Liquid-phase synthesis of a cyclic hexameric peptide nucleic acid
β Scribed by Geoffrey Depecker; Caroline Schwergold; Christophe Di Giorgio; Nadia Patino; Roger Condom
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- French
- Weight
- 114 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
Suitably protected linear precursors of cyclic PNAs can be readily obtained by BOP/DiPEA coupling of the corresponding sub-monomers. Conversion of the linear PNA dimers into the pentafluorophenyl esters allows cyclization by intramolecular attack of the deprotected primary amino function under dilut
Peptide nucleic acids (PNA) were synthesized by a modified Merrifield method using several improvements. Activation by O-[benzotriazol-1-yl]-1,1,3,3-tetramethyluronium hexafluorophosphate in combination with in situ neutralization of the resin allowed efficient coupling of all four Boc-protected PNA
Boc/'Z-protected PNA oligomers were synthesised on solid phase. The use of the allylic HYCRON resin allowed for the application of both Boc-and Fmoc-protecting groups. Highest yields were obtained when the monomeric building block was synthesised on solid phase rather than loaded as preformed unit.