Synthesis of the Isotopically LabelledC-Terminal Fragment of Zervamicin: An Approach to the Synthesis of Aib-Containing Peptides
作者:Alexei Ogrel、Wim Bloemhoff、Johan Lugtenburg、Jan Raap
DOI:10.1002/jlac.199719970109
日期:1997.1
The isotopically labelled C-terminal fragment of zervamicin, H-Hyp10-[4,4-2H2-Gln]-Aib-Hyp-Aib-Pro-Phl16, has been synthesized in solution by a Fmoc/tert-butyl strategy in 28% overall yield. The Fmoc group was removed by reaction for 2 min with 0.1 M NaOH in dioxane/methanol/water, (30:9:1, v:v:v). The couplings of the sterically hindered Aib residues were achieved by means of either BOP/DMAP activation
通过Fmoc /叔丁基在溶液中合成了zervamicin的同位素标记的C末端片段,H-Hyp 10- [4,4- 2 H 2 -Gln] -Aib-Hyp-Aib-Pro-Phl 16整体收益率为28%的策略。通过与0.1M NaOH在二恶烷/甲醇/水中的反应2分钟(30:9:1,v:v:v)除去Fmoc基团。通过BOP / DMAP激活或Fmoc-Aib-Cl可以实现位阻Aib残基的偶联。通过与CH 2 Cl 2中的50%TFA反应30分钟来进行肽的酸脱保护,而对酸不稳定的Aib-Pro和Aib-Hyp肽键没有明显的裂解。