Synthesis and assignment of stereochemistry of the antibacterial cyclic peptide xenematide
作者:Kuo-yuan Hung、Paul W. R. Harris、Amanda M. Heapy、Margaret A. Brimble
DOI:10.1039/c0ob00315h
日期:——
The synthesis of the antimicrobial cyclic peptide xenematide was accomplished by Fmoc solid phase peptide synthesis and the key esterification reaction was achieved using a modified Yamaguchi esterification. Comparison of the opticalrotation and NMR data of the synthesized diastereomers to that of the natural product confirmed the structure of xenematide to be PA-L-[Thr-L-Trp-D-Trp-β-Ala]. (PA = phenylacetyl)
抗菌环肽的合成 塞内马肽通过Fmoc固相肽合成来完成,并且使用改进的Yamaguchi酯化来实现关键的酯化反应。合成的非对映异构体与天然产物的旋光度和核磁共振数据的比较证实了其结构塞内马肽是PA-大号- [Thr-大号-Trp- d -Trp-β丙氨酸]。(PA =苯乙酰基)。