Proline-Catalyzed Cyclization Reaction for the Synthesis of Naphthostyrils: Application to the Total Synthesis of Prioline
作者:Kyeong-Yong Park、Ha-Jeong Song、Jung-Nyoung Heo
DOI:10.1002/adsc.201500367
日期:2015.10.12
A new method for the synthesis of naphthostyrils is described. In this method, a sequential Stille coupling and proline-catalyzedcyclization procedure is employed for the reaction of 4-bromooxindoles and β-tributylstannyl-α,β-unsaturated ketones. The utility of this methodology is demonstrated in the first totalsynthesis of prioline from a simple 2-isopropylphenol.
The present invention relates to O-GIcNAc hydrolase (OGA) inhibitors. The invention is also directed to pharmaceutical compositions comprising such compounds, to processes for preparing such compounds and compositions, and to the use of such compounds and compositions for the prevention and treatment of disorders in which inhibition of OGA is beneficial, such as tauopathies, in particular Alzheimer's disease or progressive supranuclear palsy; and neurodegenerative diseases accompanied by a tau pathology, in particular amyotrophic lateral sclerosis or frontotemporal lobe dementia caused by C90RF72 mutations.
The present invention relates to O-GlcNAc hydrolase (OGA) inhibitors. The invention is also directed to pharmaceutical compositions comprising such compounds, to processes for preparing such compounds and compositions, and to the use of such compounds and compositions for the prevention and treatment of disorders in which inhibition of OGA is beneficial, such as tauopathies, in particular Alzheimer's disease or progressive supranuclear palsy; and neurodegenerative diseases accompanied by a tau pathology, in particular amyotrophic lateral sclerosis or frontotemporal lobe dementia caused by C9ORF72 mutations.
Direct One-Pot Synthesis of Naphthoxindoles from 4-Bromooxindoles by Suzuki-Miyaura Coupling and Aldol Condensation Reactions
作者:Kyeong-Yong Park、Bum Tae Kim、Jung-Nyoung Heo
DOI:10.1002/ejoc.201301242
日期:2014.1
An efficient one-pot synthesis of naphthoxindoles by using 4-bromoindolin-2-ones and 2-formylphenylboronic acids has been developed. The coupling reaction proceeds in good to excellent yields under microwave irradiation through a Suzuki–Miyaura coupling and an aldolcondensation cascade reaction. In addition, this protocol permits the facile construction of naphthoxindoles through an expanded scope