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    • 1. 发明申请
    • Process for preparing optically active 2-[6-(hydroxy-methyl)-1,3-dioxan-4-yl] acetic acid derivatives
    • 光学活性的2- [6-(羟基 - 甲基)-1,3-二恶烷-4-基]乙酸衍生物的制备方法
    • US20060246557A1
    • 2006-11-02
    • US11477322
    • 2006-06-30
    • Akira NishiyamaMiho HorikawaYoshihiko YosoharaNoboru UeyamaKenji Inoue
    • Akira NishiyamaMiho HorikawaYoshihiko YosoharaNoboru UeyamaKenji Inoue
    • C12P7/64C12P7/62C07C51/00
    • C07D319/06C12P7/42C12P17/06
    • The present invention is to provide a production technology by which an optically active 2-[6-(hydroxymethyl)-1,3-dioxan-4-yl]acetic acid derivative, which are of value as pharmaceutical intermediates, can be produced from inexpensive and readily available starting materials without using any extraordinary equipment such as an ultra-low-temperature reactor. The present invention is a production process of an optically active 2-[6-(hydroxymethyl)-1,3-dioxan-4-yl]acetic acid derivative which comprises reacting an enolate, prepared by permitting a base or a 0-valent metal to act on an acetic acid ester derivative with (S)-β-hydroxy-γ-butyrolactone at a temperature not lower than −30° C. to give a dihydroxyoxohexanoic acid derivative, treating the same with an acylating agent in the presence of a base to produce a dihydroxyoxohexanoic acid monoacyl derivative, reducing this compound with a microorganism to produce a trihydroxyhexanoic acid monoacyl derivative, treating this compound with an acetal-forming reagent in the presence of an acid catalyst to produce an acyloxy-methyldioxanylacetic acid derivative, and finally, subjecting this compound to solvolysis in the presence of a base.
    • 本发明提供一种生产技术,通过该技术,可以以廉价的方式生产价值为医药中间体的光学活性的2- [6-(羟甲基)-1,3-二恶烷-4-基]乙酸衍生物 和容易获得的起始材料,而不使用任何非常设备,例如超低温反应器。 本发明是光学活性的2- [6-(羟甲基)-1,3-二恶烷-4-基]乙酸衍生物的制备方法,该方法包括使通过使碱或0价金属 在不低于-30℃的温度下用(S)-β-羟基-γ-丁内酯在乙酸酯衍生物上作用,得到二羟基氧代己酸衍生物,在酰化剂存在下用酰化剂处理 制备二羟基氧基己酸单酰基衍生物,用微生物还原该化合物以产生三羟基己酸单酰基衍生物,在酸催化剂存在下用缩醛形成试剂处理该化合物以产生酰氧基 - 甲基二恶烷基乙酸衍生物,最后 使该化合物在碱的存在下溶剂解。
    • 2. 发明申请
    • Process for preparing optically active 2-[6-(hydroxy-methyl)-1,3-dioxan-4-yl] acetic acid derivatives
    • 光学活性的2- [6-(羟基 - 甲基)-1,3-二恶烷-4-基]乙酸衍生物的制备方法
    • US20050080277A1
    • 2005-04-14
    • US10048553
    • 2001-06-05
    • Akira NishiyamaMiho HorikawaYoshihiko YasoharaNoboru UeyamaKenji Inoue
    • Akira NishiyamaMiho HorikawaYoshihiko YasoharaNoboru UeyamaKenji Inoue
    • C07D319/06C12P7/42C12P17/06
    • C07D319/06C12P7/42C12P17/06
    • The present invention is to provide a production technology by which an optically active 2-[6-(hydroxymethyl)-1,3-dioxan-4-yl]acetic acid derivative, which are of value as pharmaceutical intermediates, can be produced from inexpensive and readily available starting materials without using any extraordinary equipment such as an ultra-low-temperature reactor. The present invention is a production process of an optically active 2-[6-(hydroxymethyl)-1,3-dioxan-4-yl]acetic acid derivative which comprises reacting an enolate, prepared by permitting a base or a 0-valent metal to act on an acetic acid ester derivative with (S)-β-hydroxy-γ-butyrolactone at a temperature not lower than −30° C. to give a dihydroxyoxohexanoic acid derivative, treating the same with an acylating agent in the presence of a base to produce a dihydroxyoxohexanoic acid monoacyl derivative, reducing this compound with a microorganism to produce a trihydroxyhexanoic acid monoacyl derivative, treating this compound with an acetal-forming reagent in the presence of an acid catalyst to produce an acyloxymethyldioxanylacetic acid derivative, and finally, subjecting this compound to solvolysis in the presence of a base.
