Multivalent presentation of carbohydrates by 3<sub>14</sub>-helical peptide templates: synthesis, conformational analysis using CD spectroscopy and saccharide recognition
作者:Nitin J. Pawar、Ulf Diederichsen、Dilip. D. Dhavale
DOI:10.1039/c5ob01673h
日期:——
A tetrameric glycoconjugate template, SSFT 1, was coupled with a variety of six aminooxy sugars to achieve multivalent glycoconjugates 2–7.
一个四聚糖结合物模板,SSFT 1,与多种六个氨氧基糖偶联,以实现多价糖结合物2-7。
Beta-amino acid nitrile derivatives as cathepsin K inhibitors
申请人:——
公开号:US20020016361A1
公开(公告)日:2002-02-07
The present invention relates to beta-amino acid nitrile derivatives and pharmaceutically acceptable salts and/or pharmaceutically acceptable esters thereof. The compounds are cysteine protease inhibitors useful for the treatment of diseases associated with cysteine proteases, such as osteoporosis, osteoarthritis, rheumatoid arthritis, tumor metastasis, glomerulonephritis, atherosclerosis, myocardial infarction, angina pectoris, instable angina pectoris, stroke, plaque rupture, transient ischemic attacks, amaurosis fugax, peripheral arterial occlusive disease, restenosis after angioplasty and stent placement, abdominal aortic aneurysm formation, inflammation, autoimmune disease, malaria, ocular fundus tissue cytopathy and respiratory disease.
To gain mechanisticinsights, natural systems with biochemical relevance are inspiring for the creation of new biomimetics with unique properties and functions. Despite progress in rational design and protein engineering, folding and intramolecular organization of individual components into supramolecularstructures remains challenging and requires controlled methods. Foldamers, such as β‐peptides
Configuration-Dependent Medium-Sized Ring Formation: Chiral Molecular Framework with Three-Dimensional Architecture
作者:Naděžda Cankařová、Agustina La Venia、Soňa Krajčovičová、Viktor Krchňák
DOI:10.1021/acs.joc.8b02465
日期:2019.1.18
formation via a tandem cyclic N-acyliminium nucleophilic addition reaction. Cyclization of the acyclic precursor prepared on a solid phase using l-Ser and a racemic mixture of Fmoc-trans-2-aminocyclohexanecarboxylic acid predominantly yielded the cyclic diastereomer with the (1R,2R)-2-aminocyclohexane moiety rather than the tricyclic diastereomer from the (1S,2S)-enantiomer. In contrast, the model compound
A new peptideligation strategy based on a side-chain auxiliary was developed; the auxiliary is fairly simple and can be removed, without product isolation, under basic conditions.