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    • 3. 发明申请
    • 2-AMINO-9-(2-SUBSTITUTED ETHYL)PURINES AND PREPARING METHODS FOR 9-[4-ACETOXY-3-(ACETOXYMETHYL)BUT-1-YL]- 2- AMINOPURINE USING THE SAME
    • 2-氨基-9-(2-取代的乙醇)和9- [4-乙酰氧基-3-(乙酰氧基甲基)丁-1-炔基] -2-氨基嘌呤的制备方法
    • WO2004110343A3
    • 2005-09-01
    • PCT/KR2004001405
    • 2004-06-12
    • KYUNGDONG PHARM CO LTDLEE BYOUNG-SUKSHIN SANG-HOONPARK JONG-SIK
    • LEE BYOUNG-SUKSHIN SANG-HOONPARK JONG-SIK
    • A61K20060101C07D473/32
    • C07D473/32
    • The present invention relates to a new compound of 2-amino-9-(2-substituted ethyl)purine and an effective method for preparing 9-[4-acetoxy-3-(acetoxymethyl)but-1-yl]-2-aminopurin (famciclovir) using the same. The 2-amino-9-(2-substituted ethyl)purine according to the invention is represented by the following formula (II'): (Formula II') wherein R is a hydroxy, halogen, mesyloxy or tosyloxy group. The inventive method for the preparation of famciclovir comprises the steps of halogenating 2-amino-9-(2-substituted ethyl)purine to give 2-amino-9-(2-halogenoethyl)purine, and reacting the halogenated compound with diethylmalonate. The inventive preparation method allows famciclovir, a purine derivative drug with effective antiviral activity, to be prepared in a high selectivity of 100% in a pure form by using the inventive new compound of 2-amino-9-(2-substituted ethyl)purine. In addition, the inventive method allows the utilization of relatively mild reaction conditions, and thus, has high industrial process efficiency.
    • 本发明涉及2-氨基-9-(2-取代乙基)嘌呤的新化合物和制备9- [4-乙酰氧基-3-(乙酰氧基甲基)丁-1-基] -2-氨基嘌呤的有效方法 (泛昔洛韦)使用相同。 根据本发明的2-氨基-9-(2-取代的乙基)嘌呤由下式(II')表示:(式II')其中R是羟基,卤素,甲磺酰氧基或甲苯磺酰氧基。 用于制备泛昔洛韦的本发明方法包括以下步骤:将2-氨基-9-(2-取代的乙基)嘌呤卤化得到2-氨基-9-(2-卤代乙基)嘌呤,并使该卤代化合物与丙二酸二乙酯反应。 本发明的制备方法允许泛昔洛韦(一种具有有效抗病毒活性的嘌呤衍生物)通过使用本发明新的2-氨基-9-(2-取代的乙基)嘌呤化合物以高纯度的100%选择性制备 。 此外,本发明的方法允许利用相对温和的反应条件,因此具有高工业过程效率。
    • 5. 发明申请
    • 2-AMINO-9-(2-SUBSTITUTED ETHYL)PURINES AND PREPARING METHODS FOR 9-[4-ACETOXY-3-(ACETOXYMETHYL)BUT-1-YL]- 2- AMINOPURINE USING THE SAME
    • 2-氨基-9-(2-取代的乙醇)和9- [4-乙酰氧基-3-(乙酰氧基甲基)丁-1-炔基] -2-氨基嘌呤的制备方法
    • WO2004110343A2
    • 2004-12-23
    • PCT/KR2004/001405
    • 2004-06-12
    • KYUNGDONG PHARM. CO., LTD.LEE, Byoung-SukSHIN, Sang-HoonPARK, Jong-Sik
    • LEE, Byoung-SukSHIN, Sang-HoonPARK, Jong-Sik
    • A61K
    • C07D473/32
    • The present invention relates to a new compound of 2-amino-9-(2-substituted ethyl)purine and an effective method for preparing 9-[4-acetoxy-3-(acetoxymethyl)but-1-yl]-2-aminopurin (famciclovir) using the same. The 2-amino-9-(2-substituted ethyl)purine according to the invention is represented by the following formula (II'): (Formula II') wherein R is a hydroxy, halogen, mesyloxy or tosyloxy group. The inventive method for the preparation of famciclovir comprises the steps of halogenating 2-amino-9-(2-substituted ethyl)purine to give 2-amino-9-(2-halogenoethyl)purine, and reacting the halogenated compound with diethylmalonate. The inventive preparation method allows famciclovir, a purine derivative drug with effective antiviral activity, to be prepared in a high selectivity of 100% in a pure form by using the inventive new compound of 2-amino-9-(2-substituted ethyl)purine. In addition, the inventive method allows the utilization of relatively mild reaction conditions, and thus, has high industrial process efficiency.
    • 本发明涉及2-氨基-9-(2-取代乙基)嘌呤的新化合物和制备9- [4-乙酰氧基-3-(乙酰氧基甲基)丁-1-基] -2-氨基嘌呤的有效方法 (泛昔洛韦)使用相同。 根据本发明的2-氨基-9-(2-取代的乙基)嘌呤由下式(II')表示:(式II')其中R是羟基,卤素,甲磺酰氧基或甲苯磺酰氧基。 用于制备泛昔洛韦的本发明方法包括以下步骤:将2-氨基-9-(2-取代的乙基)嘌呤卤化得到2-氨基-9-(2-卤代乙基)嘌呤,并使该卤代化合物与丙二酸二乙酯反应。 本发明的制备方法允许泛昔洛韦(一种具有有效抗病毒活性的嘌呤衍生物)通过使用本发明新的2-氨基-9-(2-取代的乙基)嘌呤化合物以高纯度的100%选择性制备 。 此外,本发明的方法允许利用相对温和的反应条件,因此具有高工业过程效率。
    • 7. 发明公开
    • Reinforcing plastic panel
    • 增强塑料面板
    • KR20100112875A
    • 2010-10-20
    • KR20090031392
    • 2009-04-10
    • PARK JONG SIK
    • PARK JONG SIK
    • B32B27/12B32B27/04
    • B32B15/09B32B15/02B32B27/12B32B2607/00
    • PURPOSE: A reinforcing plastic panel is provided to minimize the transformation of the shape due to the thermal expansion by combing the various reinforcing material inside the synthetic resin. CONSTITUTION: A reinforcing plastic panel includes a synthetic resin(10), an adhesive part, and a reinforcing material(20). Reinforcing material is combined to prevent the change of the transformation due to the thermal expansion inside the synthetic resin. In one side of the synthetic resin, the adhesive part increasing the adhesive ability with the other object is combined. The reinforcing material and adhesive part is formed into one with synthetic resin by extrusion molding. The reinforcing material is comprised of one among a hole steel plate, a wire netting, and an iron core.
    • 目的:提供一种加强塑料面板,以通过将合成树脂内部的各种增强材料进行精梳来最小化由于热膨胀而导致的形状的变形。 构成:增强塑料面板包括合成树脂(10),粘合剂部分和增强材料(20)。 组合加强材料以防止由合成树脂内的热膨胀引起的变形的变化。 在合成树脂的一侧,将与另一个物体的粘合能力增加的粘合剂部分组合。 增强材料和粘合剂部分通过挤出成型与合成树脂形成一体。 增强材料由孔钢板,丝网和铁芯中的一种构成。