Chemoenzymatic synthesis of 2-substituted 2-fluoro-1,3-dioxygenated chiral building blocks
摘要:
A series of 2-substituted-2-fluoro-1,3-dioxygenated chiral building blocks are synthesized via a chemoenzymatic route using either (i) lipase catalyzed monohydrolysis of suitably functionalized malonic diesters, or (ii) lipase catalyzed monoacetylation of suitably functionalized 1,3-propanediols. (C) 1999 Elsevier Science Ltd. All rights reserved.
Methods for synthesis of dicarbamate compounds and intermediates in the formation thereof
申请人:Mortko Henry
公开号:US20060241298A1
公开(公告)日:2006-10-26
Disclosed is a method of making 2-substituted-2-halo-1,3-propanediols via reduction of corresponding malonate compounds. Also disclosed is a method of making 2-substituted-2-halo-1,3-dicarbamate compounds (such as halo derivatives of felbamate, including fluorofelbamate) via reduction of malonate compounds, followed by carbamoylation. Reduction of the malonate compounds is carried out using an electrophilic hydride reagent.
Chiral Phosphoric Acid Catalyzed Highly Enantioselective Desymmetrization of 2-Substituted and 2,2-Disubstituted 1,3-Diols via Oxidative Cleavage of Benzylidene Acetals
作者:Shan-Shui Meng、Yong Liang、Kou-Sen Cao、Lufeng Zou、Xing-Bang Lin、Hui Yang、K. N. Houk、Wen-Hua Zheng
DOI:10.1021/ja507332x
日期:2014.9.3
A highly enantioselective catalytic protocol for the desymmetrization of a wide variety of 2-substituted and 2,2-disubstituted 1,3-diols is reported. This reaction proceeds through the formation of an "ortho ester" intermediate via oxidation of 1,3-diol benzylidene acetal by dimethyldioxirane (DMDO) and the subsequent proton transfer catalyzed by chiral phosphoric acid (CPA). The mechanism and origins
The present invention relates to novel felbamate derivatives and their use to treat neurological diseases such as epilepsy and to treat tissue damage resulting form ischemic events. The felbamate derivatives are modified to prevent the formation of metabolites that are believed responsible for the toxicity associated with felbamate therapy.
Lipase mediated preparation of differently protected homochiral 2-aryl-2-fluoro-1,3-propanediols
作者:Giuseppe Guanti、Enrica Narisano、Renata Riva
DOI:10.1016/s0957-4166(98)00181-5
日期:1998.6
Lipase mediated asymmetric monohydrolysis of 2-aryl-2-fluoromalonic acid diesters or monoacetylation of 2-aryl-2-fluoro-1,3-propanediols affords chiral fluorinated polyfunctionalized C-3 synthons in excellent enantiomeric excess and acceptable chemical yields. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
FELBAMATE DERIVED COMPOUNDS
申请人:THE UNIVERSITY OF VIRGINIA ALUMNI PATENTS FOUNDATION