N-Substituted Phenoxazine and Acridone Derivatives: Structure–Activity Relationships of Potent P2X4 Receptor Antagonists
作者:Victor Hernandez-Olmos、Aliaa Abdelrahman、Ali El-Tayeb、Diana Freudendahl、Stephanie Weinhausen、Christa E. Müller
DOI:10.1021/jm300845v
日期:2012.11.26
have potential as drugs for the treatment of neuropathic pain and neurodegenerative diseases. In the present study the discovery of phenoxazine derivatives as potent P2X4 antagonists is described. N-Substituted phenoxazine and related acridone and benzoxazine derivatives were synthesized and optimized with regard to their potency to inhibit ATP-induced calcium influx in 1321N1 astrocytoma cells stably
Low Pressure Carbonylation of Benzyl Carbonates and Carbamates for Applications in <sup>13</sup>C Isotope Labeling and Catalytic CO<sub>2</sub> Reduction
作者:Craig S. Day、Stephanie J. Ton、Clemens Kaussler、Daniel Vrønning Hoffmann、Troels Skrydstrup
DOI:10.1002/anie.202308238
日期:2023.8.28
Herein, an oxygen atom deletion strategy via sequential Pd-catalyzed decarboxylative carbonylation of carbonates and carbamates to afford esters and amides is reported. Operating under lowpressures (near stoichiometric or substoichiometric), either 13C labeled products are accessed or a proof-of-concept that CO2 formed upon decarboxylation can be reduced in situ and reincorporated as CO is shown.
在此,报道了通过碳酸酯和氨基甲酸酯的连续 Pd 催化脱羧羰基化以提供酯和酰胺的氧原子删除策略。在低压(接近化学计量或亚化学计量)下操作,可以获取13 C 标记的产品,也可以证明脱羧时形成的 CO 2可以原位还原并重新结合为 CO。