(D,L) cis-Chrysanthemic acid has been obtained in four steps from 2,2-dimethyl dimedone which involves Bamford-Stevens olefination and tandem cyclization-Grob fragmentation reactions. (C) 2000 Published by Elsevier Science Ltd. All rights reserved.
Eine einheitlich verlaufende aliphatische Benzilsäure-Typ-Umlagerung
作者:Alexander Schaltegger、Peter Bigler
DOI:10.1002/hlca.19860690721
日期:1986.10.29
An Uniformly Occurring Aliphatic Benzil-Benzilic-Acid-Type Rearrangement
均匀发生的脂族-苯甲酸-酸型重排
SUBSTITUTED BICYCLIC HETEROARYL COMPOUNDS AS RXR AGONISTS
申请人:CONNEXIOS LIFE SCIENCES PVT. LTD.
公开号:US20160333004A1
公开(公告)日:2016-11-17
The present invention relates to certain substituted bicyclic compounds that are agonists of RXR and which are therefore useful in the treatment of certain disorders that can be prevented or treated by activation of this receptor. In addition the invention relates to the compounds, methods for their preparation, pharmaceutical compositions containing the compounds and the uses of these compounds in the treatment of certain disorders.
Diastereoselective Bromination of Compounds Bearing a Cyclohex-3-enol Moiety: Application to the Enantioselective Synthesis of (1R)-<i>cis</i>-Deltamethrinic Acid
作者:Alain Krief、Stephane Jeanmart、Adrian Kremer
DOI:10.1021/jo8022507
日期:2008.12.19
(1R)-cis-chrysanthemic acid has been prepared in a few steps with complete control of the relative and absolute stereochemistry. Some mechanistic aspect of the addition of bromine to the C,C double bond of 2,2,5,5-tetramethylcyclohex-3-enol is disclosed.
Base induced isomerization of λ,δ-epoxyketones—III
作者:Y. Gaoni
DOI:10.1016/s0040-4020(01)93617-8
日期:1972.1
6-trimethylnorcarane-2-one (2). Dehydration of 2 with potassium hydrogen sulfate leads, partly, to [3.2.0]bicyclic ketones. Reaction of 2 with tosyl chloride in pyridine substitutes the 5-hydroxyl with chlorine; thionyl chloride in pyridine yields mainly bis-ethers of 2. Other reactions of 2 are described.