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    • 1. 发明申请
    • METHOD FOR PRODUCTION OF RADIATION DIAGNOSTIC IMAGING AGENT
    • 辐射诊断成像剂的生产方法
    • US20100119448A1
    • 2010-05-13
    • US12526667
    • 2008-02-12
    • Daisaku NakamuraSoichi NakamuraMasahito ToyamaAkio Hayashi
    • Daisaku NakamuraSoichi NakamuraMasahito ToyamaAkio Hayashi
    • A61K51/04
    • C07C229/48A61K9/0019A61K47/26A61K51/0402A61K51/0406C07B59/001C07B63/04C07B2200/05C07C2601/04
    • A method for producing a radioactive diagnostic imaging agent which contains a radioactive halogen-labeled amino acid compound as an effective ingredient and has a composition that can inhibit radiolysis of the effective ingredient, thereby further improving stability, is provided. Disclosed is a method for producing a radioactive diagnostic imaging agent, comprising a solution preparation step of preparing a solution containing a radioactive halogen-labeled amino acid compound, and a dilution step of diluting the solution containing the radioactive fluorine-labeled organic compound in order to adjust radioactive concentration thereof, which further comprises an acid addition step of adding an acid to the solution containing the radioactive fluorine-labeled organic compound, after the solution preparation step and before the dilution step, wherein the acid is added in the acid addition step in an amount sufficient to adjust the pH of the solution resulting from the dilution step to 2.0-5.9, for example, in an amount corresponding to 0.40-2.8 mmol per 1 L of the solution resulting from the dilution step.
    • 提供了含有放射性卤素标记的氨基酸化合物作为有效成分并具有能够抑制有效成分的放射线析出,从而进一步提高稳定性的组成的放射性诊断显像剂的制造方法。 本发明公开了一种放射性诊断显像剂的制造方法,其特征在于,包括:制备含有放射性卤素标记的氨基酸化合物的溶液的溶液制备工序,以及稀释含有放射性氟标记的有机化合物的溶液的稀释步骤, 调整其放射性浓度,其还包括在溶液制备步骤之后和稀释步骤之前在含有放射性氟标记的有机化合物的溶液中加入酸的酸添加步骤,其中在酸添加步骤中加入酸 足以将由稀释步骤得到的溶液的pH调节至2.0-5.9的量,例如,相对于每1L由稀释步骤得到的溶液为0.40-2.8mmol的量。
    • 2. 发明授权
    • Method for production of radiation diagnostic imaging agent
    • 辐射诊断成像剂生产方法
    • US08343459B2
    • 2013-01-01
    • US12526667
    • 2008-02-12
    • Daisaku NakamuraSoichi NakamuraMasahito ToyamaAkio Hayashi
    • Daisaku NakamuraSoichi NakamuraMasahito ToyamaAkio Hayashi
    • A61K51/00A61M36/14
    • C07C229/48A61K9/0019A61K47/26A61K51/0402A61K51/0406C07B59/001C07B63/04C07B2200/05C07C2601/04
    • A method for producing a radioactive diagnostic imaging agent which contains a radioactive halogen-labeled amino acid compound as an effective ingredient and has a composition that can inhibit radiolysis of the effective ingredient, thereby further improving stability, is provided. Disclosed is a method for producing a radioactive diagnostic imaging agent, comprising a solution preparation step of preparing a solution containing a radioactive halogen-labeled amino acid compound, and a dilution step of diluting the solution containing the radioactive fluorine-labeled organic compound in order to adjust radioactive concentration thereof, which further comprises an acid addition step of adding an acid to the solution containing the radioactive fluorine-labeled organic compound, after the solution preparation step and before the dilution step, wherein the acid is added in the acid addition step in an amount sufficient to adjust the pH of the solution resulting from the dilution step to 2.0-5.9, for example, in an amount corresponding to 0.40-2.8 mmol per 1 L of the solution resulting from the dilution step.
