专利号:US-2024409495-A1 优先权日:2021-10-20 标 题 :Process for the preparation of 2,7-dihydroxy-9-fluorenone useful for the synthesis of tilorone and its salts 发明人:JAISANKAR PARASURAMAN; DEB INDUBHUSAN; BHATTACHARJEE PINAKI 权利人:COUNCIL SCIENT IND RES 摘要:Methods involving preparation of building blocks of 2,7-dihydroxy-9-fluorenone toward the synthesis of tilorone dihydrochloride salt and other salts (bromide, iodide, fluoride, citrate, oxalate, maleate, phosphate, tartrate, triflate, trifluoroacetate, tetrafluoroborate) of tilorone, and an efficient, safe, cost effective method for the preparation of 2,7-bis-[2-(diethylamino)ethoxy]-fluorenone-9 and its various salts are developed. The methods involve oxygenation of fluorene, nitration of fluorenone, followed by reduction and diazotization toward the formation of 2,7-dihydroxy-9-fluorenone, which is the key intermediate for the formation of 2,7-bis-[2-(diethylamino)ethoxy]-9-fluorenone-dihydrochloride (Tilorone dihydrochloride) and other tilorone salts. The synthesis method has relatively simple operation, mild reaction conditions, high yield, and simple process with yields of 80-97%. Subsequent product purification of this method uses filtration and crystallization methods, avoiding the existing methods of column chromatography. Therefore, the research of its synthetic method being with a wide range of applications from the drug development and material synthesis point of view.
专利号:WO-2025076406-A1 优先权日:2023-10-05 标题:Synthesis and evaluation of 9-aminoacridines with sars-cov-2 antiviral activity 发明人:JONES THANE; LANE THOMAS; MAKAROV VADIM; EKLINS SEAN 权利人:COLLABORATIONS PHARMACEUTICALS INC 摘要:The synthesis and characterization of a series of derivatives and analogs based on the 9-aminoacridine scaffold shared by antimalarial drugs quinacrine and pyronaridine are described. Also described is the structure-activity relationship of these compounds against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes the coronavirus disease of 2019 (COVID-19). Several compounds displayed potent in vitro activity, with 50% inhibitory concentrations below 1 micromolar.
专利号:US-2009012088-A1 优先权日:2005-07-26 标 题:Compounds for the Treatment of Neurodegeneration and Stroke 发明人:HERGENROTHER PAUL J; PUTT KARSON S; LIU XIANJUN 权利人:HERGENROTHER PAUL J; PUTT KARSON S; LIU XIANJUN 摘要:Compounds and related methods for synthesis, and the use of compounds for the treatment of neurodegenerative diseases are disclosed. Compounds are disclosed in connection with PARG and/or PARP inhibition. Therapeutic applications are relevant for preventing or inhibiting neurological cell death for a variety of neurodegenerative conditions including Parkinson's disease, ischemia, and stroke. Also disclosed is a high-throughput screen for identifying compounds capable of inhibiting PARG and/or PARP.
专利号:WO-2023067624-A1 优先权日:2021-10-20 标 题 :A process for the preparation of 2,7-dihydroxy-9-fluorenone useful for the synthesis of tilorone and its salts
专利号:WO-2009056955-A1 优先权日:2007-10-30 标题 :Amine-bearing phospholipids (abps), their synthesis and use 发明人:ZUMBUEHL ANDREAS 权利人:UNIV BASEL; ZUMBUEHL ANDREAS 摘要:Disclosed herein are amine-bearing phospholipids (ABP). The ABPs display many properties and functionalities of naturally occurring phospholipids, but also new properties and functionalities, such as the ability to polymerize while maintaining structural integrity, that may supplement or expand the functionalities of naturally occurring phospholipids.
专利号:CN-118175999-A 优先权日:2021-10-20 标题 :Process for the preparation of 2, 7-dihydroxy-9-fluorenone useful for the synthesis of telulone and its salts
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合成参考文献
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