The present invention relates to spiroindolinone derivatives of the formula
and enantiomers and pharmaceutically acceptable salts and esters thereof which have utility as antiproliferative agents, especially, as anticancer agents.
Stereoselective Synthesis of Trisubstituted Olefins by a Directed Allylic Substitution Strategy
作者:Yvonne Schmidt、Bernhard Breit
DOI:10.1002/chem.201100843
日期:2011.10.10
α‐methylene aldehydes. Addition of an organometallic reagent and introduction of the o‐DPPB group by esterification was followed by the o‐DPPB‐directed copper‐mediated allylic substitution with a Grignard reagent to furnish stereodefined trisubstituted olefins. Additionally, incorporation of a stereocenter from the chiralpool allowed the preparation of an enantiomericallypureolefin that bore three alkyl
There are provided spiroindolinones of the formula
and enantiomers and pharmaceutically acceptable salts and esters thereof which have utility as antiproliferative agents, especially, as anticancer agents.
Improved emulsion polymerization process utilizing a specifically defined ethylenically unsaturated polymerizable water-soluble nonionic surfactant formed by the reaction of a diallylamine, ethylene oxide, and propylene oxide and/or butylene oxide
申请人:BASF AKTIENGESELLSCHAFT
公开号:EP0737693A1
公开(公告)日:1996-10-16
An improved emulsion polymerization process utilizing at least one substantially water-insoluble ethylenically unsaturated monomer is provided for forming discrete solid polymeric particles suitable for use in coating and/or adhesive applications. During at least the initial portion of the polymerization a dissolved water-soluble polymerizable surfactant (as defined) formed by the reaction of a diallylamine, ethylene oxide, and propylene oxide and/or butylene oxide additionally is provided in the reaction zone in the continuous aqueous phase. The water-soluble polymerizable surfactant undergoes copolymerization and is substantially completely consumed during the course of the emulsion polymerization. The emulsion polymerization is carried out on a stable basis, there is no need to attempt to remove a surfactant at the conclusion of the emulsion polymerization, and the resulting polymeric particles are particularly well suited for coating and/or adhesive end uses where they form stable films and exhibit improved adhesion characteristics.
Verfahren zur Herstellung von Polyhydroxyethern und hiermit erhältliche unsymmetrische Polyhydroxyether
申请人:DEGUSSA AG
公开号:EP0863122A1
公开(公告)日:1998-09-09
Die Erfindung richtet sich auf ein verbessertes Verfahren zur Herstellung von Polyhydroxyethern der allgemeinen Formel (I) (HO)(w-m)W(OV)m , worin W für einen organischen Rest und OV für ein hydroxylgruppenhaltiges Strukturelement der allgemeinen Formel (III)
Umgesetzt wird mehrwertiger Alkohol W(OH)w (II) mit einer α,β-ungesättigten Carbonylverbindung XCH=CY-CZ=O (IV) und Formaldehyd in Gegenwart einer Base. Hierbei werden in eine wäßrige Lösung oder Suspension, enthaltend mindestens 10 Mol-% des mehrwertigen Alkohols (II), mindestens 10 bis 70 Mol-% des Formaldehyds und mindestens 10 Mol-% der Base, die α,β-ungesättige Carbonylverbindung (IV) und die restlichen Mengen an Formaldehyd, mehrwertigem Alkohol (II) und Base kontinuierlich oder periodisch eingetragen.
Bevorzugte mehrwertige Alkohole (II) sind Pentaerythritol, TMP und TME, bevorzugte Carbonylverbindungen (IV) Acrolein und α-Alkylacrolein.
Erhältlich sind auch neue unsymmetrische Polyhydroxyether.