Synthesis of Optically Pure 4-Fluoro-Glutamines as Potential Metabolic Imaging Agents for Tumors
作者:Wenchao Qu、Zhihao Zha、Karl Ploessl、Brian P. Lieberman、Lin Zhu、David R. Wise、Craig B. Thompson、Hank F. Kung
DOI:10.1021/ja109203d
日期:2011.2.2
route to prepare all four stereoisomeric 4-fluoro-glutamines was developed by exploiting a Passerini three-component reaction. The skeleton of 4-substituted glutamine derivatives was efficiently constructed. Subsequent four-step reactions, highlighted by a "neutralized" TASF fluorination, provided the desired products with high yields and excellent optical purity. The optically pure fluorine-18 labeled
通过利用 Passerini 三组分反应开发了一种用于制备所有四种立体异构 4-氟-谷氨酰胺的通用合成路线。有效构建了 4-取代谷氨酰胺衍生物的骨架。随后的四步反应,以“中和”的 TASF 氟化为重点,提供了具有高产率和优异光学纯度的所需产物。使用 18-crown-6/KHCO(3) 或 K[222]/K(2)CO(3) 催化系统也成功地制备了光学纯氟 18 标记的 4-氟谷氨酰胺。使用 9L 肿瘤细胞和 SF188(Bcl-xL) 肿瘤细胞(一种源自胶质母细胞瘤的谷氨酰胺成瘾肿瘤)进行的初步细胞摄取和抑制研究为它们与正电子发射断层扫描 (PET) 结合用于体内成像的潜在应用提供了强有力的证据。肿瘤,