Untersuchungen zur proteasekatalysierten und chemischen Peptidbindungskn�pfung mit ?-trifluormethylsubstituierten ?-Aminos�uren
摘要:
Subtilisin, alpha-chymotrypsin and papain catalyzed hydrolyses of alpha-trifluoromethyl substituted N-benzyloxycarbonyl amino acid methylesters (Z-TFM-Xaa-OMe) 1 can be achieved only in the case of 3,3,3-trifluoroalanine. Enzymatic incorporation of Z-TFM amino acids 2 into N-terminal position of dipeptides also fails. In contrary, dipeptides with a TFM amino acid moiety in N-terminal position, e. g. TFM-Phg-L-Phe-OMe 5, react with H-Leu-NH2 to give the corresponding tripeptides 6 in high yield. Z protected dipeptide derivatives 8 with N-terminal TFM amino acids can be obtained via 4-trifluoromethyl-5-(4H)-oxazolones 7.
Untersuchungen zur proteasekatalysierten und chemischen Peptidbindungskn�pfung mit ?-trifluormethylsubstituierten ?-Aminos�uren
摘要:
Subtilisin, alpha-chymotrypsin and papain catalyzed hydrolyses of alpha-trifluoromethyl substituted N-benzyloxycarbonyl amino acid methylesters (Z-TFM-Xaa-OMe) 1 can be achieved only in the case of 3,3,3-trifluoroalanine. Enzymatic incorporation of Z-TFM amino acids 2 into N-terminal position of dipeptides also fails. In contrary, dipeptides with a TFM amino acid moiety in N-terminal position, e. g. TFM-Phg-L-Phe-OMe 5, react with H-Leu-NH2 to give the corresponding tripeptides 6 in high yield. Z protected dipeptide derivatives 8 with N-terminal TFM amino acids can be obtained via 4-trifluoromethyl-5-(4H)-oxazolones 7.
Protease-Catalyzed Peptide Synthesis for the Site-Specific Incorporation of α-Fluoroalkyl Amino Acids into Peptides
作者:Sven Thust、Beate Koksch
DOI:10.1021/jo020613p
日期:2003.3.1
Substitution of native amino acids by fluoroalkyl analogues represents a new approach for the design of biologically active peptides with increased metabolic stability as well as defined secondary structure and provides a powerful label for spectroscopic investigations. Here, we introduce a methodology for the incorporation of sterically demanding C(alpha)-fluoroalkyl amino acids into the P(1) position
Peptide modification by introduction of α-trifluoromethyl α-amino acids via 4-trifluoromethyl-1,3-oxazolidin-2,5-diones
作者:Christian Schierlinger、Klaus Burger
DOI:10.1016/0040-4039(92)88047-9
日期:1992.1
α-Trifluoromethyl substituted α-aminoacids can be introduced into the N-terminal position of peptides on carboxyl group activation via Leuchs anhydrides.
可以通过Leuchs酸酐将α-三氟甲基取代的α-氨基酸引入在羧基活化的肽的N-末端位置。
Untersuchungen zur proteasekatalysierten und chemischen Peptidbindungskn�pfung mit ?-trifluormethylsubstituierten ?-Aminos�uren
Subtilisin, alpha-chymotrypsin and papain catalyzed hydrolyses of alpha-trifluoromethyl substituted N-benzyloxycarbonyl amino acid methylesters (Z-TFM-Xaa-OMe) 1 can be achieved only in the case of 3,3,3-trifluoroalanine. Enzymatic incorporation of Z-TFM amino acids 2 into N-terminal position of dipeptides also fails. In contrary, dipeptides with a TFM amino acid moiety in N-terminal position, e. g. TFM-Phg-L-Phe-OMe 5, react with H-Leu-NH2 to give the corresponding tripeptides 6 in high yield. Z protected dipeptide derivatives 8 with N-terminal TFM amino acids can be obtained via 4-trifluoromethyl-5-(4H)-oxazolones 7.