Al-Catalyzed Facile Construction of Quaternary CC Bonds by the Allylic Substitution of Tertiary Alcohols: A Concise and Formal Synthesis of (±)-Mersicarpine
作者:Xue Zhong、You Li、Fu-She Han
DOI:10.1002/chem.201201344
日期:2012.8.6
In close quarters: A concise, high‐yielding, and more sustainable route for the synthesis of (±)‐mersicarpine in nine linear steps from commercially available indole and succinic anhydride is presented (see scheme). It is also demonstrated that the novel protocol can be commonly used for the rapid and flexible construction of a diverse class of mersicarpine analogues.
Synthesis and antitumor activities of 4-(1H-indol-1-yl)-4-oxobutanoic acid spliced podophyllotoxin derivatives
作者:Jun Yang、Guang-Ping Liang、Xiong-Li Liu
DOI:10.1080/00397911.2023.2164863
日期:2023.2.1
Abstract To investigate the effects and mechanisms of 4-(1H-indol-1-yl)-4-oxobutanoic acid spliced podophyllotoxin derivatives (3a–3l) on tumor cells. The MTT method was adopted to evaluate (3a–3l) antitumoractivity in vitro against A549 cells, A549/DDP cells, MCF-7 cells. The results showed that compound 3l had the most prominent inhibitory effect and high selectivity with IC50 18.53 ± 1.51 µM against
Designed switch from covalent to non-covalent inhibitors of carboxylesterase Notum activity
作者:Benjamin N. Atkinson、Nicky J. Willis、Yuguang Zhao、Chandni Patel、Sarah Frew、Kathryn Costelloe、Lorenza Magno、Fredrik Svensson、E. Yvonne Jones、Paul V. Fish
DOI:10.1016/j.ejmech.2023.115132
日期:2023.5
palmiteolate pocket with key interactions being aromatic stacking and a watermediated hydrogen bond to the oxyanion hole. These N-acyl indolines 4 will be useful tools for use in vitro studies to investigate the role of Notum in disease models, especially when paired with a structurally related covalent inhibitor (e.g. 4w and 2a). Overall, this study highlights the designed switch from covalent to non-covalent
Redox‐Neutral Multicatalytic Cerium Photoredox‐Enabled Cleavage of O−H Bearing Substrates
作者:Avery O. Morris、Louis Barriault
DOI:10.1002/chem.202400642
日期:——
An approach toward general β C−C bond scission reactions of carboxylicacids and hemiacetals is presented. The present work demonstrates the power of a multicatalytic cerium-based photoredox platform to enable direct hydrodecarboxylation of carboxylicacids as well as redox-neutral ring cleavage of lactol derivatives.