Azidopeptide Nucleic Acid. An Alternative Strategy for Solid-Phase Peptide Nucleic Acid (PNA) Synthesis

2003 ◽  
Vol 5 (23) ◽  
pp. 4445-4447 ◽  
Author(s):  
François Debaene ◽  
Nicolas Winssinger

2019 ◽  
Vol 16 (5) ◽  
pp. 437-446
Author(s):  
Ahmed S. Abdelbaky ◽  
Ivan A. Prokhorov ◽  
Igor P. Smirnov ◽  
Kristina M. Koroleva ◽  
Vitaliy I. Shvets ◽  
...  

One of the major challenges facing modern biochemical and biomedical technologies are finding molecular tools for diagnosis and detection of genetic diseases. In this connection, several classes of oligonucleotides have been developed that can recognize and bind to DNA and RNA with high affinity and sequence selectivity and withstand enzymatic degradation by proteases and nucleases; however, few can traverse the cell membrane on their own. One such promising class of nucleic acid mimics developed in the last two decades which showed good results in vitro, are the peptide nucleic acids (PNAs). New chiral α- and γ-peptide Nucleic Acid (PNA) submonomer with methyl substituents in pseudopeptide backbone were synthesized via Mitsunobu reaction. The α-(R)-/γ-(S)-configuration of the chiral centres will ensure the preorganization of the PNA oligomer into a right-handed helix. The results obtained showed that Boc/Fmoc-submonomer compatible with Boc-protocol PNAs solid-phase synthesis on an MBHA resin. We synthesized simple and efficient α-R-, γ-S-disubstituted PNA submonomer based on L-Ala and D-Ala with the construction of the intermediate pseudopeptide moiety by Mitsunobu reaction for subsequent use in the Boc-Protocol of solid phase PNA synthesis.



2019 ◽  
Vol 168 ◽  
pp. 134-145 ◽  
Author(s):  
Anna Mette Hansen ◽  
Gitte Bonke ◽  
Wouter Frederik Johan Hogendorf ◽  
Fredrik Björkling ◽  
John Nielsen ◽  
...  


2011 ◽  
Vol 64 (3) ◽  
pp. 265 ◽  
Author(s):  
Gilles Gasser ◽  
Anna M. Sosniak ◽  
Anna Leonidova ◽  
Henrik Braband ◽  
Nils Metzler-Nolte

A novel azido derivative of the di-(2-picolyl)amide (Dpam) ligand, namely 3-azido-N,N-bis-pyridin-2-ylmethyl-propionamide (3), was prepared from 3-bromo-N,N-bis(pyridin-2-ylmethyl)propanamide (2) with an excess of sodium azide in DMSO. 3 was then reacted, by CuI-catalyzed [3 + 2] cycloaddition (often referred to as ‘Click Chemistry’), with the previously reported alkyne-containing peptide nucleic acid (PNA) monomer Fmoc-1-OtBu to give the Dpam-containing PNA monomer (Fmoc-4-OtBu) in 44% yield. It was also demonstrated that 3 could be reacted by Click Chemistry, on the solid phase, to an alkyne-containing PNA oligomer (Alkyne-PNA) to yield Dpam-PNA. Our attempts to complex Dpam-PNA with [NEt4]2[ReBr3(CO)3] and [99mTc(CO)3(H2O)3]+ are also discussed in detail.



2006 ◽  
Vol 17 (2) ◽  
pp. 551-558 ◽  
Author(s):  
Baghavathy S. Balaji ◽  
Fabio Gallazzi ◽  
Fang Jia ◽  
Michael R. Lewis


2012 ◽  
Vol 65 (5) ◽  
pp. 539 ◽  
Author(s):  
Elisse C. Browne ◽  
Steven J. Langford ◽  
Belinda M. Abbott

A convenient and cost-effective method for the synthesis of Fmoc/Boc-protected peptide nucleic acid monomers is described. The Fmoc/Boc strategy was developed in order to eliminate the solubility issues during peptide nucleic acid solid-phase synthesis, in particular that of the cytosine monomer, that occurred when using the commercialized Bhoc chemistry approach.







Author(s):  
Lynn Mayfield ◽  
Revathi Katipally ◽  
Carla Simmons ◽  
David R. Corey


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