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    • 1. 发明授权
    • Cyclic bis-benzimidazole ligands and metal complexes thereof
    • 环状双苯并咪唑配体及其金属络合物
    • US06376664B1
    • 2002-04-23
    • US09528273
    • 2000-03-17
    • Michael K. ChanWai H. KwokHuichang ZhangMaosheng Duan
    • Michael K. ChanWai H. KwokHuichang ZhangMaosheng Duan
    • C07D22500
    • C07D487/18
    • Cyclic bis benzimidazole ligands of the following formula are formed by contacting a (2-aminophenyl)-benzimidazole-4-carboxaldehyde ethylene acetal or a (2-nitrophenyl)-benzimidazole-4-benzaldehyde with an acid optionally in the presence of a metal or a metal salt. wherein R1 and R2 may be the same or different and are selected from H, an alkyl having 1 to 10 carbon atoms, a benzyl group, a substituted 2-ethylphenyl group, a carbonyl group, a phenyl substituent, a tosyl group, and an alkylsulfonate group; R3 and R4 may be the same or different and are selected from H, methyl, and ethyl; and R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, and R18 may be the same or different and are selected from H, alkyl having 1 to 10 carbon atoms, fluoride, chloride, bromide, iodide, nitro, amino, a carboxylate, an ester, and a phenyl group.
    • 通过使(2-氨基苯基) - 苯并咪唑-4-甲醛乙醛缩醛或(2-硝基苯基) - 苯并咪唑-4-苯甲醛与酸任选地在金属存在下接触而形成下式的环状双苯并咪唑配体,或 其中R1和R2可以相同或不同,选自H,具有1-10个碳原子的烷基,苄基,取代的2-乙基苯基,羰基,苯基取代基,甲苯磺酰基 和烷基磺酸酯基; R 3和R 4可以相同或不同,并且选自H,甲基和乙基; 和R 5,R 6,R 7,R 8,R 9,R 10,R 11,R 12,R 13,R 14,R 15,R 16,R 17和R 18可以相同或不同,选自H,具有1-10个碳原子的烷基, 氯化物,溴化物,碘化物,硝基,氨基,羧酸酯,酯和苯基。
    • 9. 发明授权
    • Process for the preparation of endo-nortropine using 8-benzyl-nortropan-3-one perchlorate as the intermediate, as well as the latter salt
    • 使用8-苄基 - 异丙肾上腺素-3-酮高氯酸盐作为中间体,以及后者的盐制备内切托品的方法
    • US06191272B1
    • 2001-02-20
    • US09487051
    • 2000-01-19
    • Rolf SachseAlbert Schaupp
    • Rolf SachseAlbert Schaupp
    • C07D22500
    • C07D451/06
    • The invention relates to a process for the preparation of endo-nortropine using 8-benzyl-nortropan-3-one perchlorate, as well as the latter product. Endo-nortropine is the key product for the production of important azonia-spironortropanol esters, which are used as pharmaceuticals, particularly spasmolytics. There are three different synthesis methods for the preparation of said intermediate, which lead to different disadvantages. These problems are obviated by the present invention through the two-stage treatment of 8-benzyl-nortropan-3-one perchlorate with catalytically activated hydrogen, the starting product initially being prehydrogenated in aqueous suspension and at atmospheric pressure and ambient pressure with a palladium catalyst, at the end of the reaction the catalyst is recovered by filtration, the filtrate is passed over an anion exchanger and the now alkaline reacting solution is rendered turbulent at 1000 to 1500 r.p.m. with hydrogen activated by Raney nickel at atmospheric pressure and ambient temperature. This new synthesis method using the novel perchlorate salt as an intermediate is extremely economic and environmentally friendly and supplies substantially completely stereoselectively the desired endo-form of nortropine.
    • 本发明涉及使用8-苄基 - 异丙肾上腺素-3-酮高氯酸盐以及后一种产品制备内给妥他汀的方法。 内啡诺是生产重要的氮氧化物 - 螺螺甾醇酯的关键产物,其用作药物,特别是解痉药。 制备所述中间体有三种不同的合成方法,这导致不同的缺点。 通过用催化活化氢对8-苄基 - 异丙醇-3-酮高氯酸盐进行两级处理,本发明消除了这些问题,起始产物最初在含水悬浮液中预先氢化,并在大气压和环境压力下用钯催化剂 在反应结束时,通过过滤回收催化剂,将滤液通过阴离子交换剂,并将现在的碱性反应溶液在1000至1500rpm下变成湍流 在大气压和环境温度下由阮内镍活化的氢。 使用新型高氯酸盐作为中间体的这种新的合成方法是非常经济和环境友好的,并且基本上完全立体选择性地提供了所需的内质酸内生型。