Stereocontrolled synthesis of (2S *,3R*,4R*)-4-hydroxy-3-methylproline using a silicon assisted aza-[2,3]-Wittig sigmatropic rearrangement
作者:James C. Anderson、Alice Flaherty
DOI:10.1039/b007586h
日期:——
The first racemic synthesis of the non-proteinogenic amino acid (2S,3R,4R)-4-hydroxy-3-methylproline (1) has been achieved via iodolactonisation of an unnatural amino acid derivative 4. The relative stereochemistry was derived from an efficient silicon assisted aza-[2,3]-Wittig sigmatropic rearrangement of 2.
通过非天然氨基酸衍生物4的碘内酯化,首次实现了非蛋白氨基酸(2S,3R,4R)-4-羟基-3-甲基脯氨酸(1)的消旋合成。相对立体化学结构由2的高效硅辅助氮杂-[2,3]-维蒂希旋构重排衍生而来。