15-dehydro-17(R)-OH-AA constitute useful intermediates in the synthesis of radio-labelled 17(S)-N3-AA and 17(R)-OH-AA. In contrast, reduction of azide in methanol
Synthesis of (5Z,8Z,11Z,14Z)-18- and 19-azidoeicosa-5,8,11,14-tetraenoic acids and their [5,6,8,9,11,12,14,15-3H8]-analogues through a common synthetic route
作者:Stepan G. Romanov、Igor V. Ivanov、Valery P. Shevchenko、Igor Yu. Nagaev、Alexandr A. Pushkov、Nikolai F. Myasoedov、Galina I. Myagkova、Hartmut Kuhn
DOI:10.1016/j.chemphyslip.2004.02.008
日期:2004.7
Total synthesis of (5Z,8Z, 11Z, 14Z)-18- and 19-azidoeicosa-5,8,11,14-tetraenoic acids and their [5,6,8,9,11,12,14,15-H-3(8)]-analogues via the corresponding p-toluenesulphonates is reported. This synthetic approach allows the preparation of radioactively labelled arachidonic acid derivatives following a common synthetic route. Activity assays indicated that 15-lipoxygenases may tolerate the azido group in the substrate binding pocket and thus, radioactively labelled azido compounds may be used as photo-affinity probes to investigate mechanistic features of eicosanoid biosynthesis. (C) 2004 Elsevier Ireland Ltd. All rights reserved.
Total synthesis of (5Z,8Z,11Z,14Z)-18- and 19-oxoeicosa-5,8,11,14-tetraenoic acids
作者:Stepan G Romanov、Igor V Ivanov、Nataliya V Groza、Hartmut Kuhn、Galina I Myagkova
DOI:10.1016/s0040-4020(02)01029-3
日期:2002.10
8-oxo-ETE was synthesized via the corresponding tetraacetylenic precursor, which was prepared by cross-coupling of three key synthons: methyl 5-hexynoate, the bisfunctional C-7-C-13 fragment-7-bromo-2,5-heptadiyne-l-ol and rac-3-(benzoyloxy)hept-6-yn. The carbonyl function was introduced at the last synthesis step. 19-oxo-ETE was synthesized by coupling of acid anhydride, prepared from monomethyl ester of(5Z,8Z,l IZ,14Z)-nonadeca-5,8,11,14-tetraen-1,19-dioic acid, either with lithium dimethylcuprate or methylcuprate in a one-step procedure. (C) 2002 Elsevier Science Ltd. All rights reserved.