Synthesis of the endothiopeptide BOC-Trp-Ile-Ala-Aib-Ile-ValΨ[CSNH]Aib-Leu-Aib-Pro-OMe by a variation of the ‘azirine/oxazolone method’
作者:Jürg Lehmann、Anthony Linden、Heinz Heimgartner
DOI:10.1016/s0040-4020(98)00506-7
日期:1998.7
The synthesis of the decaendothiopeptide BOC-Trp-Ile-Ala-Aib-Ile-ValΨ[CSNH]Aib-Leu-Aib-Pro-OMe is described. The introduction of the thioamide group next to the bulky Aib occurred via a variation of the ‘azirine/oxazolone method’ without epimerisation. The structure of the decaendothiopeptide was etablished by single-crystal X-ray crystallography, thereby two types of helices could be observed.
描述了十硫代肽BOC-Trp-Ile-Ala-Aib-Ile-Val- [CSNH] Aib-Leu-Aib-Pro-OMe的合成。通过改变“叠氮基/恶唑酮法”而不发生差向异构,将硫代酰胺基引入到大体积的Aib旁边。通过单晶X射线晶体学确定十硫代硫肽的结构,从而可以观察到两种类型的螺旋。