New cycloaliphatic unsaturated ketones and their use as perfuming and odour-modifying agents in the manufacture of perfumes and perfumed products, and as flavouring and taste-modifying agents in the preparation of foodstuffs in general and imitation flavours for foodstuffs, beverages, animal feeds, pharmaceutical preparations and tobacco products. Methods for the preparation of said cycloaliphatic unsaturated ketones.
KRAS G12C INHIBITORS AND METHODS OF USING THE SAME
申请人:AMGEN INC.
公开号:US20180177767A1
公开(公告)日:2018-06-28
Provided herein are KRAS G12C inhibitors, composition of the same, and methods of using the same. These inhibitors are useful for treating a number of disorders, including pancreatic, colorectal, and lung cancers.
A Catalytic Enantioselective Conjugate Addition of Cyanide to Enones
作者:Yuta Tanaka、Motomu Kanai、Masakatsu Shibasaki
DOI:10.1021/ja801201r
日期:2008.5.1
The first synthetically useful catalytic enantioselectiveconjugateaddition of cyanide to enones is described. The optimized conditions involved a Gd catalyst (5 or 10 mol %) derived from ligands 3 or 4 and a 1:1 ratio of TBSCN and 2,6-dimethylphenol. The reaction exhibited excellent to high enantioselectivity and a wide substrate scope. Moreover, the 1,4-adduct was exclusively produced over the 1
Highly Enantioselective Conjugate Additions to α,β-Unsaturated Ketones Catalyzed by a (Salen)Al Complex
作者:Mark S. Taylor、David N. Zalatan、Andreas M. Lerchner、Eric N. Jacobsen
DOI:10.1021/ja044999s
日期:2005.2.1
Chiral (salen)Al complex 1a catalyzes the highly enantioselective conjugate addition of carbon- and nitrogen-based nucleophiles to acyclic α,β-unsaturatedketones. This methodology is tolerant of substantial variation of the ketone structure, providing access to a wide range of useful chiral building blocks in high yield and enantiomeric excess. Synthetic manipulations of the conjugate addition products
Catalyst for asymmetric epoxidation of enones and process for producing optically active epoxide employing it
申请人:——
公开号:US20010051737A1
公开(公告)日:2001-12-13
A complex catalyst for asymmetric epoxidation of enones, which comprises:
(A) an optically active binaphthol,
(B) lanthanum triisopropoxide,
(C) triphenylphosphine oxide, and
(D) cumene hydroperoxide or tert-butyl hydroperoxide.