Three-step synthesis of oxylipins from D. loretense
作者:Shreyosree Chatterjee、Gayan A. Abeykoon、Jason S. Chen
DOI:10.1016/j.tetlet.2019.06.040
日期:2019.7
A three-step convergent synthesis of an immunostimulatory oxylipin was developed using an olefin cross metathesis approach. The alkene fragments were prepared in two steps from commercially available starting materials with high stereoselectivity. In particular, an organocatalytic aldehyde α-oxygenation gave high enantioselectivity and yield using as little as 2 mol% catalyst. This synthesis represents
Method for producing enantiomer-free 6,8 dihydroxy octanoic acid esters by means of asymmetric, catalytic hydrogenation
申请人:——
公开号:US20040030178A1
公开(公告)日:2004-02-12
The invention relates to a process for the preparation of compounds of the general formula I
1
in which R
1
represents a C
1
-C
20
-alkyl group, a C
3
-C
12
-cycloalkyl group, a C
7
-C
12
-aralkyl group or a mono- or bi-nuclear aryl group, in which a ketone of formula II
2
wherein R
1
is as defined above, is subjected to asymmetric hydrogenation.
[DE] VERFAHREN ZUR HERSTELLUNG VON ENANTIOMERENREINEN 6,8-DIHYDROXYOCTANSÄUREESTERN DURCH ASYMMETRISCHE KATALYTISCHE HYDRIERUNG<br/>[EN] METHOD FOR PRODUCING ENANTIOMER-FREE 6,8 DIHYDROXY OCTANOIC ACID ESTERS BY MEANS OF ASYMMETRIC, CATALYTIC HYDROGENATION<br/>[FR] PROCEDE POUR LA PRODUCTION D'ESTERS DE L'ACIDE 6,8-DIHYDROCAPRYLIQUE EXEMPTS D'ENANTIOMERES PAR HYDROGENATION CATALYTIQUE ASYMETRIQUE
申请人:ASTA MEDICA AG
公开号:WO2002010113A1
公开(公告)日:2002-02-07
Die Erfindung betrifft ein Verfahren zur Herstellung von Verbindungen der allgemeinen Formel (I), in der R1 eine C¿1?-C20-Alkylgruppe, C3-C12-Cycloalkylgruppe, C7-C12-Aralkylgruppe oder eine ein- oder zweikernige Arylgruppe bedeutet, bei dem man ein Keton der Formel (II), worin R?1¿ die obige Bedeutung hat, asymmetrisch hydriert.
It is provided that a method for producing an oxygen-containing compound, characterized in that an olefin compound having a carbon-carbon double bond which is bonded to a methyl or methylene group is reacted with an organic hydroperoxide in the presence of an ionic liquid and a selenium compound.
It is provided that a method for producing an oxygen-containing compound, characterized in that an olefin compound having a carbon-carbon double bond which is bonded to a methyl or methylene group is reacted with an organic hydroperoxide in the presence of an ionic liquid and a selenium compound.