Synthesis of carbon-11-labeled CK1 inhibitors as new potential PET radiotracers for imaging of Alzheimer’s disease
作者:Mingzhang Gao、Min Wang、Qi-Huang Zheng
DOI:10.1016/j.bmcl.2018.05.053
日期:2018.7
from 5-amino-2,2-difluoro-1,3-benzodioxole and 3-substituted benzoic acids in 5 and 6 steps with 33% and 11%, 30% and 7% overall chemical yield, respectively. Carbon-11-labeled casein kinase 1 (CK1) inhibitors, [11C]methyl 3-((2,2-difluoro-5H-[1,3]dioxolo[4′,5′:4,5]benzo[1,2-d]imidazol-6-yl)carbamoyl)benzoate ([11C]5a) and N-(2,2-difluoro-5H-[1,3]dioxolo[4′,5′:4,5]benzo[1,2-d]imidazol-6-yl)-3-[11C]methoxybenzamide
参考标准品甲基3-(((2,2-二氟-5 H- [1,3] dioxolo [4',5':4,5]苯并[1,2 - d ]咪唑-6-基)氨基甲酰基)苯甲酸酯(5a)和N-(2,2-difluoro-5 H- [1,3] dioxolo [4',5':4,5]苯并[1,2- d ]咪唑-6-基)-3 -甲氧基苯甲酰胺(5c)及其相应的脱甲基前体3-((2,2-二氟-5 H- [1,3] dioxolo [4',5':4,5]苯并[1,2- d ]咪唑-6-基)氨基甲酰基)苯甲酸(6a)和N-(2,2-二氟-5 H- [1,3] dioxolo [4',5':4,5]苯并[1,2- d ]咪唑-6-基)-3-羟基苯甲酰胺(6b)由5-氨基-2,2-二氟-1,3-苯并二恶唑和3-取代的苯甲酸分5步和6步合成,总化学收率分别为33%和11%,30%和7%。碳11标记的酪蛋白激酶1(CK1)抑制剂,[