新型N-苯基哌嗪喹啉类衍生物的设计与合成
[Abstract]:Heterocyclic compounds are a very important class of compounds, which play a very important role in the synthesis of organic drugs, mainly depending on their dicyclic and tricyclic derivatives have applied physiological activities in medicine and pesticides. Cyclic compounds, which contain both N and S elements. 1,5-benzothiaza and their derivatives are widely used because they have broad biological activities, such as anti-hypertension, anticonvulsant, anticancer, anti-HIV, anti-ulcer, antibacterial and so on. In addition, they can also be used as calcium ion antagonists and are many analgesics. For example, Diltiazem hydrochloride, a widely used clinical drug, contains heterocyclic structure. At present, the synthesis and research of 1,5-benzothiazole and its derivatives have become an important research hotspot of many pharmaceutical chemists.
Quinoline compounds are important pharmaceutical intermediates in the pharmaceutical industry. In recent years, many new drugs containing quinoline rings have been developed. Quinoline was originally obtained by distillation from quinine, an antimalarial drug. Quinoline is mainly used in the synthesis of antimalarial drugs, such as chloroquine phosphate, primary aminoquine phosphate and aminophenol quinoline. It can also be used to synthesize important local anesthetics, such as dibucaine hydrochloride, antipyretic and analgesic drugs, such as cinchofen and clotridine, as well as quinolidoform, chloroiodoquinoline, bisiodoquinoline, etc. Quinoline rings and other heterocyclic compounds can also be used to synthesize chlorphenamine and clotridine. Previous studies have shown that tetrad and quintuple heterocycles can be successfully constructed by 1,3-dipolar cycloaddition reaction. Considering the splicing principle of drug design, we introduced 1,5-benzothiazide into quinoline nucleus in order to obtain compounds with potential biological activity and provide a basis for the screening of organic drugs. Synthesis methods and lead compounds.
Our main work is to introduce N-phenylpiperazine as a substituent into quinoline heterocyclic molecules and synthesize a series of novel derivatives with potential biological activities by 1,3-dipolar cycloaddition reaction. A series of quinoline derivatives containing N-phenylpiperazine were successfully synthesized.
This thesis is divided into two parts:
The first part is the literature review.
In this part, the important synthetic methods, physiological and pharmacological activities of quinoline, 1,5-benzothiazole and 1,2,4-VA diazole are systematically reviewed, and the 1,5-benzothiazole derivatives and quinoline-containing 1,2,4-VA diazoline derivatives are also briefly introduced. Structural modification of cyclization.
The second part is the experimental part. The main tasks are as follows:
1, the synthesis and characterization of novel quinoline 1,5- benzoxazide substituted phenoxy piperazine derivatives
A series of 1,2,4-VA diazo 1,5-benzodiazo derivatives were synthesized by 1,3-dipolar cycloaddition of 1,5-benzothiazole derivatives with simple para-substituted chlorooximes.
2, synthesis and characterization of a new quinoline 1,2,4-VA two azoline derivative containing phenyl piperazine.
2-(4-phenylpiperazine-1-yl) -3-quinoline formaldehyde reacts with para-substituted aniline to obtain different imines. Then imines and simple para-substituted oximes react with 1,3-dipolar cycloaddition to obtain a series of quinoline-containing 1,2,4-VA diazoline derivatives.
3, synthesis and characterization of a new quinoline 1,3,4-VA two azoline derivative containing phenyl piperazine.
A series of new acylhydrazones were synthesized by the reaction of 2-(4-phenylpiperazine-1-yl) -3-quinoline formaldehyde with different substituted benzoylhydrazines. Then a series of new quinolino-containing 1,3,4-VA diazoline derivatives were obtained by oxidative ring-closure in acetic anhydride.
The structure of the product was confirmed by elemental analysis, MS, IR, 1H NMR and 13C NMR, and its spectral properties were analyzed and discussed.
【学位授予单位】:新疆大学
【学位级别】:硕士
【学位授予年份】:2014
【分类号】:O626
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