Synthesis of α, β-unsaturated γ-amino esters with unprecedented high (E)-stereoselectivity and their conformational analysis in peptides
作者:Sachitanand M. Mali、Anupam Bandyopadhyay、Sandip V. Jadhav、Mothukuri Ganesh Kumar、Hosahudya N. Gopi
DOI:10.1039/c1ob05732d
日期:——
Mild, efficient and racemization-free synthesis of N-protected α, β-unsaturated γ-amino esters with unprecedented high E- stereoselectivity is described. This method is found to be compatible with Boc-, Fmoc- and other side chain protecting groups. The crystal conformations of the vinylogous γ-amino esters in monomers and in homo- and mixed dipeptides are studied. Further, the vinylogous homo-dipeptide showed a β-sheet conformation, while mixed α- and α,β-unsaturated γ-hybrid dipeptide adapted an irregular structure in single crystals.
[EN] PREPARATION OF SUBSTITUTED 1,2-DIAMINOHETEROCYCLIC COMPOUND DERIVATIVES AND THEIR USE AS PHARMACEUTICAL AGENTS<br/>[FR] PRÉPARATION DE DÉRIVÉS DE COMPOSÉS 1,2-DIAMINOHÉTÉROCYCLIQUES SUBSTITUÉS ET LEUR UTILISATION EN TANT QU'AGENTS PHARMACEUTIQUES
申请人:AVELOS THERAPEUTICS INC
公开号:WO2022260441A1
公开(公告)日:2022-12-15
This invention relates to compounds which are microtubule associated serine/threonine-like kinase (MASTL) inhibitors and the use of the compounds in the treatment of diseases and medical conditions mediated by MASTL, for example in the treatment of cancer and other target related diseases.
作者:Eunhwa Ko、Jing Liu、Lisa M. Perez、Genliang Lu、Amber Schaefer、Kevin Burgess
DOI:10.1021/ja1071916
日期:2011.1.26
This paper concerns peptidomimetic scaffolds that can present side chains in conformations resembling those of amino acids in secondary structures without incurring excessive entropic or enthalpic penalties. Compounds of this type are referred to here as minimalist mimics. The core hypothesis of this paper is that small sets of such scaffolds can be designed to analogue local pairs of amino acids (including noncontiguous ones) in any secondary structure; i.e., they are universal peptidomimetics. To illustrate this concept, we designed a set of four peptidomimetic scaffolds. Libraries based on them were made bearing side chains corresponding to many of the protein-derived amino acids. Modeling experiments were performed to give an indication of kinetic and thermodynamic accessibilities of conformations that can mimic secondary structures. Together, peptidomimetics based on these four scaffolds can adopt conformations that resemble almost any combination of local amino acid side chains in any secondary structure. Universal peptidomimetics of this kind are likely to be most useful in the design of libraries for high-throughput screening against diverse targets. Consequently, data arising from submission of these molecules to the NIH Molecular Libraries Small Molecule Repository (MLSMR) are outlined.