16522-55-7Relevant articles and documents
Direct Regio- and Diastereoselective Synthesis of δ-Lactams from Acrylamides and Unactivated Alkenes Initiated by RhIII-Catalyzed C?H Activation
Lee, Sumin,Rovis, Tomislav,Semakul, Natthawat
, p. 4965 - 4969 (2020)
We report a RhIII-catalyzed regio- and diastereoselective synthesis of δ-lactams from readily available acrylamide derivatives and unactivated alkenes. The reaction provides a rapid route to a diverse set of δ-lactams in good yield and stereoselectivity, which serve as useful building blocks for substituted piperidines. The regioselectivity of the reaction with unactivated terminal alkene is significantly improved by using Cpt ligand on the RhIII catalyst. The synthetic utility of the reaction is demonstrated by the preparation of a potential drug candidate containing a trisubstituted piperidine moiety. Mechanistic studies show that the reversibility of the C?H activation depends on the choice of Cp ligand on the RhIII catalyst. The irreversible C?H activation is observed and becomes turnover-limiting with [CptRhCl2]2 as catalyst.
Novel pyrimido-heterocyclic compound and preparation method and application thereof
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Paragraph 0180; 0182; 0183; 0184, (2019/02/19)
The invention discloses a novel pyrimido-heterocyclic compound and a preparation method and application thereof. The structure of the pyrimido-heterocyclic compound disclosed by the invention is as shown in a general formula I, and the definitions of all substituents are described in the specification and claims. The pyrimido-heterocyclic compound disclosed by the invention has much better inhibitory activity and selectivity for double-mutant EGFR kinase than the existing AZD-9291, can be used for preparing anti-tumor drugs, and overcomes the defect of drug tolerance of the first generation ofEGFR inhibitor.
Quinoline and quinazoline derivatives, preparation method, intermediate, composition and use thereof (by machine translation)
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Paragraph 0407; 0409; 0415; 0416, (2016/11/07)
The invention discloses a quinoline and quinazoline derivative I, a preparation method, an intermediate C, composition and an application. The preparation method comprises two methods, wherein the first method comprises steps as follows: 1, a compound A and a compound B react in a solvent under the action of alkali 1 to obtain a compound C; and 2, the product C obtained in the step 1 reacts with a compound D under the action of alkali 2; and the second comprises step as follows: the compound A and a compound E react in the solvent under the action of the alkali 1. The invention further provides the application of the compound represented in formula I or medicine composition in preparation of an EGFR (epidermal growth factor receptor) tyrosine kinase inhibitor, an A431 or H1975 cell proliferation inhibitor or medicine for preventing or treating tumor diseases. The provided compound has better antitumor activity.