Building Units for N-Backbone Cyclic Peptides. 3. Synthesis of Protected Nα-(ω-Aminoalkyl)amino Acids and Nα-(ω-Carboxyalkyl)amino Acids
摘要:
An improved synthesis of a family of amino acids that contain omega-aminoalkyl groups and of a new family containing omega-carboxyalkyl groups linked to the alpha-amine is described. The synthesis was performed by alkylation of suitably monoprotected alkylenediamines and protected omega-amino acids with triflates of alpha-hydroxy acid esters. The reaction proceeded with inversion of configuration yielding optically pure products. The N-alpha-(omega-aminoalkyl)amino acids and N-alpha-(omega-carboxyalkyl)amino acids were orthogonally protected to allow their incorporation into peptides by solid-phase peptide synthesis (SPPS) methodology.
Flow and Microwave-Assisted Synthesis of <i>N</i>-(Triethylene glycol)glycine Oligomers and Their Remarkable Cellular Transporter Activities
作者:ThingSoon Jong、Ana M. Pérez-López、Emma M. V. Johansson、Annamaria Lilienkampf、Mark Bradley
DOI:10.1021/acs.bioconjchem.5b00307
日期:2015.8.19
respectively. These were converted into oligomers (5, 7, and 9-mers) using an Fmoc-based solid-phase protocol and evaluated as cellular transporters. Hybrid oligomers, constructed of alternating units of the aminohexyl and amino-TEG monomers, were non-cytotoxic and exhibited remarkable cellular uptake activity compared to the analogous fully TEG or lysine-like compounds.
Peptoid dendrimers—microwave-assisted solid-phase synthesis and transfection agent evaluation
作者:Juan J. Diaz-Mochon、Mario A. Fara、Rosario M. Sanchez-Martin、Mark Bradley
DOI:10.1016/j.tetlet.2007.11.122
日期:2008.1
Three generations of peptoid-based dendrimers were synthesised by solid-phase methods, using N-Fmoc-N-(6-N'-Fmoc-aminohexyl)glycine as both the initiator core and the monomer unit, which offer an unusual dendrimeric periphery composed of both secondary and primary amines. The third generation compound proved to be an efficient mediator of transfection while displaying minimal cytotoxicity. (C) 2007 Elsevier Ltd. All rights reserved.
Building units for N-backbone cyclic peptides. 1. Synthesis of protected N-(.omega.-aminoalkylene)amino acids and their incorporation into dipeptide units
作者:Gerardo Byk、Chaim Gilon
DOI:10.1021/jo00047a022
日期:1992.10
A variety of new amino acids which contain an omega-aminoalkylene group on the N(alpha)-amino nitrogen were synthesized by alkylation of alkylenediamines with alpha-halogeno acids. The reaction proceeds with inversion of configuration; thus, optically pure products were obtained when optically active a-halogeno acids were used. The N-(omega-aminoalkylene)amino acids were protected by orthogonal protecting groups to allow their incorporation into dipeptides by the "solution" techniques and into peptides by the solid-phase peptide synthesis (SPPS) methodology. A series of dipeptide analogs of Phe-Gly, Leu-Gly, Trp-Gly, Phe-Leu, and Phe-Ala in which the nitrogen of the peptide bond is alkylated by omega-aminoalkylene chains with various lengths were prepared. These new protected N-(omega-aminoalkylene)amino acids and their derived dipeptide units may be used as building blocks for conformationally constrained N-backbone cyclic peptides.
Cell penetrable peptoid carrier vehicles: synthesis and evaluationElectronic supplementary information (ESI) available: experimental details. See http://www.rsc.org/suppdata/cc/b3/b306438g/
作者:Ilaria Peretto、Rosario M. Sanchez-Martin、Xui-hong Wang、John Ellard、Stifun Mittoo、Mark Bradley
DOI:10.1039/b306438g
日期:——
Using a highly efficient solid-phase route a series of fluorescein conjugated peptoid oligomers were synthesised and observed to display remarkable cell penetrating properties, offering the possibility of highly efficient cellular targeting.
Building Units for N-Backbone Cyclic Peptides. 3. Synthesis of Protected <i>N</i><sup>α</sup>-(ω-Aminoalkyl)amino Acids and <i>N</i><sup>α</sup>-(ω-Carboxyalkyl)amino Acids
作者:Dan Muller、Irena Zeltser、Gal Bitan、Chaim Gilon
DOI:10.1021/jo961580e
日期:1997.1.1
An improved synthesis of a family of amino acids that contain omega-aminoalkyl groups and of a new family containing omega-carboxyalkyl groups linked to the alpha-amine is described. The synthesis was performed by alkylation of suitably monoprotected alkylenediamines and protected omega-amino acids with triflates of alpha-hydroxy acid esters. The reaction proceeded with inversion of configuration yielding optically pure products. The N-alpha-(omega-aminoalkyl)amino acids and N-alpha-(omega-carboxyalkyl)amino acids were orthogonally protected to allow their incorporation into peptides by solid-phase peptide synthesis (SPPS) methodology.