Journal of labelled compounds and radiopharmaceuticals p. 569 - 576 (2002)
Update date:2022-08-11
Topics:
Iida, Katsumi
Tokiwa, Shinji
Ishii, Toshihiro
Kajiwara, Masahiro
5-[4,5-13C2]- and 5-[1,5-13C2]Aminolevulinic acid (ALA) have been synthesized by the Gabriel condensation of potassium phthalimide with ethyl bromo [1,2-13C2]acetate (derived from [1,2-13C2]acetic acid) or ethyl bromo[2-13C]-acetate (derived from sodium [2-13C]acetate), followed by conversion to the chloride, coupling reaction with 2-ethoxycarbonylethylzinc iodide derived from ethyl 3-iodopropionate or 2-methoxy[13C]carbonylethylzinc iodide derived from methyl 3-iodo[1-13C]propionate (generated from potassium [13C]cyanide), and hydrolysis. Copyright
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