1,721,028 research outputs found
UNUSUAL SULFUR AND SELENIUM AMINO ACIDS
Full text linkPresentation of synthetic methods for novel, unnatural sulfur and selenium containing amino acid
Large Scale Homologation of alpha-Amino Acids
No full textPresentation of a synthetic procedure for large scale homologation of alpha-amino acid
Enantiopure b3-amino acids-2,2-d2 via homologation of proteinogenic a-amino acids
No full textA procedure for the synthesis of enantiopure β3-amino acids from proteinogenic α-amino acids, developed by our group a few years ago, has been modified to enable the production of C-2 fully deuterated, C-protected β3-amino acids and, even more important, the synthesis of valuable deuterium labelled N(Boc)-protected chiral synthons, such as 2-aminoalcohols, 2-aminoiodides, and β3-amino nitriles
Real Time RT-PCR and flow cytometry to investigate wheat kernel hardness: role of puroindoline genes and proteins
No full textDeveloping seeds from Triticum aestivum (wheat) cultivars were collected after flowering and analysed for puroindoline a and b gene expression by Real Time RT-PCR. Mature seeds were investigated for the presence and the amount of starch-associated puroindoline a and b proteins by flow cytometry. Puroindoline a gene and protein were found to have a predominant role in controlling wheat kernel hardness
SURROGATI DEL LEGAME AMMIDICO: NUOVE METODOLOGIE DI SINTESI IN FASE SOLIDA DI TIOMETILENPSEUDOPEPTIDI
No full textE' STATA PRESENTATA UNA NUOVA METODOLOGIA SINTETICA PER OTTENERE TIOMETILENPSEUDOPEPTIDI UTILIZZANDO GLI ENANTIOPURI N-FMOC BETA-IODOAMMINE E L'ACIDO TIOGLICOLICO, ANCH'ESSO PROTETTO ALL'ATOMO DI ZOLFO CON IL GRUPPO FMOC
Emerging Chemistry from alpha-Amino Acid Homologation Intermediates
No full textPRESENTATION OF NEW RESULTS CONCERNIG THE SYNTHESIS OF ENANTIOPURE ORTHOGONALLY PROTECTED EITHER S-(AMINOALKYL) OR Se-(AMINOALKYL) ALPHA-AMINO ACIDS FROM BETA-IODOAMINES AND CYSTEINE OR SELENOCYSTINE RESPECTIVELY IN CONCERT WITH THE PROGRESS IN THE SYNTHESIS OF ENANTIOPURE BETA2,3-AMINO ACIDS FROM n-PROTECTED BETA3-AMINO NITRILES
Novel thiol- and thioether-containing amino acids: cystathionine and homocysteine families
No full textNatural L-homocysteine and L,L-cystathionine, along with a series of unnatural analogues, have been prepared from L-aspartic and L-glutamic acid. Manipulation of the protected derivatives provided x-iodoamino acids, which were used in thioalkylation reactions of sulfur nucleophiles, such as the ester of L-cysteine and potassium thioacetate
POLYMER-SUPPORTED PHOSPHINE-HALOGEN COMPLEXES .5. POLYMER-BOUND TRIARYLPHOSPHINE IODINE COMPLEXES, CONVENIENT COUPLING REAGENT SYSTEMS IN PEPTIDE-SYNTHESIS
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