申请人:The Trustees of the University of Pennsylvania
公开号:US20150140605A1
公开(公告)日:2015-05-21
The invention includes a selective method of modifying the N-terminus of a protein using an aminoacyl tRNA transferase. In certain embodiments, the method comprises contacting a solution of the protein or peptide with a transferase and a derivative of a molecule, whereby the N-terminus of the protein or peptide is derivatized with the molecule.
Base-Induced Transformation of 2-Acyl-3-alkyl-2<i>H</i>-azirines to Oxazoles: Involvement of Deprotonation-Initiated Pathways
作者:Yingtang Ning、Yuko Otani、Tomohiko Ohwada
DOI:10.1021/acs.joc.7b00904
日期:2017.6.16
intermediate possessing methyl substituents at C(3) appears to be more stable than the tautomeric nitrile ylide which was proposed to be involved in photoinduced and pyrolysis reactions of 2-acyl-3-alkyl-2H-azirines to afford oxazoles. Thus, intermediacy of ketenimine is consistent with both experimental and computational results, at least under strongly basic reaction conditions.