专利号:US-7247752-B2 优先权日:2004-10-01 标 题 :Methods for the synthesis of astaxanthin 发明人:LOCKWOOD SAMUEL F; TANG PENG CHO; NADOLSKI GEOFF; JACKSON HENRY L; FANG ZHIQIANG; DU YISHU; YANG MIN; GEISS WILLIAM; WILLIAMS RICHARD; BURDICK DAVID 权利人:CARDAX PHARMACEUTICALS INC 摘要:A method used for synthesizing intermediates for use in the synthesis of carotenoids and carotenoid analogs, and/or carotenoid derivatives. In some embodiments, the invention includes methods for synthesizing optically active intermediates useful for the synthesis of optically active carotenoids. Synthesis of optically active carotenoids, in one embodiment, may be accomplished by forming an optically active dihydroxy intermediate from ketoisopherone. The optically active dihydroxy intermediate may be converted into optically active astaxanthin derivatives.
专利号:US-2008032964-A1 优先权日:2006-04-10 标题:Process for the synthesis of azetidinone 发明人:KANSAL VINOD K; AHMAD SUHAIL; MARIAPPAN SHANMUGAVEL; TYAGI BHUPENDRA; PERLMAN NURIT; LE PAIH JACQUES; ZANOTTI-GEROSA ANTONIO 权利人:KANSAL VINOD K; AHMAD SUHAIL; MARIAPPAN SHANMUGAVEL; TYAGI BHUPENDRA; PERLMAN NURIT; LE PAIH JACQUES; ZANOTTI-GEROSA ANTONIO 摘要:Provided are intermediates useful for the synthesis of hydroxyl-alkyl substituted azetidinones, processes of their preparation, and processes for the synthesis of certain hydroxyl-alkyl substituted azetidinones. Also provided are processes for the synthesis of 1-(4-fluorophenyl)-3(R)-[3-(4-fluorophenyl)-3(S)-hydroxypropyl]-4(S)-(4-hydroxyphenyl)-2-azetidinone, or ezetimibe.
专利号:WO-2024153752-A1 优先权日:2023-01-20 标 题 :Stereoselective synthesis of intermediates and synthesis of quinagolids 发明人:RYBERG PER; PINESCHI MAURO; COMPARINI LUCREZIA 权利人:FERRING BV 摘要:Disclosed is a method for preparing compounds with improved stereoselectivities. The described compounds are useful intermediates and may find particular application in the synthesis of compounds containing an octahydrobenzoquinoline moiety (e.g. an octahydrobenzo[g]quinoline moiety), such as quinagolide and its derivatives. Also disclosed is a method for stereoselectively (e.g. enantioselectively) preparing an intermediate used in the existing manufacturing process for the synthesis of quinagolide this intermediate also finding utility in the synthesis of other compounds containing an octahydrobenzo[g]quinoline moiety, in particular those having a substituent at the 3- position on the octahydrobenzo[g]quinoline.
专利号:EP-0596485-B1 优先权日:1992-11-05 标题 :Electrochemical process for preparing alcoholates of alkaline metal and use thereof for regenaration of the catalyst in the synthesis of methylformat 发明人:SOBOTTA GEORG DR-ING; PAZDERSKI JURI ANTONOWITSCH PR; SKATSCHKO WLADIMIR PETROWITSCH; LEZJUK WASSILI WLADIMIROWITSCH; TAGAJEW OLEG ALEXEJEWITSCH DR 权利人:SALZGITTER ANLAGENBAU; SYNTHEZ BNII 摘要:The invention relates to a process for the electrochemical synthesis of alkali metal alcoholates (alkoxides) and/or for the regeneration of the catalyst from methyl formate synthesis from alcoholic solutions of salts of alkali metals in an electrolysis apparatus with an ion-selective membrane. The electrolysis is carried out in the presence of a defined quantity of a potassium salt or sodium salt of a perfluoroalkanesulphonic acid accompanied by the use of non-oxidisable anode material and with a membrane based on a sulphonated styrene-divinylbenzene copolymer. The process enables an increase in the selectivity of the procedure and a continuous synthesis.
专利号:US-9994526-B2 优先权日:2011-04-04 标 题 :Process intermediates and methods for the preparation of process intermediates for the synthesis of argatroban monohydrate 发明人:STIVANELLO MARIANO; HUBER FLORIAN ANTON MARTIN; RICCI ANTONIO 权利人:LUNDBECK PHARMACEUTICALS ITALY S P A 摘要:Methods are provided for the synthesis of key intermediates for the synthesis of Argatroban monohydrate, ethyl (2R,4R)-1-[(2S)-2-amino-5-[[imino(nitroamino)methyl]amino]-1-oxopentyl]-4-methylpiperidine-2-carboxylate compounded with HCl. Such intermediates are also provided.
专利号:US-2016200665-A1 优先权日:2013-08-21 标 题:Synthesis of biphenylalaninol via novel intermediates 发明人:ZIMMERMANN AXEL; HERMSEN PETRUS JOHANNES; HANBAUER MARTIN HELMUT FRIEDRICH 权利人:DPX HOLDINGS BV 摘要:The invention relates to a novel synthesis route towards R-biphenylalaninol and to the intermediates applied in this synthesis route. The process according to the invention and the intermediate compounds are useful in the synthesis of pharmaceutically active compounds.
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