作者:N. M. Gillings、A. D. Gee
DOI:10.1002/jlcr.517
日期:2001.11
Ring-opening of N-(tert-butoxycarbonyl)aziridine-2-isopropyl carboxylate with no-carrier-added (n.c.a.) [11C]cyanide is reported. Following purification by HPLC, the protected D,L-[4-11C]β-cyanoalanine was subsequently hydrolysed, to yield D,L-[4-11C]asparagine or D,L-[4-11C]aspartic acid, or reduced followed by hydrolysis to give D,L-2,4-diamino[4-11C]butyric acid. Typical syntheses starting with 10 GBq hydrogen [11C]cyanide yielded 1–1.4 GBq of [4-11C]amino acid within 30 min, giving the labelled amino acids in 30–40% decay corrected radiochemical yield (counted from [11C]cyanide) with radiochemical purities of 95%, 98% and 60%, respectively. Copyright © 2001 John Wiley & Sons, Ltd.
报告了 N-(叔丁氧羰基)氮丙啶-2-异丙基羧酸与无载体添加(n.c.a. )[11C]氰化物的开环反应。经 HPLC 纯化后,受保护的 D,L-[4-11C]β-氰基丙氨酸随后被水解,得到 D,L-[4-11C]天冬酰胺或 D,L-[4-11C]天冬氨酸,或还原后再水解,得到 D,L-2,4-二氨基[4-11C]丁酸。典型的合成是从 10 GBq [11C]cyanide 氢开始,在 30 分钟内得到 1-1.4 GBq [4-11C]氨基酸,标记氨基酸的衰变校正放射化学产率为 30-40%(从 [11C]cyanide 计算),放射化学纯度分别为 95%、98% 和 60%。Copyright © 2001 John Wiley & Sons, Ltd. All Rights Reserved.