摘要:
The invention relates to novel methods for synthesizing a synthon for γ,δ- dihydroxyisoleucine 1 (CAS No. 55399-94-5] as building block for the synthesis of amatoxins, and for novel methods for synthesizing amatoxins using such building block.
摘要:
The invention relates to a method of modifying a specific lysine residue in a polypeptide comprising at least two lysine residues, said method comprising (a) providing a polypeptide comprising a target lysine residue protected by a first protecting group, and at least one further lysine residue; (b) treating the polypeptide to protect said further lysine residue(s), wherein the protecting group for said further lysine residues is different to the protecting group for the target lysine residue; (c) selectively deprotecting the target lysine residue; and (d) modifying the deprotected lysine residue of (c).
摘要:
The present invention provides methods of assembling oligopeptides or polypeptides in a native chemical ligation reaction that eliminates the formation of unwanted side products resulting from the presence of an unprotecte acidic C-terminal oligopeptide thioester. An important aspect of the present invention is providing side chain protected acidic C-terminal oligopeptide thioesters. The present invention is useful in methods for chemical synthesis of oligopeptides, polypeptides and proteins and improves the efficiency of native chemical ligation reactions, particularly where aspartyl or glutamyl peptide fragments are used to assemble an oligopeptide, polypeptide or protein product.
摘要:
The present invention provides methods of assembling oligopeptides or polypeptides in a native chemical ligation reaction that eliminates the formation of unwanted side products resulting from the presence of an unprotecte acidic C-terminal oligopeptide thioester. An important aspect of the present invention is providing side chain protected acidic C-terminal oligopeptide thioesters. The present invention is useful in methods for chemical synthesis of oligopeptides, polypeptides and proteins and improves the efficiency of native chemical ligation reactions, particularly where aspartyl or glutamyl peptide fragments are used to assemble an oligopeptide, polypeptide or protein product.
摘要:
The present invention is directed to the use of a cyclopropylmethyl derivative as a protecting group for compounds containing an amino group, carboxy group, amido group, mercapto group or hydroxy group and to the compounds formed having the cyclopropylmethyl moiety as the protecting group.
摘要:
Procedimiento para la obtención de timosinas y/o sus sales farmacéuticamente aceptables mediante la síntesis en fase sólida sobre soportes poliméricos que comprende las etapas de sintetizar linealmente los péptidos derivados de timus en fase sólida, incorporar al menos un Thr o Ser en forma de dipéptido de pseudoprolina en la secuencia, obtener las timosinas mediante el tratamiento de peptidil-resina con ácido trifluoroacético, y purificar las timosinas por RP-HPLC. La presente invención protege también el compuesto aislado y/o purificado obtenido por dicho procedimiento así como el uso del mismo en la preparación de un medicamento.
摘要:
The present invention relates to the synthesis of peptide-oligonucleotide conjugates (POC). More specifically, the invention relates to a novel method for the preparation of peptide-oligonucleotide conjugates, which can be conducted under mild conditions on solid support, can be performed manually or by a synthesizer, can be used to synthesize alternating sequences of peptides and oligonucleotides, and is applicable to the synthesis of a wide variety of peptide-oligonucleotide conjugates constructed from alternate peptide and oligonucleotide blocks.
摘要:
The solid-phase supported synthesis of peptides using p-nitrobenzyl esters, thioethers, ethers and carbamates for side-chain protection is described. Protected amino acids are utilized in the synthesis of peptides using standard solid-phase synthesis methodologies and deprotected.
摘要:
Novel compounds are provided which are useful as linking groups in chemical synthesis, preferably in the solid phase synthesis of oligonucleotides and polypeptides. The compounds are generally photolabile and comprise protecting groups which can be removed by photolysis to unmask a reactive group. The protecting groups has the general formula (Y), wherein: (Y) is a chemical structure as shown the Figure. Also provided is a method of forming, from component molecules, a plurality of compounds on a support, each compound occupying a separate predefined region of the support, using the protected compounds described above.
摘要:
Novel compounds are provided which are useful as linking groups in chemical synthesis, preferably in the solid phase synthesis of oligonucleotides and polypeptides. The compounds are generally photolabile and comprise protecting groups which can be removed by photolysis to unmask a reactive group. The protecting groups has the general formula (Y), wherein: (Y) is a chemical structure as shown the Figure. Also provided is a method of forming, from component molecules, a plurality of compounds on a support, each compound occupying a separate predefined region of the support, using the protected compounds described above.