A directed enolization strategy enables by-product-free construction of contiguous stereocentres en route to complex amino acids
作者:Fenglin Hong、Timothy P. Aldhous、Paul D. Kemmitt、John F. Bower
DOI:10.1038/s41557-024-01473-5
日期:——
Homochiral α-amino acids are widely used in pharmaceutical design as key subunits in chiral catalyst synthesis or as buildingblocks in synthetic biology. Many synthetic methods have been developed to access rare or unnatural variants by controlling the installation of the α-stereocentre. By contrast, and despite their importance, α-amino acids possessing β-stereocentres are much harder to synthesize
Michael Addition Reaction Catalyzed by Imidazolium Chloride to Protect Amino Groups and Construct Medium Ring Heterocycles
作者:Dai、Tian、Li、Shang、Luo、Wang、Li、Zhang、Li、Yuan
DOI:10.3390/molecules24234224
日期:——
An effective approach for amino protection and construction of a seven-membered ring has been developed. The method uses imidazolium chloride to carry out the Michael addition reaction at low temperatures and perform amino deprotection or construction of a seven-membered ring at high temperatures.