Stereoselective synthesis of trans-hydroazulene derivatives by tandem Michael-intramolecular Wittig reactions of a cyclic phosphonium ylide with alkyl or aryl 1-cyclopentenyl ketones
摘要:
The reaction of 1-cyclopentenyl ketones 4a-c with 1,1-diphenylphospholanium ylide 2 gave trans-hydroazulene derivatives 5a-c with high diastereoselectivity via tandem Michael-intramolecular Wittig reactions.
Efficient Cu-Catalyzed Asymmetric Conjugate Additions of Alkylzincs to Trisubstituted Cyclic Enones
作者:Sylvia J. Degrado、Hirotake Mizutani、Amir H. Hoveyda
DOI:10.1021/ja021081x
日期:2002.11.1
The first examples of efficient catalytic asymmetric conjugate addition (ACA) of alkylzincs to trisubstituted cyclicenones is disclosed. These Cu-catalyzed reactions proceed efficiently with five- and seven-membered ring substrates to afford the desired products in >/=95% ee. Intermediate enolates can be trapped with alkyl halides to generate a quaternary stereogenic center. The requisite chiral ligand
公开了烷基锌与三取代环烯酮的有效催化不对称共轭加成(ACA)的第一个实例。这些铜催化的反应与五元环和七元环底物一起有效地进行,以 >/= 95% ee 提供所需的产物。中间体烯醇可以被烷基卤化物捕获以生成四元立体中心。必需的手性配体由市售材料制备,并且可以原位使用而无需在商业级 (CuOTf)2.PhMe 存在下进一步纯化。
[EN] SUBSTITUTED INHIBITORS OF MENIN-MLL AND METHODS OF USE<br/>[FR] INHIBITEURS SUBSTITUÉS DE MÉNINE-MLL ET MÉTHODES D'UTILISATION
申请人:KURA ONCOLOGY INC
公开号:WO2017161028A1
公开(公告)日:2017-09-21
The present disclosure provides methods of inhibiting the interaction of menin with MLLl, MLL2 and MLL-fusion oncoproteins. The methods are useful for the treatment of leukemia, solid cancers, diabetes and other diseases dependent on activity of MLLl, MLL2, MLL fusion proteins, and/or menin. Compositions for use in these methods are also provided.
The disclosure provides, among other things, insulin-producing cells derived from stem cells, such as human stem cells and neural stem cells. The disclosure discloses a relationship between caudalizing factors and the differentiation of insulin-producing cells.
Compositions and Methods for the Production of Pyrimidine and Pyridine Compounds with BTK Inhibitory Activity
申请人:Hodous Brian L.
公开号:US20140162983A1
公开(公告)日:2014-06-12
The present invention provides novel pyrimidine and pyridine compounds according to Formula (I), Formula (II), Formula (III), Formula (IV) and Formula (V) their manufacture and use for the treatment of hyperproliferative diseases including, but not limited to, cancer, lupus, allergic disorders, Sjogren's disease and rheumatoid arthritis. In preferred embodiments, the present invention describes irreversible kinase inhibitors including, but not limited to, inhibitors of Bruton's tyrosine kinase.
ISOSORBIDE DERIVATIVES AND THEIR USE AS FLAVOR MODIFIERS, TASTANTS, AND TASTE ENHANCERS
申请人:TACHDJIAN Catherine
公开号:US20130295261A1
公开(公告)日:2013-11-07
The present invention provides isosorbide derivatives having the formula shown below and certain subgenera or species thereof, as flavor or taste modifiers, particularly, savory (“umami”) taste modifiers, savory flavoring agents and savory flavor enhancers in foods, beverages, and other comestible compositions,