1670-99-1Relevant academic research and scientific papers
Synthesis of alkaloid analogues from α-amino acids by one-pot radical decarboxylation/alkylation
Boto, Alicia,De Leon, Yolanda,Gallardo, Juan Antonio,Hernandez, Rosendo
, p. 3461 - 3468 (2005)
A mild, one-pot methodology to obtain α-substituted nitrogen heterocycles from commercial amino acids is reported. This versatile procedure has been applied to the synthesis of different alkaloid analogues in good to excellent yields. Wiley-VCH Verlag GmbH & Co. KGaA, 2005.
The synthesis of α,α-disubstituted α-amino acids via ichikawa rearrangement
Szczes?niak, Piotr,Pieczykolan, Micha?,Stecko, Sebastian
, p. 1057 - 1074 (2016/02/19)
An approach to α,α-disubstituted α-amino acids is reported. The key step is allyl cyanate-to-isocyanate rearrangement. As demonstrated, the resultant allyl isocyanates can be directly trapped with various nucleophiles, for instance, alcohols, amines, and organometallic reagents, to provide a broad range of N-functionalized allylamines. The developed method has been successfully applied in the synthesis of two bioactive peptides: 2-aminoadamantane-2-carboxylic acid derived P2X7-evoked glutamate release inhibitor and 4-amino-tetrahydropyranyl-4-carboxylic acid derived dipeptide GSK-2793660, which is currently in clinical trials as cathepsin C inhibitor for the treatment of cystic fibrosis, noncystic fibrosis bronchiectasis, ANCA-associated vasculitis and bronchiectasis.
Spiroimidazolidine derivatives, their preparation, their use and pharmaceutical preparations formed therefrom
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, (2008/06/13)
The present invention relates to spiroimidazolidine derivatives of the formula I in which E, V, W, X, R1and R2have the meanings indicated in the claims. The compounds of the formula I are valuable pharmaceutical active compounds which are suitable, for example, for the therapy and prophylaxis of inflammatory disorders, such as, for example, rheumatoid arthritis, or allergic disorders. The compounds of the formula I are also inhibitors of the adhesion and migration of leukocytes and/or antagonists of the adhesion receptor VLA-4 belonging to the integrins group. They are generally suitable for the therapy and prophylaxis of illnesses which are caused by an undesired extent of leukocyte adhesion and/or leukocyte migration or are associated therewith or in which cell-cell or cell-matrix interactions which are based on interactions of VLA-4 receptors with their ligands play a part. The invention also relates to processes for the preparation of the compounds of the formula I, pharmaceutical preparations which contain compounds of the formula I, and methods for treating these disorders.
