Synthesis of novel β-aminocyclobutanecarboxylic acid derivatives by a solvent-free aza-Michael addition and subsequent ring closure [PDF]
, 2011 Novel beta-aminocyclobutanecarboxylic acid derivatives were prepared via a sequential solvent-free aza-Michael addition of benzophenone imine across 3-halopropylidenemalonates and base-induced ring closure.
Aitken +44 more
core +1 more source
Free Energies of Reaction for Aqueous Glycine Condensation Chemistry at Extreme Temperatures
Geophysical Monograph Series, Page 271-283., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Matthew Kroonblawd, Nir Goldman
wiley +1 more source
Efficient Microwave Assisted Syntheses of 2,5-Diketopiperazines in Aqueous Media
Molecules, 2009 Aqueous in situ one-pot N-Boc-deprotection-cyclization of Nα-Boc-dipeptidyl-tert-butyl and methyl esters under microwave irradiation afforded 2,5-diketopiperazines (DKPs) in excellent yields.
María Yolanda Rios +3 more
doaj +1 more source
Making Blank Faces Expressive: Chemical Approaches to the Modification of Chemically Inert Peptides. [PDF]
J Pept SciAs an alternative to the conventional approach, which combines amino acid monomers in a one‐by‐one fashion to peptide derivatives, the chemical modification of existing peptides has attracted significant attention in recent years. However, such approaches generally target the reactive functional groups in cysteine and lysine residues, particularly in ...
Moriyama Y, Sada H, Nanjo T.
europepmc +2 more sources
Cyclodipeptide oxidase is an enzyme filament
Nature CommunicationsModified cyclic dipeptides represent a widespread class of secondary metabolites with diverse pharmacological activities, including antibacterial, antifungal, and antitumor.
Michael P. Andreas, Tobias W. Giessen
doaj +1 more source
Solvent and thermal stability, and pH kinetics, of proline-specific dipeptidyl peptidase IV-like enzyme from bovine serum [PDF]
, 2007 Proline-specific dipeptidyl peptidase-like (DPP IV; EC 3.4.14.5) activity in bovine serum has attracted little attention despite its ready availability and the paucity of useful proline-cleaving enzymes.
Abbott +43 more
core +1 more source
, 2007 We present an exhaustive study of more than 250 ab initio potential energy surfaces (PESs) of the model dipeptide HCO-L-Ala-NH2. The model chemistries (MCs) used are constructed as homo- and heterolevels involving possibly different RHF and MP2 ...
Alonso, J. L., Echenique, Pablo
core +2 more sources
Isolation, purification, and characterization of five active diketopiperazine derivatives from endophytic streptomyces SUK 25 with antimicrobial and cytotoxic activities [PDF]
, 2017 In our search for new sources of bioactive secondary metabolites from Streptomyces sp., the ethyl acetate extracts from endophytic Streptomyces SUK 25 afforded five active diketopiperazine (DKP) compounds.
Ahmad, Siti Junaidah +6 more
core +1 more source
Energetics of Cyclic Dipeptide Crystal Packing and Solvation
Biophysical Journal, 1997 Calculations of the thermodynamics of transfer of the cyclic alanine-alanine (cAA) and glycine-glycine (cGG) dipeptides between the gas, water, and crystal phases were carried out using a combination of molecular mechanics, normal mode analysis, and continuum electrostatics. The experimental gas-to-water solvation free energy and the enthalpy of gas-to-
Brady, G.Patrick, Sharp, Kim A.
openaire +2 more sources
The ageing holobiont: crosstalk between telomere dynamics, oxidative stress and the gut microbiome
Biological Reviews, EarlyView.ABSTRACT The gut tissue is at the frontline of early onset of ageing. It exhibits high cell turnover rates and rapid telomere shortening, which can have systemic effects on the developing or senescing organism. We conducted a literature review of studies on the crosstalk between telomere length dynamics, telomerase activity, oxidative stress, and gut ...
Michael L. Pepke +2 more
wiley +1 more source