Neurodegenerative diseases (NDs) are currently incurable
diseases
that cause progressive degeneration of nerve cells. Many of the disease-causing
proteins of NDs are “undruggable” for traditional small-molecule
inhibitors (SMIs). None of the compounds that attenuated the amyloid-β
(Aβ) accumulation process have entered clinical practice, and
many phase III clinical trials of SMIs for Alzheimer’s disease
(AD) have failed. In recent years, emerging targeted protein degradation
(TPD) technologies such as proteolysis-targeting chimeras (PROTACs),
lysosome-targeting chimaeras (LYTACs), and autophagy-targeting chimeras
(AUTACs) with TPD-assistive technologies such as click-formed proteolysis-targeting
chimeras (CLIPTACs) and deubiquitinase-targeting chimera (DUBTAC)
have developed rapidly. In vitro and in vivo experiments have also confirmed that TPD technology can target the
degradation of ND pathogenic proteins, bringing hope for the treatment
of NDs. Herein, we review the latest TPD technologies, introduce their
targets and technical characteristics, and discuss the emerging TPD
technologies with potential in ND research, with the hope of providing
a new perspective for the development of TPD technology in the NDs
field.
A mild cascade annulation of Co(III)-catalyzed N-chlorobenzamide with 2-acetylenic ketones at room temperature has been reported. This reaction sets N-Cl bond of N-chlorobenzamide as an internal oxidant, displaying broad functional group tolerance and excellent reverse selectivity of alkyne insertion under mild and safe conditions. The cascade reaction offers a straightforward and mild protocol to construct isoquinolones with high yields at room temperature.
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