Syntheses of stable-isotope labeled [M+7] and [M+6] 2-(methylamino)imidazole
作者:Yinsheng Zhang
DOI:10.1002/jlcr.625
日期:2002.10.30
Stable isotope-labeled 2-methylaminoimidazole (M+7 and M+6) was required as an intermediate in the synthesis of mass labeled drug candidates. These two isotopomers were synthesized with total yields of 24 and 36%, respectively. Labeled 2-aminoimidazole (M+4) was prepared from labeled isothiourea (M+3) and 2-aminoacetaldehyde dimethyl acetal (M+1 and M+2). The (M+1) version of 2-aminoacetaldehyde dimethyl