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公开(公告)号:US06906210B2
公开(公告)日:2005-06-14
申请号:US10343034
申请日:2001-07-24
IPC分类号: A61K31/20 , A61P3/10 , C07B53/00 , C07C303/38 , C07C309/66 , C07C319/08 , C07C319/18 , C07C319/28 , C07C321/04 , C07C323/52 , C07D339/04 , C07B45/00
CPC分类号: C07D339/04 , C07C319/18 , C07C321/04 , C07C323/52
摘要: Processes for the preparation of R-lipoic acid or S-lipoic acid comprising a process step selected from a) distillation of dihydrolipoic acid, b) reaction of or its stereoisomer, where Ms is SO2—R′ and R and R′ independently of one another is [sic] C1-C6-alkyl, C3-C8-cycloalkyl, C3-C8-cycloalkylalkyl, aryl or aralkyl, with sodium sulfide and sulfur in ethanol and reaction with a complex hydride, (c) the extraction of a protic solution of R-dihydrolipoic acid or S-dihydrolipoic acid with organic solvents at a pH from 9 to 10, or (d) the extraction of R-dihydrolipoic acid or S-dihydrolipoic acid with organic solvents from a protic solution at a pH of 4 to 5, or a combination of one or more of steps (a) to (d), and processes for the preparation of dihydrolipoic acid and the compound 1,6,8 [lacuna] octanetriol.
摘要翻译: 用于制备R-硫辛酸或S-硫辛酸的方法包括选自以下的方法步骤:a)蒸馏二氢硫辛酸,b)其反应或其立体异构体,其中Ms为SO 2 -R' 且R和R'彼此独立地是C 1 -C 6 - C 6 - 烷基,C 3 -C 8 环烷基,C 3 -C 8 - 环烷基烷基,芳基或芳烷基,与硫化钠和硫在乙醇中并与络合氢化物反应,(c) 在9至10的pH下用有机溶剂萃取R-二氢硫辛酸或S-二氢硫辛酸的质子溶液,或(d)用有机溶剂从质子溶液中萃取R-二氢硫辛酸或S-二氢硫辛酸 pH为4至5,或步骤(a)至(d)中的一种或多种的组合,以及制备二氢硫辛酸和化合物1,6,8 [空白]辛三醇的方法。
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公开(公告)号:US07109362B2
公开(公告)日:2006-09-19
申请号:US10432455
申请日:2001-11-29
IPC分类号: C07B45/00 , A61K31/095 , C07D339/04
CPC分类号: C07D339/04
摘要: The present invention relates to a process for the preparation of R- and S-lipoic acid and R- and S-dihydrolipoic acid comprising(a) reaction of where MS is SO2—R′ and R and R′ independently of one another are C1–C6-alkyl, C3–C8-cycloalkyl, C3–C8-cycloalkylalkyl, aryl or aralkyl, with sodium sulfide and sulfur in methanol. The invention especially relates to processes for preparing pure R- or S-dihydrolipoic acid, which is either used directly or processed further to give R- and S-lipoic acid. The process also serves for the production of pharmaceuticals. The present invention further relates to a solution of sodium sulfide trihydrate and sulfur in methanol, the sulfur being present in a molar excess over the sodium sulfide trihydrate, and a kit which comprises the solution according to the invention.
摘要翻译: 本发明涉及制备R-和S-硫辛酸和R-和S-二氢硫辛酸的方法,其包括(a)其中MS为SO 2 -R'和R和 R'彼此独立地是C 1 -C 6 - 烷基,C 3 -C 8 - 环烷基 C 3 -C 8 - 环烷基烷基,芳基或芳烷基,与硫化钠和硫在甲醇中反应。 本发明特别涉及制备纯R-或S-二氢硫辛酸的方法,其可直接使用或进一步加工得到R-和S-硫辛酸。 该方法还用于生产药物。 本发明还涉及硫化钠三水合物和硫在甲醇中的溶液,所述硫以超过硫化钠三水合物的摩尔量存在,以及包含根据本发明的溶液的试剂盒。
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公开(公告)号:US06620964B2
公开(公告)日:2003-09-16
申请号:US10307333
申请日:2002-12-02
IPC分类号: C07C6966
CPC分类号: C07D339/04 , C07C67/31 , C07C69/675
摘要: A description is given of a process for preparing dihydroxycarboxylic esters and of an overall process for preparing R-(+)-&agr;-lipoic acid.
