286961-14-6Relevant articles and documents
Concise synthesis and antimalarial activity of all four mefloquine stereoisomers using a highly enantioselective catalytic borylative alkene isomerization
Ding, Jinyue,Hall, Dennis G.
, p. 8069 - 8073 (2013)
The pluses and minuses of mefloquine: A highly enantioselective catalytic borylative isomerization/aldehyde allylboration method for the stereoselective synthesis of the antimalarial drug mefloquine was optimized, thus leading to an efficient synthesis of all four mefloquine stereoisomers and analogues (see scheme). The absolute configuration of these potent compounds was determined for the first time by using chemical synthesis. Copyright
AZAINDOLE DERIVATIVE AND USE THEREOF AS FGFR AND C-MET INHIBITOR
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, (2021/05/29)
A series of pyrazolopymidine derivatives, and use thereof in the preparation of a medicament for treating disease associated with FGFR and c-Met. The pyrazolopymidine derivative is a compound represented by formula (I), a tautomer, or a pharmaceutically acceptable salt thereof.
Preparation method of N-substituted-tetrahydropyridine-3/4-boric acid/ester
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, (2020/04/22)
The invention discloses a preparation method of N-substituted tetrahydropyridine-3/4-boric acid/ester, and belongs to the technical field of organic boric acid chemistry. The method comprises the following steps: carrying out a reaction on pyridine-3/4-boric acid/ester and a halide to form a quaternary salt, and reducing the quaternary salt with sodium/potassium borohydride in an aprotic solvent to generate N-substituted-tetrahydropyridine-3/4-boric acid/ester. According to the method, easily-synthesized pyridine-3/4-boric acid/ester is used as a raw material, the product can be obtained through two continuous steps, and the reaction selectivity is high, so that the defect that palladium-catalyzed coupling or ultralow temperature is needed when substituted piperidone is adopted as a raw material is overcome, the method is verified on the hectogram scale, and a concise and efficient synthesis path is provided for preparation of the compound.
New synthesis method of N-substituted-1,2,5,6-tetrahydropyridine-4-boronic acid pinacol ester
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Paragraph 0022; 0024-0025, (2019/12/25)
The invention discloses a new synthesis method of N-substituted-1,2,5,6-tetrahydropyridine-4-boronic acid pinacol ester. The new synthesis method of the N-substituted-1,2,5,6-tetrahydropyridine-4-boronic acid pinacol ester comprises the following three reaction steps: firstly, performing reaction on 4-bromopyridine hydrochloride and clR1 to prepare 4-bromine-N-substituted-pyridine chloride; then preparing N-substituted-piperidine-4-alkenyl bromide through NaBH4 reduction; finally, preparing the target product N-substituted-1,2,5,6-tetrahydropyridine-4-boronic acid pinacol ester through a Grignard method and methoxy boric acid ester. The synthesis route has the advantages of high universality, cheap and easily available raw materials, mild reaction condition, few byproducts, high yield andthe like, and the product has high economic property and strong market competitiveness and is suitable for industrialized production. The formula is as shown in the description, wherein R1=-Boc;-Cbz;-Bz;-Bn;-Fmoc;-Me;-Et;-iPr;-Ph.
Novel synthesis method of N-Boc-1,2,5,6-tetrahydropyridine-4-boric acid pinacol ester
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, (2019/10/02)
The invention discloses a novel synthesis method of N-Boc-1,2,5,6-tetrahydropyridine-4-boric acid pinacol ester. The synthesis method comprises following three steps: taking 4-bromopyridine hydrochloride as the primary raw material, reacting 4-bromopyridine hydrochloride with tert-butyl chloroformate or di-tert-butyl bicarbonate to prepare 4-bromo-N-Boc-pyridine chloride; reducing 4-bromo-N-Boc-pyridine chloride by NaBH4 to prepare N-Boc piperidine-4-vinyl bromide; and finally, carrying out coupling reactions between N-Boc piperidine-4-vinyl bromide and bis(pinacolato) diboron to prepare the target product: N-Boc-1,2,5,6-tetrahydropyridine-4-boric acid pinacol ester. The synthesis route has the advantages of easily available raw materials, mild conditions, few byproducts, and high yield, and is suitable for industrial enlarged production.
Technological method for synthesizing N-substituted-1,2,5,6-tetrahydropyridine-4-boric acid ester
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Paragraph 0018, (2019/06/07)
The invention relates to an organic compound synthesis method, in particular to a technological method for synthesizing N-substituted-1,2,5,6-tetrahydropyridine-4-boric acid ester. The method comprises the step that N-substituted-1,2,5,6-tetrahydropyridine-4-halide serves as a raw material to react with bi-boric acid ester, cuprous halide or cuprous oxide, a ligand and organic base in a solvent, so that N-substituted-1,2,5,6-tetrahydropyridine-4-boric acid ester is obtained. The method is innovative, and easy and convenient to operate, the technological route is short, the cost is low, the product purity is high, the reaction conditions are mild, the situation that metal palladium coupling or a high-activity Grignard reagent and a low temperature condition are adopted in a traditional method is avoided, and the method has potential cost advantage, and is suitable for industrialized scale-up production.
Pyrrolopyrazole derivative and preparation method thereof, and applications of pyrrolopyrazole derivative in medicine
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, (2019/09/14)
The present invention relates to a pyrrolopyrazole derivative and a preparation method thereof, and applications of the pyrrolopyrazole derivative in medicine, particularly to a class of new pyrrolopyrazole derivatives represented by a general formula (I), and a preparation method thereof, and uses of the pyrrolopyrazole derivatives or pharmaceutical compositions containing the pyrrolopyrazole derivatives as treating agents, particularly as gastric acid secretion inhibitors and potassium ion competitive acid blockers (P-CABs) in biomedicine, wherein various substituents (R, R and R) and the groups (X, Y and Z) in the formula (I) are defined in the specification.
Tetrahydroisoquinoline amide compounds containing quaternary ammonium ion and pharmaceutical use thereof
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Paragraph 0333-0336, (2019/07/11)
The invention relates to tetrahydroisoquinoline amide compounds containing quaternary ammonium ion, a preparation method of the compounds, and a use of the compounds in the treatment or prevention ofthromboembolic diseases.
SUBSTITUTED TETRAHYDROPYRIDINE DERIVATIVES AS IDO-1 INHIBITORS AND USES THEREOF
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, (2018/11/21)
Compounds of formula I that modulate or inhibit the enzymatic activity of indoleamine 2,3-dioxygenase, pharmaceutical compositions including such compounds and methods of treating diseases, conditions or disorders utilizing such compounds and compositions.
Tetrahydroisoquinoline compound and its preparation method, pharmaceutical composition and use
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Paragraph 0110, (2018/03/24)
The invention relates to a tetrahydroisoquinoline compound and its preparation method, pharmaceutical composition and use. The tetrahydroisoquinoline compound is shown by the general formula (1). In the general formula (1), the symbols have the same definitions as in the specification.