Beyond azide–alkyne click reaction: easy access to 18F-labelled compounds via nitrile oxide cycloadditions
作者:Boris D. Zlatopolskiy、René Kandler、Diana Kobus、Felix M. Mottaghy、Bernd Neumaier
DOI:10.1039/c2cc31335a
日期:——
Radiofluorinated 4-fluorobenzonitrile oxide and N-hydroxy-4-fluorobenzimidoyl chloride rapidly react with different alkenes and alkynes under mild conditions. These cycloadditions are suitable for the preparation of low-molecular weight radiopharmaceuticals and, in a strain-promoted variant, can enable easy labelling of sensitive biopolymers.
Molecular Imaging of Inflammation in Osteoarthritis Using a Water-Soluble Fluorocoxib
作者:Md. Jashim Uddin、Anoop Vemulapalli、Hiroaki Niitsu、Brenda C. Crews、Connor G. Oltman、Philip J. Kingsley、Taylor E. Kavanaugh、Sean K. Bedingfield、J. Oliver Mcintyre、Matthew Milad、Ansari M. Aleem、Robert J. Coffey、Craig L. Duvall、Lawrence J. Marnett
DOI:10.1021/acsmedchemlett.9b00512
日期:2020.10.8
of inflammatory diseases. To this end, we report the discovery of N-[(rhodamin-X-yl)but-4-yl]-2-[1-(4-chlorobenzoyl)-5-methoxy-2-methyl-1H-indol-3-yl]acetamide chloride salt (fluorocoxib D), a hydrophilic analog of fluorocoxib A. Fluorocoxib D inhibits COX-2 selectively in purified enzyme preparations and cells. It exhibits adequate photophysical properties to enable detection of COX-2 in intact cells
检测炎症生物标志物(如环氧合酶 2 (COX-2))的临床成像方法可能有助于炎症疾病的诊断和治疗。为此,我们报告了N -[(rhodamin-X-yl)but-4-yl]-2-[1-(4-chlorobenzoyl)-5-methoxy-2-methyl-1 H-indol-3-yl]acetamide chloride salt (fluorocoxib D),一种 fluorocoxib A 的亲水类似物。Fluorocoxib D 在纯化的酶制剂和细胞中选择性地抑制 COX-2。它表现出足够的光物理特性,可以在角叉菜胶诱导的急性足垫炎症小鼠模型和骨关节炎小鼠模型中检测完整细胞中的 COX-2。通过用塞来昔布阻断酶的活性位点或用非靶向 5-羧基-X-罗丹明染料进行分子成像来验证 COX-2 的选择性。这些数据表明,氟考昔 D 是早期检测表达升高水平 COX-2 的炎症或肿瘤病变的理想候选者。
METHODS AND COMPOSITIONS FOR DIAGNOSTIC AND THERAPEUTIC TARGETING OF COX-2
申请人:Marnett Lawrence J.
公开号:US20130052138A1
公开(公告)日:2013-02-28
The presently disclosed subject matter provides compositions that selectively bind cyclooxygenase-2 and comprise a therapeutic and/or diagnostic moiety. Also provided are methods for using the disclosed compositions for diagnosing (i.e., by imaging) a target cell and/or treating a disorder associated with a cyclooxygenase-2 biological activity.
Podophyllotoxin analogues active versus Trypanosoma brucei
作者:Md. Jashim Uddin、David C. Smithson、Kristin M. Brown、Brenda C. Crews、Michele Connelly、Fangyi Zhu、Lawrence J. Marnett、R. Kiplin Guy
DOI:10.1016/j.bmcl.2010.01.009
日期:2010.3
In an effort to discover novel anti-trypanosomal compounds, a series of podophyllotoxin analogues coupled to non-steroidal anti-inflammatory drugs (NSAIDs) has been synthesized and evaluated for activity versus Trypanosoma brucei and a panel of human cell lines, revealing compounds with low nano-molar potencies. It was discovered that coupling of NSAIDs to podophyllotoxin increased the potencies of both compounds over 1300-fold. The compounds were shown to be cytostatic in nature and seem to act via de-polymerization of tubulin in a manner consistent with the known activities of podophyllotoxin. The potencies against T. brucei correlated directly with Log P values of the compounds, suggesting that the conjugates are acting as hydrophobic tags allowing podophyllotoxin to enter the cell. (C) 2010 Elsevier Ltd. All rights reserved.