Syntheses of New Spirocarbocyclic Nucleoside Analogs Using Iminonitroso Diels−Alder Reactions
作者:Weimin Lin、Anuradha Gupta、Kyung Hee Kim、David Mendel、Marvin J. Miller
DOI:10.1021/ol802553g
日期:2009.1.15
dienes coupled efficiently in a series of iminonitroso Diels−Alder reactions to produce a series of new spirocyclic adducts. Hydrogenolysis of these adducts afforded new spirocycles that contain multiple handles for further functionalization. Furthermore, stereocontrolled dihydroxylation and reductive cleavage of the spirocyclic adducts generated versatile scaffolds for the syntheses and derivatization
N -Cbz-和Boc-保护的螺环二烯通过环戊二烯的二烷基化制备。这些二烯在一系列亚氨基亚硝基 Diels-Alder 反应中有效偶联,以产生一系列新的螺环加合物。这些加合物的氢解提供了新的螺环,其中包含用于进一步功能化的多个手柄。此外,螺环加合物的立体控制二羟基化和还原裂解为新型螺环碳环核苷类似物的合成和衍生化提供了多功能支架。
Syntheses and biological evaluation of ring-C modified colchicine analogs
作者:Baiyuan Yang、Zhiqing C. Zhu、Holly V. Goodson、Marvin J. Miller
DOI:10.1016/j.bmcl.2010.03.056
日期:2010.6
Ring-C modified alkaloids were synthesized from colchicine using iminonitroso Diels–Alder reactions in a highly regio- and stereoselective fashion. Several analogs exhibited cytotoxic activity similar to that of colchicine itself against PC-3 and MCF-7 cancer cell lines, by serving as prodrugs of colchicine through retro Diels–Alder reactions under the assayed conditions. In vitro microtubule polymerization
使用亚氨基亚硝基 Diels-Alder 反应以高度区域和立体选择性的方式从秋水仙碱合成环 C 修饰的生物碱。几种类似物表现出类似于秋水仙碱本身对 PC-3 和 MCF-7 癌细胞系的细胞毒活性,通过在测定条件下通过逆狄尔斯-阿尔德反应作为秋水仙碱的前药。体外微管聚合试验表明这些修饰影响了它们与微管蛋白的相互作用。
Decarboxylative/Oxidative Amidation of Aryl α-Ketocarboxylic Acids with Nitroarenes and Nitroso Compounds in Aqueous Medium
作者:Dinesh S. Barak、Dipak J. Dahatonde、Shashikant U. Dighe、Ruchir Kant、Sanjay Batra
DOI:10.1021/acs.orglett.0c03666
日期:2020.12.4
of aryl α-ketocarboxylic acids with 5-aryl-3-nitroisoxazole-4-carboxylates and substituted dinitrobenzenes under oxidative aqueous conditions to afford N-aryl amides is described. The reaction is suggested to proceed via a radical pathway in which a benzoyl nitroxyl radical, the key intermediate formed from reaction between nitroarene and benzoyl radical from glyoxalic acid, couples with hydroxyl radical
receptor 5 (mGlu5) with partial allosteric antagonists has received increased interest due to their favourable in vivo activity profiles compared to the unfavourable side-effects of full inverse agonists. Here we report on a series of bispyridine benzene derivatives with a functional molecular switch affecting antagonistic efficacy, shifting from inverse agonism to partial antagonism with only a single
申请人:Consejo Superior De Investigaciones Científicas
公开号:EP2853565A1
公开(公告)日:2015-04-01
The present invention relates to the discovery of particular aromatic compounds of formula (1), possessing activity as modulators of metabotropic glutamate receptors (mGIuR) whose modulatory activity on the receptor may be controlled by irradiation with suitable light resulting in the optical control of receptor biological function, to the use of said compounds as a medicament, and to pharmaceutical compositions comprising said compounds of formula (1).