200937-21-9Relevant articles and documents
Tumor metastasis inhibiting compounds and methods
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, (2008/06/13)
A peptide derivative containing 1 to 20 units of peptide unit represented by the following general formula [I] or a pharmaceutically acceptable salt thereof; wherein Arg represents L- or D-arginine residue, Asp represents L-aspartic acid residue, X represents L- or D-leucine, D-isoleucine, L- or D-norleucine, L- or D-phenylalanine, D-phenylglycine or D-alanine residue, and [Z] and [Y] each represents an amino acid or a peptide residue, which may be present or absent, selected from glycine, L-serine, L-threonine, L- and D-aspartic acid, L-alanine, L- and D-glutamic acid, L-proline residues and a peptide residue constituted by the foregoing amino acid residues, and a pharmaceutical composition comprising the peptide derivative. The composition of the present invention is useful as an agent for inhibiting tumor metastasis.
Use of 2-pyrimidine thiol carbonates as acylating agents for amino or imino containing compounds
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, (2008/06/13)
Thiolcarbonates represented by the formula, SPC1 Wherein R1 and R2 are individually a hydrogen atom or a methyl group, and R3 is a straight chain or branched chain saturated or unsaturated alkyl group having 1 to 5 carbon atoms or is a benzyl or benzhydryl group which may be nuclear substituted, are quite useful for protecting the amino or imino groups of amines, hydrazines, amino acids and peptides with groups of the formula EQU1 The thiolcarbonates can be easily produced by reacting an alkali metal salt of 2-mercaptopyrimidine with phosgene, and reacting the resulting thiolchloroformate with an alcohol (R3 OH), or by reacting a 2-mercaptopyrimidine with a halocarbonic acid ester.