N-[1-(4-chlorophenyl)-1H-pyrrol-2-yl-13C4-methyleneamino]guanidinium acetate has been synthesized by a four-step procedure. This involved reduction of the Weinreb amide N,N′-dimethyl-N,N′-dimethyloxybutane-1,4-diamide-1,2,3,4-13C4 by Dibal-H to give the corresponding unstable dialdehyde which is reacted in situ with 4-chloroaniline to form 1-(4-chlorophenyl)-1H-pyrrole-13C4. This pyrrole analogue underwent a Vilsmeyer acylation with POCl3/DMF followed by final reaction with aminoguanidine bicarbonate to produce the desired labelled compound with 99% atom 13C. By using DMF [α-14C] a radio-labelled analogue was synthesized with a specific activity of 60 mCi/mmol. Copyright © 2005 John Wiley & Sons, Ltd.
通过四步程序合成了 N-[1-(4-
氯苯基)-1H-
吡咯-2-基-13C4-亚甲基
氨基]
胍乙酸盐。其中包括用 Dibal-H 还原 Weinreb 酰胺 N,N′-二甲基-N,N′-二甲基氧
丁烷-1,4-二酰胺-1,2,3,4-13C4,得到相应的不稳定二醛,再与 4-
氯苯胺原位反应生成 1-(4-
氯苯基)-1H-
吡咯-13C4。这种
吡咯类似物用 POCl3/
DMF 进行 Vilsmeyer酰化,最后与
氨基胍碳酸氢盐反应,生成所需的标记化合物,其中 99% 的原子为 13C。使用
DMF [α-14C] 合成了放射性标记的类似物,其比活度为 60 mCi/mmol。Copyright © 2005 John Wiley & Sons, Ltd. All Rights Reserved.