Fluorescent Charge-Neutral Analogue of Xanthosine: Synthesis of a 2‘-Deoxyribonucleoside Bearing a 5-Aza-7-deazaxanthine Base
作者:Photon Rao、Steven A. Benner
DOI:10.1021/jo005743h
日期:2001.7.1
A concise route is described to prepare the 5-aza-7-deazapurine 2 ' -deoxyriboside (4), which presents the puADA hydrogen-bonding pattern, analogous to the hydrogen-bonding pattern presented by 2 ' -deoxyxanthosine (2). The route begins with the commercially available 1-alpha -chloro-2-deoxy-3-5-bistoluoyloxyribofuranose (10), which proves to be a versatile point of entry to beta -2 ' -deoxyribofuranosides. In the first step, 2-nitroimidazole (8) is coupled with 10 to yield intermediate 11. Reduction of the nitro group to an amino group yields 12, which is treated with phenyl isocyanatoformate to complete the nucleobase to yield 13. Removal of the toluoyloxy protecting groups of 13 yields the target nucleoside 4 in 40% overall yield in four steps. In an alternative strategy, convergent coupling of 14 with 10 under basic conditions was attempted but found to yield the heterocycle glycosylated at the undesired position. Compound 13 displays potentially useful fluorescence properties. After excitation at 250 nm, a solution of 13 in MeCN shows a fluorescence emission with a maximum at 410 Dm. Furthermore, 13 is neutral at physiological pH, a property that it shares with natural nucleobases but not xanthosine itself, which is an acid with a pK(a) of ca. 5.6. Furthermore, as part of the design, 4 is made capable of presenting an unshared pair of electrons to the DNA minor groove.
WO2024091498A1
申请人:——
公开号:——
公开(公告)日:——
CK2 INHIBITORS, COMPOSITIONS AND METHODS THEREOF
申请人:Polaris Pharmaceuticals
公开号:US20170369489A1
公开(公告)日:2017-12-28
The present invention provides synthesis, pharmaceutically acceptable formulations and uses of compounds in accordance with Formula (I), or a stereoisomer, a tautomer or a pharmaceutically acceptable salt thereof.
For Formula (I) compounds R
1
, R
2
, R
3
, Ar and Z are as defined in the specification. The inventive Formula (I) compounds are inhibitors of CK2 and find utility in any number of therapeutic applications, including but not limited to treatment of proliferative disorders such as cancer, inflammation and immunological disorders.
[EN] AMIDES OF HETEROCYCLIC COMPOUNDS AS TRPA1 INHIBITORS<br/>[FR] AMIDES DE COMPOSÉS HÉTÉROCYCLIQUES À TITRE D'INHIBITEURS DE TRPA1
申请人:GLENMARK PHARMACEUTICALS SA
公开号:WO2011114184A1
公开(公告)日:2011-09-22
Amides of heterocyclic compounds as Transient Receptor Potential subfamily A (TRPA) modulators are provided In particular, compounds described herein are useful for treating or preventing diseases, conditions and/ or disorders modulated by TRPA1 (Transient Receptor Potential subfamily A, member 1) Also provided herein are processes for preparing compounds described herein, intermediates used in their synthesis, pharmaceutical compositions thereof, and methods for treating or preventing diseases, conditions and/or disorders modulated by TRPA1. (I).