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Domino reactions with fluorinated five-membered heterocycles. α-Trifluoromethyl α-amino acids with unsaturated side-chains
ArticleAbstract: α-Trifluoromethyl α-amino acids with unsaturated side-chains have been prepared from 5-fluoro-4-trifPalabras claves:5-Fluoro-4-trifluoromethyloxazoles, Allyl alcohols, Claisen rearrangement, Farnesol, Geraniol, nucleophilic aromatic substitution, Propargyl alcohols, secondary structure, α-Trifluoromethyl α-amino acidsAutores:Alberício F., Burger K., Hennig L., Jan Spengler, Koksch B., Tsouker P.Fuentes:googlescopusHexafluoroacetone as a protecting and activating reagent: Synthesis of new types of fluoro-substituted α-amino, α-hydroxy and α-mercapto acids
ArticleAbstract: Starting from (S)-aspartic, (S)-malic, (S)-citramalic and (S,R)-thiomalic acid, new types of 4,4-difPalabras claves:amino acids, Fluorine, Hydroxy acids, Mercapto acids, PeptidesAutores:Berger S., Burger K., El-Kousy S.M., Hennig L., Jan Spengler, Koksch B., Lange T., Osipov S.N., Tsouker P.Fuentes:googlescopusL-α-Methylhomoisoserine: A New Versatile Building Block for Peptide and Depsipeptide Modification
ArticleAbstract: An efficient access to L-α-methylhomoisoserine derivatives starting from L-citramalic acid is descriPalabras claves:Amino acid hydroxamates, Arndt-Eistert synthesis, Citramalic acid, Curtius rearrangement, Hexafluoroacetone, Wolff rearrangement, γ-amino-α-hydroxy-α -methylbutyric acidAutores:Burger K., El-Kousy S.M., Jan Spengler, Koksch B., Radics G.Fuentes:googlescopusSimple machine-assisted protocol for solid-phase synthesis of depsipeptides
ArticleAbstract: A straightforward machine-assisted protocol for the synthesis of linear depsipeptides is reported. TPalabras claves:Automated solid-phase depsipeptide synthesis, Ester peptides, Helical coiled coil peptidesAutores:Alberício F., Jan Spengler, Koksch B.Fuentes:scopusSynthesis of α-trifluoromethyl α-amino acids with aromatic, heteroaromatic and ferrocenyl subunits in the side chain
ArticleAbstract: 5-Benzyloxy-4-trifluoromethyl-1,3-oxazoles, obtained from 5-fluoro-4-trifluoromethyloxazoles and benPalabras claves:1,3-Benzyl group migration versus Claisen rearrangement, 5-Fluoro-4-trifluoromethyl-1,3-oxazoles, Nucleophilic heteroaromatic substitution, Synthetic Tfm-Gly equivalent, α-Trifluoromethylamino acidsAutores:Alberício F., Burger K., Hennig L., Jan Spengler, Koksch B., Tsouker P.Fuentes:googlescopus