Magnesium salt promoted tandem nucleophilic addition–Oppenauer oxidation of aldehydes with organozinc reagents
作者:Ying Fu、Xing Ling Zhao、Hulmet Hügel、Danfeng Huang、Zhengyin Du、Kehu Wang、Yulai Hu
DOI:10.1039/c6ob01668e
日期:——
A magnesium salt promoted synthesis of ketones via tandem nucleophilic addition–Oppenauer oxidation of aldehydes using organozinc chemistry was demonstrated. Magnesium salts concomitantly generated via magnesium metal mediated organohalide zincation exhibit high efficacy for nucleophilic addition of organozinc reagents to aromatic aldehydes and thereafter Oppenauer oxidation whereby ketones are formed
MeZnOMe-mediated reaction of aldehydes with Grignard reagents: A glance into nucleophilic addition/Oppenauer oxidation pathway
作者:Ying Fu、Xian-Zhen Ma、Chun-Zhao Shi、Tong Shen、Zhengyin Du
DOI:10.1002/aoc.4462
日期:2018.9
A novel organozincate of RMgX ⋅MeZnOMe ⋅LiCl type, formed in situ via transmetalation of Grignard reagent RMgBr ⋅LiCl with MeZnOMe, is shown to be an excellent organometallic species in the nucleophilic addition/Oppenauer oxidation of aldehydes to generate aromatic ketones in high yield. This transformation allows quick access to structurally diverse aryl, heteroaryl, benzyl and alkyl ketones with
An efficient one-pot synthesis of polyphenolic amino acids and evaluation of their radical-scavenging activity
作者:Luís S. Monteiro、Fátima Paiva-Martins、Sandra Oliveira、Inês Machado、Marlene Costa
DOI:10.1016/j.bioorg.2019.102983
日期:2019.8
4-dihydroxyphenylglycyl dipeptide derivative. Radical-scavenging activity studies of the polyphenolic amino acid derivatives showed a sharp increase in activity with the increase in number of hydroxyl or catechol groups present. Cyclic voltammetry experiments established a correlation between oxidation peak potentials and the radical-scavenging activity.
Amino-phthalazinone derivatives active as kinase inhibitors, process for their preparation and pharmaceutical compositions containing them
申请人:Pulici Maurizio
公开号:US20050020583A1
公开(公告)日:2005-01-27
Compounds which are amino-phthalazinone derivatives according to formula 1 and pharmaceutically acceptable salts thereof, together with pharmaceutical compositions comprising them are disclosed; these compounds or compostions are useful in the treatment of diseases caused by and/or associated with an altered protein kinase activity such as cancer, cell proliferative disorders, Alzheimer's disease, viral infections, autoimmune diseases and neurodegenerative disorders.
Tetracyclic pyrazole derivatives as kinase inhibitors, process for their preparation and pharmaceutical compositions comprising them
申请人:Vanotti Ermes
公开号:US20060264493A1
公开(公告)日:2006-11-23
The present invention provides a method for treating diseases caused by and/or associated with an altered protein kinase activity which comprises administering to a mammal in need thereof an effective amount of a tetracyclic pyrazole. The invention also provides specific tetracyclic pyrazole derivatives, useful intermediates, a library comprising at least two of them, a process for their preparation and the pharmaceutical compositions containing them, which are useful in the treatment of diseases caused by and/or associated with an altered protein kinase activity such as cancer, cell proliferative disorders, viral infections, autoimmune diseases and neurodegenerative disorders.