Synthesis of analogs of pepstatin. Effect of structure in subsites P1', P2', and P2 on inhibition of porcine pepsin
作者:Daniel H. Rich、Francesco G. Salituro
DOI:10.1021/jm00360a022
日期:1983.6
A series of pepstatin analogues having structural variations in the P2', P1', and P2 positions have been synthesized and tested for inhibition of porcine pepsin. The standard peptide for this study was Iva-Sta-Val-Ala-Iaa. Structural variations in the P2' and P1' positions have relatively little effect on Ki; however, small variations in the P2 position have a more dramatic effect on Ki and time-dependent
Chemoselective Peptide Backbone Diversification and Bioorthogonal Ligation by Ruthenium‐Catalyzed C−H Activation/Annulation
作者:Liangliang Song、Gerardo M. Ojeda‐Carralero、Divyaakshar Parmar、David A. González‐Martínez、Luc Van Meervelt、Johan Van der Eycken、Jan Goeman、Daniel G. Rivera、Erik V. Van der Eycken
DOI:10.1002/adsc.202100323
日期:2021.7
The field of peptide derivatization by metal-catalyzed C−H activation has been mostly directed to modify the side chains, but poor attention has been given to the peptide backbone. Here we report a ruthenium-catalyzed C−H activation/annulation process that can chemoselectively modify the peptide backbone producing functionalized isoquinolone scaffolds with high regioselectivity in a rapid and step-economical
Ring-closingmetathesis (RCM) with alpha,alpha-diallylglycyl peptides is shown to furnish alpha,alpha-cyclopentenylglycyl peptides as conformationally restrained analogues in the form of post-translational type peptide modification suitable for both peptidomimetic and combinatorial chemistry applications.
Catalytic Enantioselective Ring-Opening and Ring-Closing Reactions of 3-Isothiocyanato Oxindoles and <i>N</i>-(2-Picolinoyl)aziridines
作者:Linqing Wang、Dongxu Yang、Dan Li、Rui Wang
DOI:10.1021/acs.orglett.5b01291
日期:2015.6.19
applied to an asymmetric formal [3 + 3] cycloaddition reaction with aziridines for the first time. The reaction was efficiently mediated by an in situ generated magnesium catalyst employing (R)-3,3′-fluorous-BINOL as a simple chiral ligand. Serials of polycyclic frameworks could be obtained after a ring-closing step. The enantioenriched ring-opening product was also utilized to modified amino acids, peptides
Process for producing self-assembling peptide derivatives
申请人:MENICON CO., LTD.
公开号:US09963483B2
公开(公告)日:2018-05-08
An object of the present invention is to provide a process capable of producing a self-assembling peptide derivative that is useful in the fields of regenerative medicine and surgery in large quantities and in an economical and efficient manner. In particular, provided is a production process employing a combination of (i) a step of convergently constructing a sequence with use of a common repeating unit consisting of a specific amino acid sequence and (ii) a step of first isolating the peptide derivative as a disulfuric acid salt, a tetramethanesulfonic acid salt or a tetra(trifluoroacetic acid (TFA) salt), and then subjecting the peptide salt to a salt exchange reaction to yield a tetrahydrochloric acid salt.