Monocyclic β-lactams related to nocardicins were enantioselectively synthesized from phthal-imidoacetyl chloride and hexahydro-1, 3, 5-triazines (4) via a [2+2] cycloaddition reaction. The preparation and biological activity of some typical acyl derivatives are also described.
Mono-Chlorination of Electron-Rich Arylalkyl- and Heteroarylalkyl-amines and Amino Acids Using Sulfuryl Chloride
作者:Guixue Yu、Helen J. Mason、Kim Galdi、Ximao Wu、Lyndon Cornelius、Ning Zhao、Michael Witkus、William R. Ewing、John E. Macor
DOI:10.1055/s-2003-37362
日期:——
Sulfuryl chloride has been used to mono-chlorinate electron-rich arylalkyl- and heteroarylalkyl-amines and amino acids in a mild and efficient one-pot transformation with straightforward purification. Protection of the amines was not needed, and racemization of the chiral amino acids was minimal.