A Dual Wavelength Polymerization and Bioconjugation Strategy for High Throughput Synthesis of Multivalent Ligands
作者:Zihao Li、Shashank Kosuri、Henry Foster、Jarrod Cohen、Coline Jumeaux、Molly M. Stevens、Robert Chapman、Adam J. Gormley
DOI:10.1021/jacs.9b09899
日期:2019.12.18
side chain of linear polymers or the α-chain end of star polymers. Polymerizations are performed under visible light using an oxygen tolerant porphyrin-catalyzed photoinduced electron/energy transfer-reversible addition-fragmentation chain-transfer (PET-RAFT) process, after which the deprotection and click reaction is triggered by UV light. Using this approach, we are able to precisely control the valency
Diverse organo-peptide macrocyclesvia a fast and catalyst-free oxime/intein-mediated dual ligation
作者:Maragani Satyanarayana、Francesca Vitali、John R. Frost、Rudi Fasan
DOI:10.1039/c1cc13533c
日期:——
MacrocyclicOrgano-PeptideHybrids (MOrPHs) can be prepared from geneticallyencoded polypeptides via a chemoselective and catalyst-free reaction between a trifunctional oxyamino/amino-thiol syntheticprecursor and an intein-fusion protein incorporating a bioorthogonal keto group.
Dual Hypervalent Iodine(III) Reagents and Photoredox Catalysis Enable Decarboxylative Ynonylation under Mild Conditions
作者:Hanchu Huang、Guojin Zhang、Yiyun Chen
DOI:10.1002/anie.201502369
日期:2015.6.26
combination of hypervalentiodine(III) reagents (HIR) and photoredoxcatalysis with visible light has enabled chemoselective decarboxylativeynonylation to construct ynones, ynamides, and ynoates. This ynonylation occurs effectively undermild reaction conditions at room temperature and on substrates with various sensitive and reactive functional groups. The reaction represents the first HIR/photoredox dual
Specific enrichment of nonribosomal peptide synthetase module by an affinity probe for adenylation domains
作者:Fumihiro Ishikawa、Hideaki Kakeya
DOI:10.1016/j.bmcl.2013.12.082
日期:2014.2
(NRPS)-polyketide synthase (PKS) hybrids and NRPSs. A 5′-O-sulfamoyladenosine (AMS) non-hydrolyzableanalogue of adenosine monophosphate (AMP) has been reported as a scaffold for the design of inhibitors exhibiting tight binding of adenylation enzymes. Here we describe the application of an affinity probe for A domains. Our synthetic probe, a biotinylated l-Phe-AMS (l-Phe-AMS-biotin) specifically targets the
protected form have a cytotoxic effect on cancer cells in the tested concentration range. The presence of additional amide groups in the linker structure improves the activity of glycoconjugates, probably due to the ability to chelate metal ions present in many types of cancers. The study of metal complexingproperties confirmed that the obtained glycoconjugates are capable of chelating copper ions, which