Aziridinium ions are usefulreactive intermediates for the synthesis of enantiomerically enriched buildingblocks. However, N,N-dialkyl aziridinium ions are relatively underutilized in the synthesis of optically active molecules as compared to other three-membered ring cogeners, aziridines and epoxides. The characterization of both optically active aziridinium ions and secondary β-halo amines as the
Pentaphenylcyclopentadienyl ruthenium complexes (3) are excellent catalysts for the racemization of secondary alcohols at ambient temperature. The combination of this process with enzymatic resolution of the alcohols results in a highly efficient synthesis of enantiomericallypure acetates at room temperature with short reaction times for most substrates. This new reaction was applied to a wide range
Discovery of a Novel Series of Potent and Selective Alkynylthiazole-Derived PI3Kγ Inhibitors
作者:Upul K. Bandarage、Alex M. Aronov、Jingrong Cao、Jon H. Come、Kevin M. Cottrell、Robert J. Davies、Simon Giroux、Marc Jacobs、Sudipta Mahajan、David Messersmith、Cameron S. Moody、Rebecca Swett、Jinwang Xu
DOI:10.1021/acsmedchemlett.0c00573
日期:2021.1.14
family of enzymes that control a wide variety of cellular functions such as cell growth, proliferation, differentiation, motility, survival, and intracellular trafficking. PI3Kγ plays a critical role in mediating leukocyte chemotaxis as well as mast cell degranulation, making it a potentially interesting target for autoimmune and inflammatory diseases. We previously disclosed a novel series of PI3Kγ inhibitors
Optisch aktive alpha-Aminoaldehyde, Verfahren zu ihrer Herstellung und ihre Verwendung zur stereoselektiven Herstellung optisch aktiver beta-Aminoalkohole
申请人:BAYER AG
公开号:EP0288764A1
公开(公告)日:1988-11-02
Die Erfindung betrifft neue optisch aktive α-Aminoaldehyde der Formeln
in denen
R₁ für einen gegebenenfalls substituierten Alkyl-, Alkenyl-, Aralkyl- oder Arylrest steht und
R₂ und R₃ unabhängig voneinander eine gegebenenfalls substituierte Alkyl-, Alkenyl-, Cycloalkyl- oder Aralkyl-Gruppe bedeuten, zusammen einen gegebenenfalls substituierten Phenylen-(1,2)-bis-methylen-Rest bilden oder R₂ ein gegebenenfalls substituierter Alkyl-, Cycloalkyl- oder Aralkylrest ist und R₃ zusammen mit R₁ einen Propylen-1,3-Rest bildet,
ein Verfahren zu ihrer Herstellung und ihre Verwendung zur stereoselektiven Herstellung von optisch aktiven β-Aminoalkoholen.
Stereoselective Deprotonation of Chiral and Achiral 2-Aminoalkyl Carbamates: Synthesis of Optically Active β-Amino Alcohols via 1-Oxy-Substituted Alkyllithium Intermediates