A Facile One-pot Synthesis of N α-Urethane Protected 3-Amino Alkyl Isoxazole-5-Carboxylic Acids and their Utility for the Preparation of Isoxazole-Linked Peptidomimetics
作者:G. Chennakrishnareddy、B. Vasantha、N. Narendra、Vommina V. Sureshbabu
DOI:10.1007/s10989-011-9256-x
日期:2011.9
Cu(I) catalyzed [3+2] cycloaddition of in situ generated N α-Fmoc/Boc/Z-protected amino alkyl nitrile oxide with propiolic acid has led to a new class of 3,5-disubstituted isoxazole-bearing amino acid derivatives. The click chemistry protocol described herein is efficient in furnishing the isoxazole embedded amino acids. These unnatural synthons were subjected to chain extension on N- as well as C-termini
的Cu(I)催化的[3 + 2]的在原位产生环加成Ñ α -Fmoc /的Boc / Z保护的氨基酸与丙炔酸已经导致了一类新的3,5-二取代的异恶唑轴承氨基酸衍生物烷基氧化腈。本文所述的点击化学方案可有效提供异恶唑嵌入的氨基酸。这些非天然的合成子在N-和C-末端上进行链延伸,以获得带有3,5-二取代的异恶唑的二和三肽类似物。