59524-07-1Relevant academic research and scientific papers
Facile access to α,β-dehydroalanine and α,β-dehydroamino butyric acid derivatives from DL-serines and threonines
Yang, Yong-Qing,Ji, Meng-Chen,Lu, Zheng,Jiang, Mao,Huang, Wei-Wei,He, Xue-Zhi
supporting information, p. 977 - 982 (2016/07/12)
ABSTRACT: Not only α,β-dehydroamino acids are important constituents for a number of bioactive peptides in nature, but also they are important building blocks for a variety of synthetic amino acids in organic synthesis. Methods to prepare dehydroamino aci
Biomimetic seleninates and selenonates
Abdo, Mohannad,Knapp, Spencer
supporting information; body text, p. 9234 - 9235 (2009/02/02)
The synthesis of a variety of pyranose-, nucleoside-, (amino acid)-, and polyhydric-based seleninic and selenonic acids by DMDO oxidation of the corresponding selenoesters is reported, as well as some unusual coupling reactions of the seleninate and selenonate functionality with biological nucleophilic groups (sulfhydryl, indole, phenol, imidazole, carboxamide) that are found in proteins and enzyme active sites. Copyright
An efficient synthesis of dehydroamino acids and dehydropeptides from O-Cbz and O-Eoc derivatives of serine and threonine
Ramesh, Ramapanicker,De, Kavita,Chandrasekaran, Srinivasan
, p. 10534 - 10542 (2008/02/13)
A simple and efficient method for the synthesis of dehydroamino acids from serine and threonine is reported. Various O-Cbz and O-Eoc derivatives of serine and threonine are prepared using CbzCl and EocCl, respectively, and are subjected to an anti-selective elimination on treatment with K2CO3 in DMF at 65 °C to afford dehydroalanine and dehydroamino butyric acid derivatives, respectively, in excellent yields. The high stability of these carbonate derivatives of serine and threonine allows their use in normal peptide synthesis as protected serine and threonine residues. Peptides synthesized by incorporating O-Cbz or O-Eoc derivatives undergo ready elimination under the reported conditions, to give the corresponding dehydropeptides in excellent yields. The reaction conditions are mild enough not to cause the racemization of other stereogenic centers present in the peptide.
The synthesis and properties of Gla- and Phe-containing analogues of cyclic RGD pentapeptides
Davies, John S.,Enjalbal, Christine,Nguyen, Corrine,Al-Jamri, Loai,Naumer, Christian
, p. 2907 - 2915 (2007/10/03)
Cyclopentapeptides containing the Arg-Gly-Asp motif have been synthesised using solid-phase assembly of side-chain-protected linear precursors, followed by solution-phase cyclisation. The replacement of the Asp residue by γ-carboxyglutamic acid (Gla) is a novel feature which gives rise to an analogue which inhibits cell adhesion, yet its congeners do not show activity in binding assays with recombinant integrin receptors. NMR techniques support a β/γ-turn conformation in most of the analogues. The Royal Society of Chemistry 2000.
Iminophosphorane-mediated synthesis of 2-aminoimidazole derivatives
Molina, Pedro,Conesa, Carlota,Velasco, M. Desamparados
, p. 1459 - 1462 (2007/10/03)
A one-flask synthesis of 2-aminoimidazole derivatives based on the aza-Wittig reaction of alkyl 2-amino-3-azidoacrylates with isocyanates is described.
Studies Directed Towards the Total Synthesis of Anticapsin and Related Compounds. II. Diels-Alder Addition of N-Acyl Dehydroalanine Esters to 1-Trimethylsilyloxycyclohexa-1,3-diene
Crossley, Maxwell J.,Stamford, Andrew W.
, p. 1695 - 1712 (2007/10/02)
In a study directed towards the total synthesis of anticapsin and related compounds, the Diels-Alder addition of N-acyl dehydroalanine esters (15)-(19) to 1-trimethylsilyloxycyclohexa-1,3-diene (6) was investigated.The cycloadditions were highly regiosele
ONE-STEP STEREOSPECIFIC SYNTHESIS OF α,β-DEHYDROAMINO ACIDS AND DEHYDROPEPTIDES
Berti, Federico,Ebert, Cynthia,Gardossi, Lucia
, p. 8145 - 8148 (2007/10/02)
Dehydroamino acids and dehydropeptides were prepared by a one-pot reaction employing diethyl chlorophosphate in the presence of sodium hydride.The reaction is stereospecific and proceeds without racemization.
Preparation of dehydroalanine peptides from bis-(2,2,2-trichloroethyl) and diphenyl phosphonoserine derivatives
Paquet
, p. 5269 - 5272 (2007/10/02)
Preparation of dehydroalanine peptides from corresponding bis-(2,2,2-trichloroethyl) and diphenyl phosphonoserine derivatives by treatment with various organic bases is described.
Stereospezific Synthesis of α,β-Dehydroamino Acids from β-Hydroxy α-Amino Acid Derivatives
Somekh, Lila,Shanzer, Abraham
, p. 907 - 908 (2007/10/02)
A series of protected β-hydroxy α-amino acids have been converted stereospecifically to their dehydro derivatives by treatment with (diethylamino)sulfur trifluoride and pyridine, threo isomers giving rise to the Z derivatives and erythro isomers to the E derivatives.
