119860-59-2Relevant articles and documents
Resolution of non-protein amino acids via Carica papaya lipase-catalyzed enantioselective transesterification
Miyazawa, Toshifumi,Onishi, Kazuki,Murashima, Takashi,Yamada, Takashi,Tsai, Shau-Wei
, p. 2569 - 2573 (2007/10/03)
Carica papaya lipase-catalyzed transesterification of the 2,2,2-trifluoroethyl esters of N-benzyloxycarbonylated dl-amino acids carrying aliphatic side chains proceeded smoothly and, in almost all the cases, enantiospecifically (E = >200), affording the l-methyl esters and leaving the d-trifluoroethyl esters intact.
New synthetic routes to α-amino acids and γ-oxygenated α-amino acids. Reductive denitration and oxidative transformations of γ-nitro-α-amino acids
Crossley, Maxwell J.,Fung, Yik M.,Kyriakopoulos, Efstathia,Potter, Jeffrey J.
, p. 1123 - 1130 (2007/10/03)
Transformation of γ-nitro-α-amino acid derivatives into α-amino acids by reductive denitration, into the γ-oxo-α-amino acids by ozonolysis of the corresponding amino acid ester nitronate derivatives, and into γ-hydroxy-α-amino acid derivatives by subsequent reduction of the oxo functionality, can be achieved in good yields. As the γ-nitro-α-amino acid derivatives are prepared from N,O-protected dehydroalanines derivable from the corresponding alanine, serine and cysteine derivatives by specific routes, the overall procedures provide a means for selective conversion of these simple α-amino acids into more complex ones.
ANALOG OF PEPTIDASE SUBSTRATES
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, (2008/06/13)
This invention relates to novel analogs of certain peptidase substrates in which the nitrogen atom of the scissile amide bond has been replaced with a difluoromethylene moiety and in which the carbonyl moiety of its adjacent amide bond has been replaced w
Novel peptidase inhibitors
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, (2008/06/13)
This invention relates to analogs of peptidase substrates in which the nitrogen atom of the scissile amide bond of a partial retropeptide analog of the substrate has been replaced by a difluoromethylene moiety. These peptidase substrate analogs provide specific enzyme inhibitors for a variety of proteases, the inhibition of which exert valuable pharmacological activities and therefore have useful physiological consequences in a variety of disease states.
Novel peptidase inhibitors
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, (2008/06/13)
This invention relates to activated electrophilic ketone retroamide analogs of certain peptidase substrates having the formula R1NHCHR2COCF2CHR3(NRbCOXRa)nQ These compounds are useful in inhibiting serine-, thiol-, carboxylic acid- and metallo- dependent