作者:F. Dollé、L. Martarello、Y. Bramoullé、M. Bottlaender、A.D. Gee
DOI:10.1002/jlcr.947
日期:2005.6
o)benzoic acid, GI181771 ((S)-1) has been isotopically labelled with carbon-11 at its urea site using [11C]phosgene in a one-pot two-step process, via the intermediate preparation of an [11C]isocyanate derivative. Optimized conditions for the preparation of (S)-[11C]-1 were the following: (1) Trapping of [11C]phosgene (radiosynthesized from cyclotron-produced [11C]methane via [11C]carbon tetrachloride
新型 CCK-A 激动剂,(S)-3-(3-1-[(isopropylphenylcarbamoyl)methyl]-2,4-dioxo-5-phenyl-2,3,4,5-tetrahydro-1H-benzo[ b][1,4]diazepin-3-yl}ureido)benzoic acid, GI181771 ((S)-1) 已在其尿素位点使用 [11C] 光气在一锅二合一中用碳 11 同位素标记一步法,通过中间体制备[11C]异氰酸酯衍生物。制备 (S)-[11C]-1 的优化条件如下: (1) 捕集 [11C] 光气(从回旋加速器产生的 [11C] 甲烷通过 [11C] 四氯化碳放射合成,对已发表的工艺稍作修改) 在室温下在 300 µl 含有 0. 6 µmol 合适的(结构复杂的)手性胺得到相应的 [11C] 异氰酸酯,然后 (2) 添加过量的 3-氨基苯甲酸(40 µmol