Oxime Carbonates: Novel Reagents for the Introduction of Fmoc and Alloc Protecting Groups, Free of Side Reactions
作者:Sherine N. Khattab、Ramon Subirós-Funosas、Ayman El-Faham、Fernando Albericio
DOI:10.1002/ejoc.201000028
日期:2010.6
Fmoc and Allocprotectinggroups represent a consistent alternative to classical Boc protection in peptide chemistry. The former was established in the last decades as the α-amino protectinggroup of choice, whereas the latter allows a fully orthogonal protection strategy with Fmoc and Boc. Usually, the introduction of the Fmoc and Alloc moieties takes place through their halogenoformates, azides,
[EN] LINKERS FOR USE IN ANTIBODY DRUG CONJUGATES<br/>[FR] LIEURS DESTINÉS À ÊTRE UTILISÉS DANS DES CONJUGUÉS ANTICORPS-MÉDICAMENT
申请人:[en]ORUM THERAPEUTICS, INC.
公开号:WO2023037268A1
公开(公告)日:2023-03-16
The present disclosure provides traceless linkers, which can link an inducer of protein-protein interaction to a cell binding agent. Also provided are compositions comprising the linked compounds. The compounds and compositions are useful for treating diseases such as cancer in subjects in need thereof.
Benzotriazole Reagents for the Syntheses of Fmoc-, Boc-, and Alloc-Protected Amino Acids
Stable Fmoc-, Boc-, and Alloc-benzotriazoles react with various amino acids including unprotected serine and glutamic acid, in the presence of triethylamine at 20 ËC as reagents to introduce α-amino protecting groups to afford Fmoc-, Boc-, and Alloc-protected amino acids (77-94%) free of dipeptide and tripeptide impurities. Fmoc-, and Alloc-Gly-Gly-OH dipeptides were prepared in 90% yields by N-acylation of glycylglycine with Fmoc- and Alloc-benzotriazoles in the presence of triethylamine. Synthesized N-protected amino acids were greater than 99% pure, analyzed by HPLC.
Total chemical synthesis of human thyroid-stimulating hormone (hTSH) β-subunit: Application of arginine-tagged acetamidomethyl (AcmR) protecting groups
作者:John A. Brailsford、Jennifer L. Stockdill、Abram J. Axelrod、Michael T. Peterson、Paul A. Vadola、Eric V. Johnston、Samuel J. Danishefsky
DOI:10.1016/j.tet.2018.02.067
日期:2018.4
synthesized as a single glycoform bearing a chitobiose disaccharide at the native glycosylation site. Key to the successful completion of this synthesis was the introduction of an arginine-tagged acetamidomethylgroup, which served to greatly facilitate handling of a glycopeptide fragment with poor aqueous solubility. This general solution to the challenge of working with intractable peptides is expected