期刊
NEW JOURNAL OF CHEMISTRY
卷 43, 期 32, 页码 12804-12813出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9nj02234a
关键词
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资金
- CONICYT FONDECYT [3170003]
- FONDECYT project [3170003]
- TWAS-CNPq [3240266234]
- HEC Pakistan [21-2037/SRGP/R D/HEC/2018]
- CONICYT/FONDECYT Iniciacion grant [11180984]
- NLHPC [ECM-02]
- CONICYT FONDECYT/INACH/POSTDOCTORADO [3170107]
The current work provides a study on the cis-trans isomerization behaviour of N-alkylated peptides decorated with phosphonate ester groups. A Ugi four-component reaction was chosen for the synthesis of N-alkylated peptides, where almost only the cis isomer was detected when the phosphonate ester group was incorporated as an amine component in the side chain. However, the phosphonate ester group inserted in the backbone, as an isocyanide component, leads preferably to the trans isomer of this kind of peptides. The diverse behaviour of cis-trans isomerization has been explained via spectroscopic nuclear magnetic resonance analysis and computational calculations.
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