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公开(公告)号:US20050014959A1
公开(公告)日:2005-01-20
申请号:US10495427
申请日:2002-12-05
申请人: Martin Klatt , Markus Niebel
发明人: Martin Klatt , Markus Niebel
IPC分类号: C07B53/00 , C07B61/00 , C07C67/31 , C07C69/675 , C07D339/04 , C07C69/66 , C07D307/02
CPC分类号: C07D339/04 , C07B2200/07 , C07C67/31 , C07C69/675
摘要: A description is given of a process for preparing dihydroxycarboxylic esters and of an overall process for preparing R-(+)-α-lipoic acid.
摘要翻译: 给出了制备二羟基羧酸酯的方法和制备R - (+) - α-硫辛酸的总体方法的描述。
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公开(公告)号:US06441024B1
公开(公告)日:2002-08-27
申请号:US09743920
申请日:2001-01-17
申请人: Martin Jochen Klatt , Markus Niebel , Joachim Paust , Jens Rieger
发明人: Martin Jochen Klatt , Markus Niebel , Joachim Paust , Jens Rieger
IPC分类号: A61K31385
CPC分类号: C07D339/04
摘要: In the 2 &THgr; diffractogram of an enantiomerically pure crystalline (R)- or (S)-lipoic acid, the most intense reflection line in the range from 13° to 30° is that at 2 &THgr;=23°.
摘要翻译: 在2&THgr 对映体纯的结晶(R) - 或(S) - 硫辛酸的衍射图,在13°至30°范围内最强反射线为2°时= 23°。
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公开(公告)号:US20050101669A1
公开(公告)日:2005-05-12
申请号:US10432455
申请日:2001-11-29
申请人: Martin Klatt , Markus Niebel , Joachim Paust
发明人: Martin Klatt , Markus Niebel , Joachim Paust
IPC分类号: C07D339/04 , A61K31/20
CPC分类号: C07D339/04
摘要: The present invention relates to a process for the preparation of R— and S-lipoic acid and R— and S-dihydrolipoic acid comprising (a) reaction of where MS is SO2—R′ and R and R′ independently of one another are C1-C6-alkyl, C3-C8-cycloalkyl, C3-C8-cycloalkylalkyl, aryl or aralkyl, with sodium sulfide and sulfur in methanol. The invention especially relates to processes for preparing pure R— or S-dihydrolipoic acid, which is either used directly or processed further to give R— and S-lipoic acid. The process also serves for the production of pharmaceuticals. The present invention further relates to a solution of sodium sulfide trihydrate and sulfur in methanol, the sulfur being present in a molar excess over the sodium sulfide trihydrate, and a kit which comprises the solution according to the invention.
摘要翻译: 本发明涉及制备R-和S-硫辛酸和R-和S-二氢硫辛酸的方法,其包括(a)其中MS为SO 2 -R'和R和 R'彼此独立地是C 1 -C 6 - 烷基,C 3 -C 8 - 环烷基 C 3 -C 8 - 环烷基烷基,芳基或芳烷基,与硫化钠和硫在甲醇中反应。 本发明特别涉及制备纯R-或S-二氢硫辛酸的方法,其可直接使用或进一步加工得到R-和S-硫辛酸。 该方法还用于生产药物。 本发明还涉及硫化钠三水合物和硫在甲醇中的溶液,所述硫以超过硫化钠三水合物的摩尔量存在,以及包含根据本发明的溶液的试剂盒。
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