CAS: 31036-80-3; 2-(1-(2,6-Dichlorophenoxy)Ethyl)-4,5-Dihydro-1H-Imidazole

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上下游产品

2-(2,6-dichlorophenoxy)-propionitrile ethylenediamine 2,6-Dichlorophenol (-)-Lofexidine (+)-Lofexidine lofexidine hydr°Chloride

合成工艺路线路线简述

    📜2-(2,6-Dichlorophenoxy)-Propionitrile置于盐酸体系中,用 乙醇,氯仿 用作溶剂,化学反应生成洛非西定
    参考文献:(+)-2-[1-(2,6-Dichlorophenoxy)-Ethyl]-1,3-Diazacyclopent-2-Ene And The
    标题:(+)-2-[1-(2,6-Dichlorophenoxy)-Ethyl]-1,3-Diazacyclopent-2-Ene And The
    摘要:本发明涉及(+)-2-[1-(2,6-二氯苯氧基)-乙基]-1,3-二氮杂环戊-2-烯及其药学上可接受的酸盐,以及使用这些化合物治疗人类神经紊乱,特别是偏头痛的方法.

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    专利信息


    专利号:US-10925977-B2
    优先权日:2006-10-05
    标 题 :Efficient synthesis of chelators for nuclear imaging and radiotherapy: compositions and applications
    发明人:YANG DAVID J; YU DONGFANG; THOMPSON ANDREW S
    权利人:YANG DAVID J; YU DONGFANG; THOMPSON ANDREW S; CEIL POINT LLC; UNIV TEXAS
    摘要:Novel methods of synthesis of chelator-targeting ligand conjugates, compositions comprising such conjugates, and therapeutic and diagnostic applications of such conjugates are disclosed. The compositions include chelator-targeting ligand conjugates optionally chelated to one or more metal ions. Methods of synthesizing these compositions in high purity are also presented. Also disclosed are methods of imaging, treating and diagnosing disease in a subject using these novel compositions, such as methods of imaging a tumor within a subject and methods of diagnosing myocardial ischemia.

    专利号:US-12351558-B2
    优先权日:2020-04-17
    标题 :Process for the synthesis of lofexidine
    发明人:NG CHOI I-TENG MONTSERRAT
    权利人:MEDICHEM SA
    摘要:The present invention relates to an improved process for the synthesis of lofexidine, or a pharmaceutically acceptable salt thereof, using an aluminium alkoxide as Lewis acid.

    专利号:US-12264143-B2
    优先权日:2020-12-17
    标 题:Synthesis of cannabinoids and cannabinoid precursors, and related compounds, formulations, and methods of use
    发明人:SAMMIS GLENN M; ROGGEN MARKUS
    权利人:NALU BIO INC
    摘要:Methods are provided for the synthesis of cannabinoids, including cannabidiol (CBD), cannabinol (CBN), cannabichromene (CBC), cannabidiolic acid (CBDA), cannabigerol (CBG), cannabigerolic acid (CBGA), cannabidivarin (CBDV), cannabidibutol (CBD-C4), dihydrocannabidiol (DCBD), tetrahydrocannabivarin (THCV), analogs thereof, and precursors to the foregoing. One method employs phloroglucinol or a phloroglucinol analog as a starting material. The syntheses are stereospecific, efficient, selective, and cost-effective, with little or no potential for generation of THC ((−)-trans-Δ9-tetrahydro-cannabinol) or any other psychoactive side product. Telescoped syntheses are also provided, as are new cannabinoids, pharmaceutical formulations, and methods of use.

    专利号:US-11459303-B2
    优先权日:2019-06-21
    标题 :Process for the synthesis of lofexidine
    发明人:DONNOLA MONICA; BAROZZA ALESSANDRO; ROLETTO JACOPO; PAISSONI PAOLO
    权利人:PROCOS SPA
    摘要:Disclosed is a process for the synthesis of lofexidine of formula (I) and the hydrochloride salt thereof (II), from ethyl 2-(2,6-dichlorophenoxy)propionate (III) and ethylenediamine in the presence of tetravalent titanium alkoxides, preferably titanium isopropoxide, in an apolar solvent such as toluene. A further object of the present invention is a process for the preparation of the intermediate ethyl 2-(2,6-dichlorophenoxy)propionate (III) from 2,6-dichlorophenol and ethyl 2-chloropropionate in the presence of a polar aprotic solvent and an alkali or alkaline earth carbonate salt, preferably potassium carbonate. Both processes are more cost-effective and more easily industrially scalable than the known procedures, thus enabling the active ingredient to be obtained with high yields at a limited cost.