    • 本发明提供一种生产技术,通过该技术,可以以廉价的方式生产价值为医药中间体的光学活性的2- [6-(羟甲基)-1,3-二恶烷-4-基]乙酸衍生物 和容易获得的起始材料,而不使用任何非常设备,例如超低温反应器。 本发明是光学活性的2- [6-(羟甲基)-1,3-二恶烷-4-基]乙酸衍生物的制备方法,该方法包括使通过使碱或0价金属 在不低于-30℃的温度下用(S)-β-羟基-γ-丁内酯在乙酸酯衍生物上作用,得到二羟基氧代己酸衍生物,在酰化剂存在下用酰化剂处理 碱化以制备二羟基氧己基单酰基衍生物,用微生物还原该化合物以产生三羟基己酸单酰基衍生物,在酸催化剂存在下用缩醛形成试剂处理该化合物,得到酰氧基甲基二恶烷基乙酸衍生物,最后, 该化合物在碱存在下溶剂解。
    • 6. 发明授权
    • Processes for the preparation of 5-hydroxy-3-oxopentanoic acid derivatives
    • 5-羟基-3-氧代戊酸衍生物的制备方法
    • US06340767B1
    • 2002-01-22
    • US09762215
    • 2001-04-05
    • Akira NishiyamaKenji Inoue
    • Akira NishiyamaKenji Inoue
    • C07C5100
    • C12P7/62C07B2200/07C07C67/343C07C253/30C07D319/06C07C69/716C07C255/21C07C69/738
    • This invention provides a process for producing a 5-hydroxy-3-oxopentanoic acid, a useful pharmaceutical intermediate, easily from a readily available, inexpensive starting material without using any extraordinary production equipment such as a very-low-temperature reactor. Thus, this invention provides a process for producing a 5-hydroxy-3-oxopentanoic acid which comprises permitting a lithium amide to act upon a mixture of an acetic acid ester and a 3-hydroxypropionic acid derivative at not below −20° C. Further, this invention also provides a process for producing a 5-hydroxy-3-oxopentanoic acid which comprises treating a mixture of an acetic acid ester and a 3-hydroxypropionic acid derivative with a Grignard reagent to prepare a mixture of a compound and an acetic acid ester of the above formula (I), and permitting a lithium amide to act upon the mixture at a temperature not below −20° C.
    • 本发明提供一种生产5-羟基-3-氧代戊酸的方法,该方法是一种有用的药物中间体,容易从现成的廉价起始原料中生产,而不使用任何非常低的生产设备如极低温反应器。因此, 本发明提供了一种生产5-羟基-3-氧代戊酸的方法,其包括允许氨化锂在不低于-20℃下作用于乙酸酯和3-羟基丙酸衍生物的混合物。此外,本发明还 提供了一种生产5-羟基-3-氧代戊酸的方法,其包括用格氏试剂处理乙酸酯和3-羟基丙酸衍生物的混合物,以制备上式的化合物和乙酸酯的混合物 (I)化合物,并允许在不低于-20℃的温度下使氨基化锂作用于混合物。
    • 8. 发明授权
    • Process for production of 3-(3-pyridyl)-1-propanol derivatives
    • 3-(3-吡啶基)-1-丙醇衍生物的制备方法
    • US06388086B1
    • 2002-05-14
    • US09631678
    • 2000-08-02
    • Akira NishiyamaKazumi OkuroKenji Inoue
    • Akira NishiyamaKazumi OkuroKenji Inoue
    • C07D21330
    • C07D213/30
    • A process for producing a 3-(3-pyridyl)-1-propanol derivative of use as a pharmaceutical intermediate expediently with an inexpensive material is provided. The process is concerned with a 3-(3-pyridyl)-1-propanol derivative (3): in the formula, R1 represents an alkyl group of 1 to 20 carbon atoms, aryl group of 6 to 20 carbon atoms or aralkyl group of 7 to 20 carbon atoms, which may be substituted, and comprises reacting a 3-methylpyridine with a strong base to prepare a 3-methylpyridine metal (1): in the formula, M represents lithium, sodium, potassium or a magnesium halide, where the halide is chloride or bromide, and then reacting said metal salt with an epoxy compound (2):
    • 提供了以便宜的材料制备用作药物中间体的3-(3-吡啶基)-1-丙醇衍生物的方法。 该方法涉及3-(3-吡啶基)-1-丙醇衍生物(3):式中,R1表示碳原子数为1〜20的烷基,碳原子数为6〜20的芳基或芳烷基 可以被取代的7至20个碳原子,并且使3-甲基吡啶与强碱反应以制备3-甲基吡啶金属(1):在该式中,M表示锂,钠,钾或卤化镁,其中 卤化物是氯化物或溴化物,然后使所述金属盐与环氧化合物(2)反应:
    • 9. 再颁专利
    • Process for the preparation of 5-hydroxy-3-oxopentanoic acid derivatives
    • USRE39333E1
    • 2006-10-10
    • US10705665
    • 2000-06-02
    • Akira NishiyamaKenji Inoue
    • Akira NishiyamaKenji Inoue
    • C07C69/66C07C59/185
    • C12P7/62C07B2200/07C07C67/343C07C253/30C07D319/06C07C69/716C07C255/21C07C69/738
