1,3-Dibromo-5,5-dimethylhydantoin as a Precatalyst for Activation of Carbonyl Functionality
作者:Čebular、Božić、Stavber
DOI:10.3390/molecules24142608
日期:——
improvement in the methods for addition-elimination reactions via activation of carbonyl functionality. In this paper, an advanced methodology for the direct esterification of carboxylic acids and alcohols, and for aldol condensation of aldehydes using widely available, inexpensive, and metal-free 1,3-dibromo-5,5-dimethylhydantoin under neat reaction conditions is reported. The method is air- and moisture-tolerant
Androstane and pregnane steroids with potent allosteric gaba receptor chloride ionophore modulating properties
申请人:RESEARCH TRIANGLE INSTITUTE
公开号:US10087211B2
公开(公告)日:2018-10-02
This invention describes compounds of Structures 1, 2, and 3 and their use as allosteric modulators of the GABA receptor chloride ionophore complex to alleviate stress, anxiety, mood disorders, seizures, depression, treatment of drug and alcohol abuse, memory, premenstrual disorders, and neural system damage.
Site-selective fluorination of organic compounds using 1-alkyl-4-fluoro-1,4-diazabicyclo[2.2.2]octane salts (selectfluor reagents)
作者:G. Sankar Lal
DOI:10.1021/jo00062a023
日期:1993.5
The new ''N-F''-type electrophilic reagent family of 1-alkyl-4-fluoro-1,4-diazabicyclo[2.2.2]octane salts8d (derived from elemental fluorine (F2) and 1-alkyl-1,4-diazabicyclo[2.2.2]octane salts) has been found to be very effective for the fluorination of a wide variety of organic substrates. These include steroidal enol acetates and silyl enol ethers, phenyl-substituted olefins, sulfides bearing alpha-H atoms, certain carbanions, and mildly activated aromatic compounds. The products were obtained with good yields and regioselectivity under very mild reaction conditions.
ANDROSTANE AND PREGNANE STEROIDS WITH POTENT ALLOSTERIC GABA RECEPTOR CHLORIDE IONOPHORE MODULATING PROPERTIES
申请人:RESEARCH TRIANGLE INSTITUTE
公开号:US20170051008A1
公开(公告)日:2017-02-23
This invention describes compounds of Structures 1, 2, and 3 and their use as allosteric modulators of the GABA receptor chloride ionophore complex to alleviate stress, anxiety, mood disorders, seizures, depression, treatment of drug and alcohol abuse, memory, premenstrual disorders, and neural system damage.