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
摘要 17(R)-OH-AA 和 14,15-dehydro-17(R)-OH-AA 由常见的四乙炔前体合成,并通过相应的对甲苯磺酸盐以中等收率获得它们的叠氮化物衍生物。由于叠氮基在 Lindlar 催化剂在苯中的氚化过程中保持稳定,因此 14,15-dehydro-17(S)-N3-AA 和 14,15-dehydro-17(R)-OH-AA 在放射性标记的 17(S)-N3-AA 和 17(R)-OH-AA 的合成。相反,在甲醇中还原叠氮化物得到 17(S)-NH2-AA,产率为 95%。