Solid-phase, solution, and segment condensation peptide syntheses incorporating chromium carbene complex-derived nonproteinogenic ("unnatural") amino acid fragments
作者:Shon R. Pulley、Louis S. Hegedus
DOI:10.1021/ja00073a020
日期:1993.10
solid-supported peptide. This photochemical methodology could be used iteratively, but it lacked efficiency. The procedure was most effective for segment condensation peptide synthesis. A tripeptide fragment containing two nonproteinogenic amino acids was synthesis by chromium carbene complex photochemistry. This tripeptide was incorporated into a merrifield resin supported tripeptide, deprotected,
在三肽甲酯存在下,光学活性铬氨基卡宾配合物的光解以良好的产率和良好的非对映选择性得到受保护的四肽甲酯。在 Merrifield 树脂支持的氨基酸或三肽存在下,这些相同的卡宾复合物的光解导致铬卡宾复合物衍生的氨基酸片段并入固体支持的肽中。这种光化学方法可以反复使用,但缺乏效率。该程序对于片段缩合肽合成最有效。通过铬卡宾复合光化学合成含有两个非蛋白氨基酸的三肽片段。该三肽被掺入到梅里菲尔德树脂支持的三肽中,去保护,