Halide-Free Dehydrative Allylation Using Allylic Alcohols Promoted by a Palladium−Triphenyl Phosphite Catalyst
摘要:
The triphenyl phosphite-palladium complex was found to effect catalytic substitution reactions of allylic alcohols via a direct C-O bond cleavage. The dehydrative etherification proceeded efficiently without any cocatalysts and bases to give allylic ethers in good to excellent yields.
compounds toward alkalimetalcations than trans isomers possibly because of the potential cooperative coordination of two electron-donating sidearms. All trans isomers showed almost the same stability constants toward Na+ and K+. On the other hand, in the case of cis isomers, the difference in the position of the two sidearms on the crown ring was found to remarkably affect the complexation properties toward
Synthesis of bis(bromomethyl) dimethyl crown ethers and complexation properties of their derivatives having electron-donating sidearms
作者:Yohji Nakatsuji、Tsuneharu Mori、Mitsuo Okahara
DOI:10.1016/s0040-4039(01)81190-4
日期:1984.1
Several bis(bromomethyl) dimethyl 15-crown-5, 18-crown-6, and 21-crown-7 were prepared according to two methods without protecting reactive bromo substituents. Cis and trans isomers of la are separated and the structures are inferred by considering the complexation property of their derivatives having electron-donating sidearms toward sodium and potassium cations.
SYNTHESIS OF FR901464 AND ANALOGS WITH ANTITUMOR ACTIVITY
申请人:KOIDE Kazunori
公开号:US20080096879A1
公开(公告)日:2008-04-24
The present invention provides novel analogs of FR901464, as well as an improved methodology for preparing FR901464 and its analogs. These compounds display an anti-cancer activity and are candidates for therapies against a number of disease states associated with dysfunctional RNA splicing.
[EN] FR901464 AND ANALOGS WITH ANTITUMOR ACTIVITY AND METHOD FOR THEIR PREPARATION<br/>[FR] FR901464 ET ANALOGUES PRÉSENTANT UNE ACTIVITÉ ANTITUMORALE, ET PROCÉDÉ DE PRÉPARATION DE CES COMPOSÉS
申请人:UNIV PITTSBURGH
公开号:WO2009031999A1
公开(公告)日:2009-03-12
The present invention provides analogs of FR901464, as well as a methodology for preparing FR901464 and its analogs. These compounds display an anti-cancer activity and are candidates for therapies against a number of disease states associated with dysfunctional RNA splicing.
A compound comprising a substituent of the formula (II) is disclosed as an HIV protease inhibitor. Intermediates for making such compounds and processes for making such intermediates are also disclosed.