The Cu(I)-catalyzed Huisgen [3+2] cycloaddition is the basis of click chemistry to synthesize triazole derivatives by coupling azides with ethynyl blocks. In the development of new compounds inspired by bioactive natural products, the synthesis of new oxazole building blocks containing azide moiety and coupling them with aromatic alkynes via triazole linker is described. These oxazole building blocks are synthesized using amino acids as chiral and inexpensive starting materials. Using this approach, 16 new triazole-oxazole hybrids were synthesized.
Key words
alkynes - azides - heterocycles - peptides - ring closure
