Chiral Phosphoric Acid Catalyzed Kinetic Resolution of 2‐Amido Benzyl Alcohols: Asymmetric Synthesis of 4
<i>H</i>
‐3,1‐Benzoxazines
作者:Subramani Rajkumar、Mengyao Tang、Xiaoyu Yang
DOI:10.1002/anie.201913896
日期:2020.2.3
An efficient method for the asymmetricsynthesis of 4H-3,1-benzoxazines was developed by kinetic resolution of 2-amido benzyl alcohols using chiral phosphoric acidcatalyzed intramolecular cyclizations. A broad range of benzyl alcohols (both secondary and tertiaryalcohols) were kinetically resolved with high selectivities, with an s factor of up to 94. Mechanistic studies were performed to elucidate
Lactam compound, preparation method and use thereof
申请人:OCEAN UNIVERSITY OF CHINA
公开号:US10993938B2
公开(公告)日:2021-05-04
Provided is a lactam compound, a tautomer, a stereoisomer, a racemate, a nonequal mixture of enantiomers, a geometric isomer, a solvate, a pharmaceutically acceptable salt thereof, or a solvate of the salt of the compound, and a pharmaceutical composition containing the compound. Also provided are the use of such compounds and their pharmaceutical compositions as drugs, especially as antiviral drugs.