Synthesis, physicochemical and anticonvulsant properties of new N-pyridyl derivatives of 3-phenyl- and 3,3-diphenyl-succinimides
摘要:
Synthesis and physicochemical properties of new N-pyridyl derivatives of 3-phenyl and 3,3-diphenylsuccinimides (1-12) have been described. The obtained compounds were evaluated in respect of their anticonvulsant activity. The N-pyridyl derivatives of 3-phenylsuccinimides (7-12) abolished the protection against MES- and scMET-induced seizures, whereas N-pyridyl derivatives of 3,3-diphenylsuccinimides (1-6) were inactive. After molecular modelling and quantum-chemistry calculations the theoretical activity test was applied (W. Kwiatkowski, J. Karolak-Wojciechowska, SAR and QSAR Envir. Res. 1 (1993) 233; Chem. Abstr. 120, 153001 (1994). J. Karolak-Wojciechowska, M. Blaszczyk, W. Kwiatkowski, J. Obniska, A. Zejc, J. Chem. Cryst. 27 (1997) 297; Chem. Abstr. 127, 277834k (1997)). The molecular electrostatic potential (MEP) of the active compounds differed significantly from that of the inactive ones. (C) 1999 Elsevier Science S.A. All rights reserved.
The conversion of the diterpenoid resin acid, podocarpic acid, into a tetracyclic system possessing a 5-membered ring D is described. The unsubstituted ring with a CO group at C-151 was prepared from the 13-(2′-carboxyethyl) derivative III (R CH2CH2CO2H) in fair yield, but attempted cyclization of compounds possessing a 1′-substituted-2′-carboxyethyl side chain at C-13 was unsuccessful. The C-17
描述了将二萜树脂酸,罗汉果酸转化为具有5元环D的四环体系。由13-(2'-羧乙基)衍生物III(RCH 2 CH 2 CO 2 H)以合理的产率制备了在C-15 1处带有CO基团的未取代环,但尝试将具有1'的化合物环化C-13的-取代的2'-羧乙基侧链不成功。从13-丙烯酰基化合物以低收率获得C-17酮,但从13-巴豆酰基化合物根本得不到。描述了一些涉及苯甲醚衍生物的模型实验。
Visible-light-driven alkene dicarboxylation with formate and CO<sub>2</sub> under mild conditions
作者:Fulin Zhang、Xiao-Yang Wu、Pan-Pan Gao、Hao Zhang、Zhu Li、Shangde Ai、Gang Li
DOI:10.1039/d3sc04431a
日期:2024.4.24
dicarboxylation of diverse alkenes, including simple styrenes. The highly competing hydrocarboxylation side reaction was successfully overridden. Good yields of products were obtained undermild reaction conditions at ambient temperature and pressure of CO2. The dual role of formate salt may stimulate the discovery of a range of new transformations undermild and friendly conditions.
ring-opening carboxylation of styrene carbonates with CO2 to achieve dicarboxylic acids and/or β-hydroxy acids has been developed via the selective cleavage of the C(sp3)–O bond in cyclic carbonates. The product selectivity is probably determined by the stability and reactivity of the key benzylic radical and carbanionintermediate.
通过选择性裂解环状碳酸酯中的 C(sp 3 )–O 键,开发了苯乙烯碳酸酯与 CO 2的电还原开环羧化以获得二羧酸和/或β-羟基酸。产物选择性可能由关键的苄基和碳负离子中间体的稳定性和反应性决定。
Dave; Nargund, Journal of the University of Bombay, Science: Physical Sciences, Mathematics, Biological Sciences and Medicine, 1938, vol. 7/, p. 196,199
作者:Dave、Nargund
DOI:——
日期:——
Dave; Nargund, Journal of the University of Bombay, Science: Physical Sciences, Mathematics, Biological Sciences and Medicine, 1938, vol. 7/3, p. 191,194