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    • 9. 发明授权
    • Thermally stable trimetrexates and processes for producing the same
    • 热稳定性三甲氧戊酸及其制备方法
    • US06258952B1
    • 2001-07-10
    • US09436708
    • 1999-11-09
    • Martin StogniewIngomar GrafeJohann Mörsdorf
    • Martin StogniewIngomar GrafeJohann Mörsdorf
    • A61K31517
    • C07D239/95
    • The present invention provides for thermally stable forms of 2,4-diamino-5-methyl-6-[(3,4,5-trimethoxyanilino)methyl] quinazoline, or trimetrexate. A crystalline 2,4-diamino-5-methyl-6-[(3,4,5-trimethoxyanilino)methyl] quinazoline monohydrate, or trimetrexate monohydrate, belonging to the space group P{overscore (1)}(#2) and having a triclinic cell with dimensions of about a=7.699 Å, b=9.606 Å and c=13.012 Å is disclosed. A novel Schiff base compound, 2,4-diamino-5-methyl-6-[(3,4,5-trimethoxyphenylimino)-methinyl]quinazoline, is also disclosed. The present invention further provides novel methods of producing stable trimetrexate free base compounds, including crystalline trimetrexate monohydrate. The crystalline monohydrate form provides increased stability over the anhydrous form.
    • 本发明提供2,4-二氨基-5-甲基-6 - [(3,4,5-三甲氧基苯胺基)甲基]喹唑啉或三甲氧甲酸酯的热稳定形式。 属于空间群P {overscore(1)}(#2)的结晶的2,4-二氨基-5-甲基-6 - [(3,4,5-三甲氧基苯胺基)甲基]喹唑啉一水合物或三甲
      铵一水合物 具有尺寸为约a =7.699,b =9.606和c =13.012的三斜晶细胞。 还公开了一种新型席夫碱化合物,2,4-二氨基-5-甲基-6 - [(3,4,5-三甲氧基苯基亚氨基) - 甲基苯基]喹唑啉。 本发明还提供了生产稳定的三甲氧铵游离碱化合物,包括结晶三甲氧甲酸一水合物的新方法。 结晶一水合物形式比无水形式提供了更高的稳定性。
    • 10. 发明授权
    • Thermally stable trimetrexates and processes for producing the same
    • 热稳定性三甲氧戊酸及其制备方法
    • US6017922A
    • 2000-01-25
    • US80290
    • 1998-05-18
    • Martin StogniewIngomar GrafeJohann Morsdorf
    • Martin StogniewIngomar GrafeJohann Morsdorf
    • A61K31/517A61P31/04A61P33/10A61P35/00C07D239/95A61K31/505
    • C07D239/95
    • The present invention provides for thermally stable forms of 2,4-diamino-5-methyl-6-[(3,4,5-trimethoxyanilino)methyl] quinazoline, or trimetrexate. A crystalline 2,4-diamino-5-methyl-6-[(3,4,5-trimethoxyanilino)methyl] quinazoline monohydrate, or trimetrexate monohydrate, belonging to the space group P1(#2) and having a triclinic cell with dimensions of about a=7.699 .ANG., b=9.606 .ANG. and c=13.012 .ANG. is disclosed. A novel Schiff base compound, 2,4-diamino-5-methyl-6-[(3,4,5-trimethoxyphenylimino)-methinyl]quinazoline, is also disclosed. The present invention further provides novel methods of producing stable trimetrexate free base compounds, including crystalline trimetrexate monohydrate. The crystalline monohydrate form provides increased stability over the anhydrous form.
    • 本发明提供2,4-二氨基-5-甲基-6 - [(3,4,5-三甲氧基苯胺基)甲基]喹唑啉或三甲氧甲酸酯的热稳定形式。 属于空间群P + E,ov 1 + EE(#2)的结晶的2,4-二氨基-5-甲基-6 - [(3,4,5-三甲氧基苯胺基)甲基]喹唑啉一水合物或三甲氧甲酸一水合物, 并且具有尺寸为约a = 7.699 ANGSTROM,b = 9.606 ANGSTROM和c = 13.012 ANGSTROM的三斜晶胞。 还公开了一种新型席夫碱化合物,2,4-二氨基-5-甲基-6 - [(3,4,5-三甲氧基苯基亚氨基) - 甲基苯基]喹唑啉。 本发明还提供了生产稳定的三甲氧铵游离碱化合物,包括结晶三甲氧甲酸一水合物的新方法。 结晶一水合物形式比无水形式提供了更高的稳定性。