1213132-66-1Relevant articles and documents
Biocatalytic retrosynthesis approaches to d-(2,4,5-trifluorophenyl)alanine, key precursor of the antidiabetic sitagliptin
Parmeggiani, Fabio,Rué Casamajo, Arnau,Colombo, Danilo,Ghezzi, Maria Chiara,Galman, James L.,Chica, Roberto A.,Brenna, Elisabetta,Turner, Nicholas J.
, p. 4368 - 4379 (2019/08/21)
The integration of biocatalytic steps in retrosynthetic analysis of a target molecule offers multiple advantages, such as reduction of the environmental footprint of the process, viability of milder and safer reaction conditions, and accessibility of transformations that are challenging with traditional chemical synthesis. Herein, six chemo-enzymatic routes are described for the synthesis of a fluorinated d-phenylalanine derivative, precursor of the blockbuster antidiabetic drug sitagliptin. All routes start from the same aldehyde precursor and involve at least one biocatalytic step, including reductive amination, transamination, deracemisation, hydroamination, and alkene reduction. The target molecule was obtained in 2-5 steps from the aldehyde, with ee up to >99% and in 36-62% isolated yield. Furthermore, as part of one of the routes, the first example of a fully biocatalytic conversion of a cinnamic acid derivative to the corresponding d-phenylalanine (formal d-selective hydroamination) is reported.
3-AMINO-4-PHENYLBUTANOIC ACID DERIVATIVES AS DIPEPTIDYL PEPTIDASE INHIBITORS FOR THE TREATMENT OR PREVENTION OF DIABETES
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Page/Page column 53-54, (2010/02/07)
The present invention is directed to 3-amino-4-phenylbutanoic acid derivatives which are inhibitors of the dipeptidyl peptidase-IV enzyme ("DP-IV inhibitors") and which are useful in the treatment or prevention of diseases in which the dipeptidyl peptidase-IV enzyme is involved, such as diabetes and particularly type 2 diabetes. The invention is also directed to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which the dipeptidyl peptidase-IV enzyme is involved.