    专利号:US-8101779-B2
    优先权日:2008-10-06
    标题 :Enantioselective synthesis of (+) and (–)-2-[1-(2,6-dichlorophenoxy)-ethyl]-1,3-diazacyclopent-2-ene
    发明人:CROOKS PETER A; VARTAK ASHISH PRAMOD
    权利人:CROOKS PETER A; VARTAK ASHISH PRAMOD; UNIV KENTUCKY RES FOUND
    摘要:Methods for the enantioselective synthesis of (+) and (−) lofexidine or 2-[1-(2,6)-dichlorophenoxy)-ethyl]-1,3-diazacyclopent-2-ene involve converting (+) or (−) 1-methyl-1-[2,6-dichlorophenoxy]ethanamide to an (+) or (−) imino-ether intermediate by electrophilic attack of the amide oxygen by a trimethoxonium ion and, without isolation, converting the (+) or (−) imino-ether intermediate to (+) or (−) 2-[1-(2,6-dichlorophenoxy)-ethyl]1,3-diazacyclopent-2-ene by adding ethylene diamine; and optionally converting the (+) or (−) 2-[1-(2,6-dichlorophenoxy)-ethyl]1,3-diazacyclopent-2-ene into a pharmaceutically acceptable acid addition salt thereof.

    专利号:US-2012282255-A1
    优先权日:2011-04-07
    标题 :Methods and compositions for the treatment of alcoholism and alcohol dependence
    发明人:PLUCINSKI GREG
    权利人:PLUCINSKI GREG
    摘要:The present invention provides for compositions and methods for treating or preventing addictive and compulsive diseases and disorders, particular alcohol-related diseases and disorders, disclosed herein. The GLP activators of the present invention are effective against various alcohol and drug dependency diseases. In accordance with the invention, the present compositions and methods can be used to intercede upstream or downstream in the signal transduction cascade involved in GLP action to treat various alcohol and drug dependency diseases. In one embodiment, the synthesis or release of endogenous GLP can be stimulated. In another embodiment, the endogenous synthesis or release of another molecule active in the cascade downstream from GLP, (e.g., a molecule produced in response to GLP binding to a receptor), can be stimulated. Accordingly, the methods and compositions of the invention are useful for preventing, treating, diagnosing, or monitoring the progression various alcohol and drug dependency diseases disclosed herein.

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    主要参考文献


    1: Kuszmaul AK, Palmer EC, Frederick EK. Lofexidine versus clonidine for mitigation of opioid withdrawal symptoms: A systematic review. J Am Pharm Assoc (2003). 2019 Nov 29. pii: S1544-3191(19)30453-4. doi: 10.1016/j.japh.2019.10.004. [Epub ahead of print] Review. doi: 10.7759/cureus.4827. Review.
    3: Pergolizzi JV Jr, Annabi H, Gharibo C, LeQuang JA. The Role of Lofexidine in Management of Opioid Withdrawal. Pain Ther. 2019 Jun;8(1):67-78. doi: 10.1007/s40122-018-0108-7. Epub 2018 Dec 18. Review.
    4: Drugs and Lactation Database (LactMed) [Internet]. Bethesda (MD): National Library of Medicine (US); 2006-. Available from http://www.ncbi.nlm.nih.gov/books/NBK513054/ doi: 10.1345/aph.1M347. Epub 2009 Dec 29. Review. Review. Review.

    合成参考文献


    参考文献:10.1016/s0740-5472(01)00178-7
    摘要:Gerra G, Zaimovic A, Giusti F, Di Gennaro C, Zambelli U, Gardini S, Delsignore R. Lofexidine versus clonidine in rapid opiate detoxification. Journal of Substance Abuse Treatment. 2001 Jul;21(1):11–7. doi: 10.1016/s0740-5472(01)00178-7.
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