A novel cycloisomerization reaction of enynes 4 in the
presence of ZnBr2 and THF (1 eq.) in
CH2Cl2 at −40 °C gave
exo-methylenic 1,3-dienes 5 in moderate to good yield.
Enabling Wittig reaction on site-specific protein modification
作者:Ming-Jie Han、De-Cai Xiong、Xin-Shan Ye
DOI:10.1039/c2cc35738k
日期:——
An efficient aqueous Wittigreaction was enabled on protein bioconjugation for the first time. By investigating the reaction on small molecules, peptides, and proteins, a site-specific reaction targeting "aldehyde tag" was presented. A variety of functional groups could be introduced into the protein of interest.