恩替卡韋的合成及其質(zhì)量評(píng)價(jià)
[Abstract]:Enticavir was developed by Bristol-Myers Squibb in the 1990s. It was originally designed to treat herpes simplex virus (HSV) infection by using enecavir as a nucleosides analogues of 2-pentacyclodeoxyguanine, which was developed in the 1990s by Bumai-Pishibao (Bumai-Pishibao) Company of the United States. The original purpose of Entekawi is to treat herpes simplex virus infection. It was later found that it had strong anti-HBV ability and relatively low toxicity, so it was listed as a drug for the treatment of chronic hepatitis B. The purpose of this paper is to improve the existing Entekawi synthesis methods, to study the synthesis process, to find new synthesis conditions suitable for industrial production, and to obtain low cost and high stability entecavir raw materials. It creates favorable conditions for the next step of the study of entecavir preparation and produces cheaper and more effective drugs for the treatment of chronic hepatitis B. First of all, the existing synthetic ways of entecavir are reviewed. on the basis of the existing literature reports, for the purpose of industrial production, the products which are easy to obtain are environmentally friendly and low toxic to human body are selected as the starting materials. The development conditions are mild and easy to industrial production and synthesis route, with 偽-piperene, borane dimethyl sulfide complex and cyclopentadiene sodium as starting materials. (1s-trans)-2-[(p-methylbenzoxyl) methyl]-3-cyclopentene-1-ol was obtained by condensation reaction. (1S-trans)-2-[(p-methylbenzoxyl) methyl]-3, 5-cyclopentadiene-1-alcohol is cyclooxidized to (1S-trans)-2-[(p-methyl)-2-[(p-methyl)-2-alcohol under the action of vanadium acetylacetone oxide and tert-butylhydrogen peroxide Benzoxyl) methyl]-oxabicyclo [3.1.0]-cyclopentane-1-alcohol. After the hydroxyl group was protected by methyl benzylgroup, it was coupled with 6-benzyloxyguanine, and then reacted with 6-benzyloxyguanine to give entecavir by oxidation, methylene and deprotection. The obtained products were characterized by elemental analysis, ultraviolet spectroscopy, infrared spectroscopy, nuclear magnetic resonance spectroscopy, mass spectrometry, differential thermal analysis and thermogravimetric analysis. Secondly, the quality standard of this product is established by referring to the standard of import registration (JX20050113) and the requirements of Chinese Pharmacopoeia. HPLC retention time and infrared absorption spectroscopy were used to identify the samples, the properties, specific curl and moisture of the samples were determined, and the residual solvents were determined by gas chromatography combined with the production process. The content of the sample was determined by high performance liquid chromatography (HPLC) and the related substances were examined. Finally, according to the Technical requirements of Physicochemical and quality Standard Research of New drugs (Chemicals) and Appendix XIX X C of Chinese Pharmacopoeia, "guiding principles of Drug Stability Test, preparation Stability Test", the light of this product is carried out. The influencing factors test of high temperature and high humidity and the long-term accelerated stability test show that the product has the same stability as the original Entekawi.
【學(xué)位授予單位】:浙江大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2016
【分類號(hào)】:R914.5
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