1210934-04-5Relevant articles and documents
Preparation method of chiral 3-substituted pyrrolidine derivative
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, (2020/11/01)
The invention provides a preparation method of a chiral 3-substituted pyrrolidine derivative. The preparation method comprises an intermediate preparation step, a diastereomer mixture preparation step, a chiral separation step and a chiral 3-substituted pyrrolidine derivative synthesis step. According to the invention, through catalytic asymmetric kinetic resolution, a mixture of two diastereoisomers is efficiently converted into a diastereoisomer with a certain single configuration, chiral separation is realized, a key intermediate is obtained with high yield, and a series of chiral 3-substituted pyrrolidine derivatives are synthesized. The whole reaction route is mild in reaction condition, simple and convenient to operate, high in resolution efficiency, high in atom economy, low in costand suitable for industrial scale production.
QUINAZOLINE DERIVATIVES AS TYROSINE KINASE INHIBITOR, COMPOSITIONS, METHODS OF MAKING THEM AND THEIR USE
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Page/Page column 495, (2020/05/13)
The present disclosure relates to new compounds or pharmaceutically acceptable salts or stereoisomers thereof of formula I as inhibitors of receptor tyrosine kinases (RTK), in particular extracellular mutants of ErbB-receptors. The present disclosure also relates to methods of preparation these compounds, compositions comprising these compounds, and methods of using them in the treatment of cancer in mammals (e.g. humans).
KRAS G12C INHIBITORS
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Paragraph 0755, (2017/12/18)
The present invention relates to compounds that inhibit KRas G12C. In particular, the present invention relates to compounds that irreversibly inhibit the activity of KRas G12C, pharmaceutical compositions comprising the compounds and methods of use therefor.
Deprotonation de N-oxydes d'amines aliphatiques: schema reactionnel general et nouvelle synthese de pyrrolidines
Beugelmans, Rene,Benadjila-Iguertsira, Leila,Chastanet, Jacqueline,Negron, Guillermo,Roussi, Georges
, p. 725 - 734 (2007/10/02)
Amine oxides, 1, 5, 10, 15, 21, 23, when treated by lithium diisopropylamide undergo deprotonation.Monodeprotonation gives rise either to secondary amines and benzaldehyde resulting from the hydrolysis of an intermediate immonium (I) or to hydroxylamines via a Stevens-like rearrangement observed for the first time on an amine oxide.Double deprotonation gives an immonium ylid (Y) which, depending upon the structure of the initial tertiary amine yields either "head to head" piperazines (biradical-like behavior of (DD)) or aziridines.The immonium ylid (Y5) derived from trimethylamine oxide, whose formation and reactivity are reported for the first time, has remarkable property of undergoing cycloaddition reactions with unactivated olefins, leading to a new and efficient synthesis of various pyrrolidines.