    • This invention provides a process for producing a 5-hydroxy-3-oxopentanoic acid, a useful pharmaceutical intermediate, easily from a readily available, inexpensive starting material without using any extraordinary production equipment such as a very-low-temperature reactor.Thus, this invention provides a process for producing a 5-hydroxy-3-oxopentanoic acid which comprises permitting a lithium amide to act upon a mixture of an acetic acid ester and a 3-hydroxypropionic acid derivative at not below −20° C. Further, this invention also provides a process for producing a 5-hydroxy-3-oxopentanoic acid which comprises treating a mixture of an acetic acid ester and a 3-hydroxypropionic acid derivative with a Grignard reagent to prepare a mixture of a compound and an acetic acid ester of the above formula (I), and permitting a lithium amide to act upon the mixture at a temperature not below −20° C. This invention provides a process for producing a 5-hydroxy-3-oxopentanoic acid, a useful pharmaceutical intermediate, easily from a readily available, inexpensive starting material without using any extraordinary production equipment such as a very-low temperature reactor. Thus, this invention provides a process for producing a 5-hydroxy-3-oxopentanoic acid which comprises permitting a lithium amide to act upon a mixture of an acetic acid ester and a 3-hydroxypropionic acid derivative at not below −20° C. Further, this invention also provides a process for producing a 5-hydroxy-3-oxopentanoic acid which comprises treating a mixture of an acetic acid ester and a 3-hydroxypropionic acid derivative with a Grignard reagent to prepare a mixture of a compound and an acetic acid ester of the above formula (I), and permitting a lithium amide to act upon the mixture at a temperature not below −20° C.
    • 10. 发明授权
    • Process for preparing optically active 2-[6-(hydroxy-methyl)-1,3-dioxan-4-yl] acetic acid derivatives
    • 光学活性的2- [6-(羟基 - 甲基)-1,3-二恶烷-4-基]乙酸衍生物的制备方法
    • US07094594B2
    • 2006-08-22
    • US10048553
    • 2001-06-05
    • Akira NishiyamaMiho HorikawaYoshihiko YasoharaNoboru UeyamaKenji Inoue
    • Akira NishiyamaMiho HorikawaYoshihiko YasoharaNoboru UeyamaKenji Inoue
    • C12P41/00
    • C07D319/06C12P7/42C12P17/06
    • The present invention is to provide a production technology by which an optically active 2-[6-(hydroxymethyl)-1, 3-dioxan-4-yl]acetic acid derivative, which are of value as pharmaceutical intermediates, can be produced from inexpensive and readily available starting materials without using any extraordinary equipment such as an ultra-low-temperature reactor.The present invention is a production process of an optically active 2-[6-(hydroxymethyl)-1,3-dioxan-4-yl]acetic acid derivative which comprises reacting an enolate, prepared by permitting a base or a 0-valent metal to act on an acetic acid ester derivative with (S)-β-hydroxy-γ-butyrolactone at a temperature not lower than −30° C. to give a dihydroxyoxohexanoic acid derivative, treating the same with an acylating agent in the presence of a base to produce a dihydroxyoxohexanoic acid monoacyl derivative, reducing this compound with a microorganism to produce a trihydroxyhexanoic acid monoacyl derivative, treating this compound with an acetal-forming reagent in the presence of an acid catalyst to produce an acyloxymethyldioxanylacetic acid derivative, and finally, subjecting this compound to solvolysis in the presence of a base.
    • 本发明提供一种生产技术,通过该技术,可以从廉价的方式制备价值为药物中间体的光学活性的2- [6-(羟甲基)-1,3-二恶烷-4-基]乙酸衍生物 和容易获得的起始材料,而不使用任何非常设备,例如超低温反应器。 本发明是光学活性的2- [6-(羟甲基)-1,3-二恶烷-4-基]乙酸衍生物的制备方法,该方法包括使通过使碱或0价金属 在不低于-30℃的温度下用(S)-β-羟基-γ-丁内酯在乙酸酯衍生物上作用,得到二羟基氧代己酸衍生物,在酰化剂存在下用酰化剂处理 碱化以制备二羟基氧己基单酰基衍生物,用微生物还原该化合物以产生三羟基己酸单酰基衍生物,在酸催化剂存在下用缩醛形成试剂处理该化合物,得到酰氧基甲基二恶烷基乙酸衍生物,最后, 该化合物在碱存在下溶剂解。