    • 提供了含有放射性卤素标记的氨基酸化合物作为有效成分并具有能够抑制有效成分的放射线析出,从而进一步提高稳定性的组成的放射性诊断显像剂的制造方法。 本发明公开了一种放射性诊断显像剂的制造方法,其特征在于,包括:制备含有放射性卤素标记的氨基酸化合物的溶液的溶液制备工序,以及稀释含有放射性氟标记的有机化合物的溶液的稀释步骤, 调整其放射性浓度,其还包括在溶液制备步骤之后和稀释步骤之前在含有放射性氟标记的有机化合物的溶液中加入酸的酸添加步骤,其中在酸添加步骤中加入酸 足以将由稀释步骤得到的溶液的pH调节至2.0-5.9的量,例如,相对于每1L由稀释步骤得到的溶液为0.40-2.8mmol的量。
    • 6. 发明授权
    • Process for producing optically active tropinonemonocarboxylic acid derivative
    • 光学活性托品酮一羧酸衍生物的制备方法
    • US06486323B1
    • 2002-11-26
    • US09806592
    • 2001-03-30
    • Manabu NodeSoichi NakamuraDaisaku Nakamura
    • Manabu NodeSoichi NakamuraDaisaku Nakamura
    • C07D45102
    • C12P17/10C12P41/00C12P41/005
    • An optically active tropinonemonocarboxylic acid ester derivative useful as an intermediate for synthesis of optically active tropane derivatives was obtained by reacting succindialdehyde with an organic amine and acetonedicarboxylic acid ester to obtain a tropinonedicarboxylic acid ester derivative, and then subjecting this derivative to enzyme-catalyzed asymmetric dealkoxy-carbonylation. Since anhydroecgonine methyl ester derived from the optically active tropinone-monocarboxylic acid ester derivative by reduction and dehydration had the same direction of optical rotation as in the case of anhydroecgonine methyl ester obtained from natural cocaine, it was proved that the obtained optically active tropinonemonocarboxylic acid ester derivative had the same absolute configuration as that of natural cocaine. The yield of the optically active tropinonemonocarboxylic acid ester derivative from the asymmetric dealkoxycarbonylation was 30 to 50 mol %, and its optical purity was 70 to 97% ee. In addition, it was found that a crystalline optically active anhydroecgonine carboxylic acid ester derivative can be obtained by reducing and then dehydrating the optically active tropinonemonocarboxylic acid ester derivative and that its optical purity can easily be increased by recrystallization.
    • 通过使琥珀醛与有机胺和丙酮二羧酸酯反应得到托品酮二羧酸酯衍生物,然后将该衍生物进行酶催化的不对称脱烷基,得到用作合成光学活性托烷衍生物的中间体的光学活性托品酮单羧酸酯衍生物 羰基化。 由于通过还原和脱水衍生自光学活性的托品酮 - 单羧酸酯衍生物的脱氢异君子酸甲酯具有与从天然可卡因得到的脱氢山梨醇甲酯的情况相同的旋光方向,所以证明得到的光学活性托品酮单羧酸酯 衍生物具有与天然可卡因相同的绝对构型。 来自不对称脱烷基羰基化反应的光学活性托品酮二羧酸酯衍生物的收率为30〜50摩尔%,光学纯度为70〜97%ee。 此外,发现通过使光学活性托品酮一羧酸酯衍生物还原然后使其脱水,可以得到结晶光学活性的脱氢gon根化羧酸酯衍生物,并且可以通过重结晶容易地提高其光学纯度。
    • 10. 发明申请
    • NOVEL COMPOUND HAVING AFFINITY FOR AMYLOID
    • 具有AMYLOID亲和性的新化合物
    • US20100249418A1
    • 2010-09-30
    • US12739348
    • 2008-10-24
    • Shigeyuki TanifujiDaisaku NakamuraShinya TakasakiYuki Okumura
    • Shigeyuki TanifujiDaisaku NakamuraShinya TakasakiYuki Okumura
    • C07D471/04
    • C07D471/04A61K51/0455
    • A compound effective as a probe targeting amyloid for image diagnosis and a reagent comprising the compound for detecting amyloid deposited on a biological tissue are provided. Provided are a compound represented by the following formula (1): wherein R1 is a group selected from the group consisting of a halogen substituent, alkyl substituent with 1 to 4 carbon atoms, alkoxy substituent having alkyl chain with 1 to 4 carbon atoms and hydroxyl group, R2 is a group selected from the group consisting of a cyano substituent, alkyl substituent with 1 to 4 carbon atoms and halogen substituent, R3 is a group selected from the group consisting of a hydroxyl group, halogen substituent and substituent represented by the following formula: (wherein R4 is a hydrogen, halogen substituent or hydroxyl group, and m is an integer of 1 to 4), provided that at least one of R1, R2, R3 and R4 represents a radioactive halogen, and a reagent comprising the same.
    • 提供了有效作为靶向用于图像诊断的淀粉样蛋白的探针的化合物和包含用于检测沉积在生物组织上的淀粉样蛋白的化合物的试剂。 提供由下式(1)表示的化合物:其中R 1是选自卤素取代基,具有1至4个碳原子的烷基取代基,具有1至4个碳原子的烷基链的烷氧基取代基和羟基的基团 基团,R 2为选自氰基取代基,具有1〜4个碳原子的烷基取代基和卤素取代基的基团,R 3为选自羟基,卤素取代基和下述基团的取代基的基团 式(R 4为氢,卤素取代基或羟基,m为1〜4的整数),条件是R 1,R 2,R 3和R 4中的至少一个表示放射性卤素,和含有该卤素的试剂 。