40356-35-2Relevant academic research and scientific papers
Synthesis and conformational characterization of diketopiperazines bearing a benzyl moiety
Nakao, Michiyasu,Toriuchi, Yuriko,Fukayama, Shintaro,Sano, Shigeki
, p. 340 - 342 (2014/03/21)
Diketopiperazines bearing a benzyl moiety with different para-substituents were synthesized and analyzed by 1HNMR spectroscopy. All of these diketopiperazines were found to adopt a folded conformation according to the upfield chemical shift of the cis-proton (cis to the benzyl moiety) due to a shielding effect in the 1HNMR spectra. An intramolecular CH-π interaction appears to be an important factor for the folded conformation due to the effects of para-substituents on the benzyl group.
5-(1H-benzotriazol-1-yloxy)-3,4-dihydro-1-methyl 2H-pyrrolium hexachloroantimonate (BDMP): A highly efficient immonium type peptide coupling reagent
Li, Peng,Xu, Jie Cheng
, p. 1163 - 1164 (2007/10/03)
HOBt-based immonium type coupling reagent, 5-(1H-benzotriazol-1-yloxy)-3,4-dihydro-1-methyl 2H-pyrrolium hexachloroantimonate (BDMP) has been designed, synthesized and utilized to synthesize oligopeptides and biologically active peptides both in solution
A new coupling reagent for peptide synthesis. Benzotriazolvyloxy-bis (pyrroltdino) -carbonium hexaflouorophosphate (BBC)
Chen, Shaoqing,Xu, Jiecheng
, p. 647 - 650 (2007/10/02)
Benzotriazolyloxy-bis(pyrrolidino)-carbonium hexa- fluorophosphate (BBC) is found to be a new excellent coupling reagent devoid of cytotoxic by-product instead of HBTU and BOP. It has been applied in the solution and solid phase peptide synthesis.
Inhibition of urease activity by dipeptidyl hydroxamic acids
Odake,Nakahashi,Morikawa,Takebe,Kobashi
, p. 2764 - 2768 (2007/10/02)
A series of dipeptidyl hydroxamic acids (H-X-Gly-NHOH: X = amino acid residues) was synthesized, and the inhibitory activity against Jack bean and.Proteus mirabilis ureases [EC 3.5.1.5] was examined. A number of H-X-Gly-NHOH inhibited Jack bean urease wit
PENTAFLUOROPHENYL DIPHENYLPHOSPHINATE A NEW EFFICIENT COUPLING REAGENT IN PEPTIDE CHEMISTRY
Chen, Shaoqing,Xu, Jiecheng
, p. 6711 - 6714 (2007/10/02)
Pentafluorophenyl diphenylphosphinate was found to be a new efficient coupling reagent for the racemization-free synthesis of peptides.It has been applied in both the solution and the solid phase peptide synthesis.
2,2'-CARBONYL-BIS(3,5-DIOXO-4-METHYL-1,2,4-OXADIAZOLIDINE) : I- A NEW REAGENT FOR THE PREPARATION OF CARBAMATES AND AMIDES, APPLICATION TO THE SYNTHESIS OF DIPEPTIDES.
Denarie, Michel,Grenouillat, Denis,Malfroot, Thierry,Senet, Jean-Pierre,Sennyey, Gerard,Wolf, Patrick
, p. 5823 - 5826 (2007/10/02)
2,2'-Carbonyl bis (3,5-dioxo-4-methyl-1,2,4-oxadiazolidine) was prepared and used for the synthesis of various carbamates and dipeptides.
Studies on Amino Acids and Peptides. Part 6. Methods for Introducing Thioamide Bonds into the Peptide Backbone: Synthesis of the Four Monothio Analogues of Leucine Enkephalin
Clausen, Kim,Thorsen, Michael,Lawesson, Sven-Olov,Spatola, Arno F.
, p. 785 - 798 (2007/10/02)
A methodology for preparing peptide analogues in which a thioamide bond replaces the normal amide bond is described.Thus, the synthesis of the three leucine enkephalin analogues 4>-, 2>-, and 1>-leucine enke
An Approach to the Elucidation of Metabolic Breakdown Products of the Luteinizing Hormone-Releasing Hormone
Stetler-Stevenson, Mary Alice,Yang, Dai Chang,Lipkowski, Andrew,McCartney, Linda,Peterson, Darryl,Fluoret, George
, p. 688 - 692 (2007/10/02)
Metabolic breakdown of the luteinizing hormone-releasing hormone (LH-RH) could lead to the following fragments containing pyroglutamic acid: pyroglutamic acid (1), pGlu-His (2), pGlu-His-Trp (3), pGlu-His-Trp-Ser (4), etc., and finally pGlu-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly (10).We have synthesized fragments 2-10 and successfully separated all ten metabolites and LH-RH by high-performance liquid chromatography (HPLC) with μBondapak C18 column.In a test of viability of the method, cochromatography of fragments 1-10 and LH-RH with the products of chymotryptic digestion of tritiated LH-RH showed radioactive peaks corresponding to the expected products, fragments 3 and 5.Analysis of the products of incubation of a rat kidney homogenate supernatant with LH-RH showed fragments 1-4 and LH-RH.The finding of breakdown at position 4 uncovers a new site of LH-RH breakdown and points the way to the design of potential LH-RH antagonists and agonists where the 4 position would be substituted with unnatural amino acids to prevent breakdown.
