Benzotriazole-Mediated Synthesis of Aza-peptides: En Route to an Aza-Leuenkephalin Analogue
作者:Nader E. Abo-Dya、Suvendu Biswas、Akash Basak、Ilker Avan、Khalid A. Alamry、Alan R. Katritzky
DOI:10.1021/jo302251e
日期:2013.4.19
with an ester bond 26b, and a hybrid azatripeptide with an ester bond 28. A new protocol for the synthesis of N-Pg-azatripeptides 33a,b and 35a,b, each containing a natural amino acid at the N-terminus, avoids the low coupling rates of the aza-amino acid residue and enables the solution-phase synthesis of an azaphenylalanine analogue of Leu-enkephalin 40.
A new class of thermoresponsive dendronized polypeptides was prepared through highly efficient oxime ligation between oxyamino-substituted polylysines and aldehyde-cored oligoethylene glycol (OEG) dendrons. Their secondarystructures and thermoresponsive behavior were investigated. Because of the dendritic structures and stable oxime linkage, these OEG-based dendronized polypeptides exhibited fast
A DNA‐Encoded Chemical Library Incorporating Elements of Natural Macrocycles
作者:Cedric J. Stress、Basilius Sauter、Lukas A. Schneider、Timothy Sharpe、Dennis Gillingham
DOI:10.1002/anie.201902513
日期:2019.7.8
Here we show a seven‐step chemical synthesis of a DNA‐encodedmacrocyclelibrary (DEML) on DNA. Inspired by polyketide and mixed peptide‐polyketide natural products, the library was designed to incorporate rich backbone diversity. Achieving this diversity, however, comes at the cost of the custom synthesis of bifunctional building block libraries. This study outlines the importance of careful retrosynthetic
In an attempt to synthesize potential anticancer agents acting by inhibition of topoisomerase I (Topo I) a new series of oxyiminomethyl derivatives in position 7 of camptothecin (CPT) was prepared. The synthesis relied on the condensation of 20S-CPT-7-aldehyde or 20S-CPT-7-ketones with alkyl, aryl, heteroaryl, arylalkyl, and heteroarylalkyl O-substituted hydroxylamines. The compounds were tested for
[EN] SYNTHESIS OF RESORCYLIC ACID LACTONES USEFUL AS THERAPEUTIC AGENTS<br/>[FR] SYNTHÈSE DE LACTONES D'ACIDE RÉSORCYLIQUE UTILES EN TANT QU'AGENTS THÉRAPEUTIQUES
申请人:UNIV STRASBOURG
公开号:WO2009091921A1
公开(公告)日:2009-07-23
Disclosed are macrocyclic compounds of formulae I, I', II, II', III, III', IV, and V, which are analogs of the pochonin resorcylic acid lactones, pharmaceutical compositions comprising the compounds, and methods and uses comprising the compounds for the treatment of diseases mediated by kinases and Heat Shock Protein 90 HSP90.