4-Hydroxy-2(E)-nonen-1-al-diethylacetal 3 (HNE-DEA) was prepared by condensation of the Grignard compound derived from propiolaldehyde diethylacetal and n-hexanal followed by reduction of the resulting 4-hydroxy-2-nonyn-1-al-diethylacetal 2 with LiAlH4 according to the literature procedure with minor modifications. Swern oxidation [DMSO + (COCl2)] of 3 gave 30% yield of 4-oxo-2(E)-nonen-1-al-diethylacetal 5. [3H]NaBH4 and [2H]NaBH4 reduction of 5 gave rise respectively to [4-3H]HNE-DEA (specific activity 222 GBq/mmol) and [4-2H]HNE-DEA.
4- 羟基-2(E)-
壬烯-1-醛二
乙缩醛 3 (HNE-
DEA)的制备方法是:先用
丙炔醛二
乙缩醛和
正己醛缩合得到的格氏化合物,然后根据文献中的方法稍加改动,用 LiAlH4 还原得到的 4- 羟基-
2-壬烯-1-醛二
乙缩醛 2。对 3 进行[
DMSO + (COCl2)]Swern 氧化,得到 30% 产率的 4-氧代-2(E)-
壬烯-1-al-二
乙缩醛 5。5 的 [3H]NaBH4 和 [2H]NaBH4 还原分别得到 [4-3H]HNE-
DEA(比活度 222 GBq/mmol)和 [4-2H]HNE-
DEA。