作者:Michel L. Belley、Yves Gareau、Robert J. Zamboni、David G. Ahern、Yang Hong
DOI:10.1002/jlcr.2580360612
日期:1995.6
A new method for the synthesis of highly deuterated or tritiated leukotrienes was developed. The higher reactivity of a terminal alkene compared to a 1,2-disubstituted one permitted the selective deuteration or tritiation of the diyne 14,15,19,19,20,20-hexadehydro LTC4 triester 1. After hydrolysis, LTC4 was obtained in 36% overall yield. An average of seven deuterium or tritium atoms was incorporated and the specific activity of the tritiated LTC4 was greater than 180 Ci/mmol. 1 was obtained from the addition of glutathione to 14,15,19,19,20,20-hexadehydro LTA4 ethyl ester which was the product of a Wittig reaction between (3,8-nonanediyn-1-yl)triphenylphosphonium iodide and 5(S), 6(S), 7(E), 9(E) ethyl 5,6-epoxy-11-oxo-7,9-undecadienoate.
我们开发了一种合成高氚代或三氚代白三烯的新方法。与 1,2-二取代烯烃相比,末端烯烃具有更高的反应活性,因此可以选择性地对 14,15,19,19,20,20-六代氢 LTC4 三酯 1 进行氘化或三氚化。水解后,LTC4 的总产率为 36%。其中平均含有 7 个氘原子或氚原子,氚化 LTC4 的比活度大于 180 Ci/mmol。1 是通过将谷胱甘肽加入 14,15,19,19,20,20-六去氢 LTA4 乙酯而得到的,后者是 (3,8-壬二炔-1-基)三苯基碘化鏻与 5(S)、6(S)、7(E)、9(E) 5,6-环氧-11-氧代-7,9-十一二烯酸乙酯进行威蒂希反应的产物。