Synthesis of α,α-disubstituted 4-phosphonophenylalanine analogues as conformationally-constrained phosphotyrosyl mimetics
摘要:
Syntheses of N-Boc (S)-4-(diethylphosphono)-(alpha-methyl)phenylalanine [Boc-(alpha-Me)Phe(4-PO3Et2)-OH] (9) and N-Boc (S)-2amino-6-(diethylphosphono)tetralin-2-carboxylic acid [Boc-Atc(6-PO3Et2)-OH] (18) are reported as conformationally-constrained phosphotyrosyl mimetics suitably protected for peptide synthesis. Both syntheses proceeded through chiral arylhalides that are converted to arylphosphonates by palladium-catalyzed cross coupling with diethylphosphite. These amino acid analogues may be useful in the study of cellular signal transduction processes. (C) 2004 Elsevier Ltd. All rights reserved.
Synthesis of α,α-disubstituted 4-phosphonophenylalanine analogues as conformationally-constrained phosphotyrosyl mimetics
摘要:
Syntheses of N-Boc (S)-4-(diethylphosphono)-(alpha-methyl)phenylalanine [Boc-(alpha-Me)Phe(4-PO3Et2)-OH] (9) and N-Boc (S)-2amino-6-(diethylphosphono)tetralin-2-carboxylic acid [Boc-Atc(6-PO3Et2)-OH] (18) are reported as conformationally-constrained phosphotyrosyl mimetics suitably protected for peptide synthesis. Both syntheses proceeded through chiral arylhalides that are converted to arylphosphonates by palladium-catalyzed cross coupling with diethylphosphite. These amino acid analogues may be useful in the study of cellular signal transduction processes. (C) 2004 Elsevier Ltd. All rights reserved.