Compounds 1 or 2 which possess dual-acting PAF antagonist/TxSI in a previous paper were modified and evaluated for the dual-acting activity. It was found that several compounds were potent dual-acting PAF antagonist/TxSI in and ex vivo. 6-(2-Chlorophenyl)-3-[4-[(E /Z)-6-ethoxvcarbonyl-1-(3-pyridyl)-1-hexenyl]phenylmethyl]-8,11-dimethyl-2,3.4,5-tetrahydro-8H-pyrido[4',3': 4.5]thieno[3.2-f][1,2,4]triazolo[4,3-a][1.4]diazepine (12) is excellent orally dual-acting PAF antagonist/TxSI. (C) 2002 Elsevier Science Ltd. All rights reserved.
Nickel‐Catalyzed Enantioselective Reductive Alkyl‐Carbamoylation of Internal Alkenes
作者:Xianqing Wu、Aneta Turlik、Baixue Luan、Feng He、Jingping Qu、K. N. Houk、Yifeng Chen
DOI:10.1002/anie.202207536
日期:2022.9.5
The enantioselective reductive dicarbofunctionalization of internalalkenes has been developed to enable the formation of vicinal stereogenic centers. This protocol allows for facile synthesis of chiral pyrrolidinones bearing vicinal or quaternary stereocenters with excellent enantio- and diastereoselectivities. DFT calculations suggest that the enantiodetermining step is intramolecular migratory insertion