Expanding the scope of PNA-encoded libraries: divergent synthesis of libraries targeting cysteine, serine and metallo-proteases as well as tyrosine phosphatases
摘要:
Seven PNA-encoded combinatorial libraries targeting proteases and phosphatases with covalent reversible and irreversible mechanism-based inhibitors were prepared. The libraries were synthesized using modified PNA monomers, which dramatically increase the water solubility of the libraries in biologically relevant buffers. The libraries were shown to selectively inhibit targeted enzymes. (c) 2007 Elsevier Ltd. All rights reserved.
A highly selective protocol for the deprotection of BOC-protected amides and carbamates
摘要:
A BOC-protected amide or carbamate undergoes mild and selective deprotection by treatment with catalytic Mg(ClO4)(2) in acetonitrile. Simple BOC-protected amines are not affected by these conditions.
nucleic acids (PNAs) hybridize to natural oligonucleotides according to Watson and Crick base-pairing rules. The robustness of PNA oligomers and ease of synthesis have made them an attractive platform to encode small or macromolecules for microarraying purposes and other applications based on programmable self assembly. A cornerstone of these endeavors is the orthogonality of PNAsynthesis with other chemistries