Synthesis of the C1-C14 Fragment of Sarcoglaucol-16-one via Z-Selective Ando-Type Horner-Wadsworth-Emmons Olefination
作者:Sabine Laschat、Christoph Gastl
DOI:10.1055/s-0029-1218825
日期:2010.8
A synthetic strategy involving a Z-selective Horner-Wadsworth-Emmons olefination was developed for the preparation of the sarcoglaucolone precursor methyl (2Z,6E)-8-(methoxymethoxy)-6-methyl-2-[(3E)-4-methyl-5-oxopent-3-enyl]-9-[(trimethylsilyl)methyl]deca-2,6,9-trienoate. The target compound was isolated in a E/Z ratio of 17:83
[EN] QUINAZOLINONE-TYPE COMPOUNDS AS CRTH2 ANTAGONISTS<br/>[FR] COMPOSÉS DE TYPE QUINAZOLINONE CONVENANT COMME ANTAGONISTES DE CRTH2
申请人:MERCK SHARP & DOHME
公开号:WO2012051036A1
公开(公告)日:2012-04-19
This application provides for compounds of the formula Formula I or a pharmaceutically acceptable salt thereof, wherein the individual variables are defined herein, as well as processes to prepare these compounds, pharmaceutical compositions comprising the same and their use in treating disease state associated with the CRTH2 receptor.
Enantioselective Synthesis of Allylic Alcohols via an Oxazaborolidinium Ion Catalyzed Diels−Alder/Retro-Diels−Alder Sequence
作者:Simon Jones、Damien Valette
DOI:10.1021/ol902280d
日期:2009.11.19
A triflimide-activated oxazaborolidine catalyst successfully promoted the asymmetric Diels−Alder reaction of 9-methylanthracene with methacrolein in high regio- and enantioselectivity. The cycloadduct obtained was subsequently used as a chiral template to access secondary and tertiary allylic alcohols in good to high enantiomeric excess via a cycloreversion by flash vacuum pyrolysis.
Kinetic Resolution of Aryl Alkenylcarbinols Catalyzed by Fc-PIP
作者:Bin Hu、Meng Meng、Shanshan Jiang、Weiping Deng
DOI:10.1002/cjoc.201200410
日期:2012.6
An effective kineticresolution of a variety of arylalkenylcarbinolscatalyzed by nonenzymatic acyl transfer catalyst Fc‐PIP was developed, affording corresponding unreacted alcohols in good to excellent ee value up to 99% and with selectivity factors up to 24.
A highly enantioselective synthesis of chiral allylic alcohols by asymmetric addition of novel mixed reagents of trialkenylbismuthines/dialkylzincs to aldehydes
作者:Itaru Sato、Noriaki Asakura、Taizo Iwashita
DOI:10.1016/j.tetasy.2007.10.031
日期:2007.11
A novel mixture of reagents of trialkenylbismuthines/dialkylzincs was developed and applied toward the synthesis of chiral allylic alcohols. The chiral β-amino alcohols catalyzed addition of the mixed reagents of trialkenylbismuthines/dialkylzincs to aldehydes gave enantiomerically enriched allylic alcohols with up to 97% ee.