Chemistry for the synthesis of nucleobase-modified peptide nucleic acid

• Published in: Pure and applied chemistry Vol. 76; no. 7; pp. 1591 - 1598
• Main Authors: Hudson, R. H. E., Viirre, R. D., Liu, Y. H., Wojciechowski, F., Dambenieks, A. K.
• Format: Journal Article
• Language: English
• Published: Berlin De Gruyter 01-01-2004; Walter de Gruyter GmbH
• Subjects: Cell membranes; Chemical synthesis; Conjugation; Cross coupling; Derivatives; Oligomers; Organic chemistry; Peptides; Pyrimidines; Uracil
• ISSN: 0033-4545; 1365-3075
• DOI: 10.1351/pac200476071591

Peptide nucleic acid (PNA) presents a versatile scaffold for chemical modifications that may benefit its solubility and hybridization properties, conjugation chemistry, cell membrane permeability, and so forth. We have employed straightforward chemical methods for the synthesis of PNA monomers containing C5-or C6-modified pyrimidines.The C5-modified pyrimidines are based on 5-hydroxymethyl-uracil or cytosine, or are achieved by cross-coupling from the 5-iodonucleobase derivatives, while C6 modifications are accessed from 6-carboxyuracil (orotic acid). We have also developed an on-resin activation/conversion of uracil-containing PNA oligomers to
-cytosine-containing derivatives.