Design and synthesis of novel type VI-like β-turn mimetics. Diversity at the i+1 and the i+2 position
摘要:
In this paper, a synthetic approach for functionalised 5-aminopiperidinone-2-carboxylate (APC) systems as non-pro cis-peptide bond containing external beta-turn mimics is presented. The scope and limitations of the synthetic method are discussed and the potential turn inducing properties of a model compound are evaluated by means of molecular modelling and NMR analysis. (C) 2004 Elsevier Ltd. All rights reserved.
Stereoselective transformation of pyrazinones into substituted analogues of cis-5-amino-6-oxo-2-piperidinemethanol and cis-5-amino-2-piperidinemethanol
摘要:
Various analogues of cis-5-amino-6-oxo-2-piperidinemethanol and c-is-5-amino-2-piperidinemethanol have been prepared via Diels-Alder reaction of substituted pyrazinones with ethene followed by acid methanolysis of the bridged lactam adducts. Further reduction of the resulting methyl 2-piperidinecarboxylate ester compounds led to the corresponding 2-piperidinemethanol products that were converted into potential SP antagonists. (C) 2003 Elsevier Science Ltd. All rights reserved.