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    • 5. 发明授权
    • Crystal polymorphism of aminoethylphenoxyacetic acid derivative
    • 氨基乙基苯氧基乙酸衍生物的晶体多晶型
    • US06376707B1
    • 2002-04-23
    • US09889857
    • 2001-07-23
    • Michio TodaTetsuro TamaiNobuyuki TanakaKiyoshi KasaiJunichi SoneharaEiji Tsuru
    • Michio TodaTetsuro TamaiNobuyuki TanakaKiyoshi KasaiJunichi SoneharaEiji Tsuru
    • C07C22900
    • C07C217/60C07C213/10
    • The present invention relates to a crystalline polymorph of 2-[4-[2-[[(1S,2R)-2-hydroxy-2-(4-hydroxy-phenyl)-1-methylethyl]amino]ethyl]phenoxy]acetic acid having strong diffraction peaks (diffraction angle: 2&thgr;±0.1°) at 10.8, 19.1, 19.3, 19.8, 20.6 and 27.0° in powder X-ray diffraction pattern, which has potent &bgr;2- and &bgr;3-adrenoceptor stimulating effects and is useful as an agent for relieving pain and promoting the removal of calculi in urolithiasis, and the like. For example, the crystalline polymorph can be prepared by hydrolyzing ethyl 2-[4-[2-[[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]-amino]ethyl]phenoxy]acetate phosphate by sodium hydroxide, adding an aqueous phosphoric acid solution at 40° C. and over, adding a mixed solvent of water and methanol or methanol to the resulting compound, and stirring the suspension at 40° C. to reflux temperature for 30 minutes to several hours.
    • 本发明涉及2- [4- [2 - [[(1S,2R)-2-羟基-2-(4-羟基 - 苯基)-1-甲基乙基]氨基]乙基]苯氧基]乙酸的结晶多晶型物 在其粉末X射线衍射图中,在10.8,19.1,19.3,19.8,20.6和27.0°处具有强衍射峰(衍射角:2θ±0.1°)的酸,其具有有效的β2-和β3-肾上腺素受体刺激作用,并且是有用的 作为缓解疼痛并促进尿石结石中的结石的去除的药剂等。 例如,结晶多晶型物可以通过水解2- [4- [2 - [[(1S,2R)-2-羟基-2-(4-羟基苯基)-1-甲基乙基] - 氨基]乙基]苯氧基 ]乙酸磷酸盐与氢氧化钠反应,在40℃加入磷酸水溶液,过滤,向所得化合物中加入水和甲醇或甲醇的混合溶剂,并在40℃下将悬浮液在回流温度下搅拌30 几分钟到几个小时。