The Synthesis of (2<i>S</i>)-4,4-Difluoroglutamyl γ-Peptides Based on Garner’s Aldehyde and Fluoro-Reformatsky Chemistry
作者:James K. Coward、David W. Konas、Jessica J. Pankuch
DOI:10.1055/s-2002-35616
日期:——
development of optically active fluorinated synthetic building blocks of general utility is a current goal of organofluorine chemists. The serine-derived Garner aldehyde was converted to a general 4,4-difluoroamino acid building block via fluoro-Reformatsky reaction with ethyl bromodifluoroacetate. The utility of this building block was demonstrated by the synthesis of derivatives of(2S)-4,4-difluoroglutamine
开发具有通用性的光学活性氟化合成构件是有机氟化学家当前的目标。丝氨酸衍生的加纳醛通过与溴二氟乙酸乙酯的氟-Reformatsky 反应转化为通用的 4,4-二氟氨基酸结构单元。通过合成 (2S)-4,4-二氟谷氨酰胺、(2S)-4,4-二氟谷氨酸的衍生物并将其掺入设计为机械探针的含荧光团异肽 2 中,证明了该构件的实用性γ-谷氨酰水解酶。化合物 2 被证明是 γ-谷氨酰水解酶的底物,其水解速度明显低于相应的非氟化类似物。