Convenient Method for the Synthesis of a Flexible Cyclic Polyamide for Selective Targeting of c-myb G-quadruplex DNA
摘要:
A convenient efficient method for synthesis of a flexible cyclic polyamide (c beta, 1) was developed through cyclodimerization. Electrospray ionization mass spectrometry and nuclear magnetic resonance results showed that 1 selectively binds to the c-myb G-quadruplex with high affinity, and there was no binding with the ILPR, bcl-2, and c-kit G-quadruplexes. This is the first time that a flexible cyclic polyamide was found to have high selectivity for the c-myb G-quadruplex.
Synthesis of G-quadruplex-targeting flexible macrocyclic molecules via click reaction
作者:Qiang Zhang、Wei Tan、G. Yuan
DOI:10.3998/ark.5550190.p008.384
日期:——
Four flexible macrocycles, such as cTz (1), cTN (2), cPT (3), and cPTN (4), were efficiently synthesized through cyclodimerizing triazo-alkynyl-containing monomers via Cu(I)-catalyzed clickreactions with optimized conditions. The starting materials were pyrrole and triazole derivatives containing amine and carboxyl groups, followed by amide coupling to introduce the triazo and alkynyl groups to prepare
Identification of a Pyrrole Intermediate Which Undergoes C‐Glycosidation and Autoxidation to Yield the Final Product in Showdomycin Biosynthesis
作者:Daan Ren、Minje Kim、Shao‐An Wang、Hung‐wen Liu
DOI:10.1002/anie.202105667
日期:2021.7.26
decarboxylation and deamination to afford showdomcyin after exposure to air. These results suggest that showdomycin could be an artifact due to aerobic isolation; however, the autoxidation may also serve to convert an otherwise inert product of the biosynthetic pathway to an electrophilic C-nucleotide thereby endowing showdomycin with its observed bioactivities.