169287-69-8Relevant articles and documents
Development of a convenient route for the preparation of the N 2-Cbz-protected guaninyl synthon required for Boc-mediated PNA synthesis
Heuer-Jungemann, Amelie,Howarth, Nicola M.,Ja'Afaru, Saudatu C.,Rosair, Georgina M.
, p. 6275 - 6278 (2013)
An efficient, high yielding, chemo- and regioselective, five-step synthetic route to N2-Cbz-guanin-9-yl acetic acid has been developed, which avoids the use of triphosgene. After formation of the N2-Boc protected purine from 2-amino-6-chloropurine, two successive base-controlled alkylations allowed an N9-tert-butyl acetate function followed by an N2-Cbz moiety to be installed. The selectivities of these reactions were confirmed through an X-ray crystallographic study of the 6-(2-nitrophenoxy) analogue. Final hydrolytic dechlorination and removal of the Boc and tert-butyl ester protecting groups were accomplished concomitantly under acidic conditions to afford the guanin-9-yl PNA monomer synthon in an overall yield of 53%.
Fmoc Mediated Synthesis of Peptide Nucleic Acids.
Thomson, Stephen A.,Josey, John A.,Cadilla, Rodolfo,Gaul, Micheal D.,Hassman, C. Fred,et al.
, p. 6179 - 6194 (2007/10/02)
The syntheses of the Fmoc-protected Peptide Nucleic Acid (PNA) monomer pentafluorophenyl esters of adenine (26), cytosine (23), guanine (29) and thymine (20), and their oligomerization are described.The Fmoc PNA backbone 1 is prepared as a stable hydrochl