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
A highly regioselective ortho arylation of N-(2-benzoylphenyl)benzamides has been achieved with aryl iodides in the presence of 10 mol% Pd(OAc)2 and a stoichiometric amount of AgOAc under solvent-free conditions via C-H activation to produce the corresponding 2-arylated benzamides in good yields.
COX-1/COX-2 inhibitors based on the methanone moiety
作者:G Dannhardt
DOI:10.1016/s0223-5234(01)01330-7
日期:2002.2
This paper focuses on the synthesis and the in vitro testing of dual COX-1/COX-2 inhibitors. Starting from structures of non-steroidal anti-inflammatory drugs (NSAIDs) the diaryl methanone element was chosen as a lead. Modifications were carried out on this scaffold to obtain potent inhibitors of the COX enzymes. The N-(2-aroylphenyl)sulphonamides and -amides were studied in detail, and to consolidate the data evaluated the corresponding 3- and 4-regioisomers were also investigated. The potency and the enzyme selectivity were varied by structural modifications of the lead. (C) 2002 Published by Editions scientifiques et medicales Elsevier SAS.
Schmidt, Richard R.; Beitzke, Bernhard, Chemische Berichte, 1983, vol. 116, # 6, p. 2115 - 2135
作者:Schmidt, Richard R.、Beitzke, Bernhard
DOI:——
日期:——
SmI2 mediated synthesis of 2,3-disubstituted indole derivatives
作者:Xuesen Fan、Yongmin Zhang
DOI:10.1016/s0040-4020(03)00143-1
日期:2003.3
A novel preparation of 2,3-disubstituted indole derivatives was achieved through SmI2 induced intramolecular reductive coupling reactions of acylamido carbonyl compounds. (C) 2003 Elsevier Science Ltd. All rights reserved.