From Cyclic Peptoids to Peraza-macrocycles: A General Reductive Approach
摘要:
Peraza-macrocycles form chelates of high thermodynamic and kinetic stability useful in diagnostic imaging (MRI, SPECT, PET), in coordination chemistry, and as catalysts. In this letter, we report an advantageous method to prepare these compounds via BH3-induced reduction of cyclic peptoids. Using this procedure, 10 homo- and heterosubstituted aza-coronands, with different sizes and side chains, have been synthesized from the corresponding cyclic oligoamides. Solid structures of free, protonated, and Na+ coordinated polyaza-derivatives have been disclosed by single crystal X-ray diffraction analysis.
Design, synthesis and antimicrobial properties of non-hemolytic cationic α-cyclopeptoids
作者:Daniela Comegna、Monica Benincasa、Renato Gennaro、Irene Izzo、Francesco De Riccardis
DOI:10.1016/j.bmc.2010.01.026
日期:2010.3
The synthesis and screening of neutral and cationic, linear and cyclic peptoids (N-alkylglycine peptidomimetics) is described. Structure–activity relationship studies show that the in vitro activities of the tested peptoids depend on both cyclization and decoration with cationic groups. The most powerful N-lysine cyclopeptoid derivatives showed good antifungal activity against Candida albicans (ATCC90029