专利号:US-5668285-A 优先权日:1986-10-31 标 题 :Total synthesis of northebaine, normophine, noroxymorphone enantiomers and derivatives via N-Nor intermediates 发明人:RICE KENNER CRALLE; NEWMAN AMY HAUCK 权利人:US HEALTH 摘要:The invention involves a method of making key intermediates useful in the synthesis of many opiate narcotics and antagonists and agonists; and the non-opiate enantiomers thereof which have potent antitussive properties. The synthesis starts from either the natural or unnatural enantiomer of nordihydrocodeinone and produces 8, 14-dihydronorthebaine, the diketal of 7-bromonordihydrocodeinone, northebaine, norcodeinone diketal and 14-hydroxynorcodeinone intermediates without the necessity of leaving the N-nor structure. The syntheses have fewer steps than previous methods, and also have high yields.
专利号:US-10927122-B2 优先权日:2017-12-05 标 题:Synthesis of noroxymorphone 发明人:SANTANDREA ERNESTO; WEBER BEAT THEODOR; BOUDIER ANDREAS; GEISELER OLIVER; JEGER PATRICK 权利人:SIEGFRIED AG 摘要:The present invention relates to the improved synthesis of noroxymorphone of formula (III). Particularly, the invention shows a way how to reduce the impurity level in the product avoiding lengthy purification steps.
专利号:US-8461384-B2 优先权日:2006-12-11 标 题 :Preparation of amides from an acid and amine for intermediates in the synthesis of morphinans 发明人:WANG PETER X; MOSER FRANK W; GROTE CHRISTOPHER W; CANTRELL GARY L 权利人:WANG PETER X; MOSER FRANK W; GROTE CHRISTOPHER W; CANTRELL GARY L; MALLINCKRODT LLC 摘要:The present invention is directed to processes for the synthesis of morphinans. In particular, a process for coupling a carboxylic acid compound with an amine compound to form an amide product that can then be isolated or the crude amide product can be cyclized to form a 3,4-dihydroisoquinoline. In one embodiment, the carboxylic acid contains a phenol moiety protected with a labile protecting group. The protected phenol reduces reaction times, simplifies work-up of the product, and reduces the amount of cyclizing agent, POCl 3 that is necessary to form the 3,4-dihydroisoquinoline.
专利号:EP-0496830-B1 优先权日:1989-10-16 标 题 :Total synthesis of northebaine, normorphine, noroxymorphone enantiomers and derivatives via n-nor intermediates 发明人:RICE KENNER CRALLE; NEWMAN AMY HAUCK 权利人:US HEALTH 摘要:Families of antagonist-agonists and opiate narcotics are produced from norhydrocodeinone. In a preferred embodiment, norhydrocodeinone is refluxed with sulfosalicyclic dimethylketal and delta-6-enol ether derivatives and is then converted entirely to the ether by the addition of dry tetrahydrofuran simultaneously with the removal of the thus produced ether. The ether is then reacted with methanesulfonic acid and N-bromoacetamide to form the hydrobromide salt of the 7-bromodimethylketal derivative. From this derivative, a variety of products can be derived, including the novel further intermediate 14 hydroxynorcodeinone. The present invention enables derivation using a starting material which, unlike the starting materials of prior art processes, is available in the natural (-) or synthetic (+) form. Thus, the method of the present invention provides the only known route for the synthesis of (+) forms of various derivatives and intermediates, such as (+)-7-bromo-dimethylketal nordihydrocodeinone.
专利号:US-6013796-A 优先权日:1996-07-26 标 题:Preparation of naltrexone from codeine and 3-benzylmorphine 发明人:HUANG BAO-SHAN; LU YANSONG; JI BEN-YI; CHRISTODOULOU ARIS P 权利人:PENICK CORP 摘要:For the synthesis of 3-methylnaltrexone from codeine in this invention, codeine is converted to 6-acetylcodeine, which is N-demethylated to 6-acetylcodeine hydrochloride, followed by alkylating the nitrogen to form 17-cyclopropylmethylnorcodeine. The latter is oxidized to 17-cyclopropylmethylnorcodeinone. For the synthesis of naltrexone from morphine in this invention, morphine is converted to 3-benzylnormorphine as described above in the synthesis of noroxymorphone. 3-Benzylnormorphine is reacted with cyclopropylmethyl halide to produce 3-benzyl-17cyclopropylmethylnormorphine, a novel compound, which is oxidized to 3-benzyl-17-cyclopropylmethyl-normorphinone, a novel compound, by Swern oxidation.
专利号:US-2023357257-A1 优先权日:2020-12-28 标 题 :Novel process for the synthesis of noroxymorphone from morphine 发明人:GORBACHEV DMITRY; LAM HON WAI; SAXENA AAKARSH; SAXENA NAVIN SATYAPAL 权利人:NAVIN SAXENA RESEARCH & TECH PVT LTD 摘要:The present invention relates to a novel, efficient, pot- and atom-economical, and industrially applicable process for converting morphine to noroxymorphone using reagents and solvents of lesser toxicity and lower cost with respect to those used in the prior art.
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