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    • 7. 发明授权
    • Liquid phase process for the preparation of GNRH peptides
    • 用于制备GNRH肽的液相方法
    • US06235876B1
    • 2001-05-22
    • US09350231
    • 1999-07-08
    • David C. PalmerAhmed Abdel-MagidUrs P. EggmannBruce HarrisKirk L. Sorgi
    • David C. PalmerAhmed Abdel-MagidUrs P. EggmannBruce HarrisKirk L. Sorgi
    • C07K704
    • C07K5/0815C07K5/101C07K5/1013C07K5/1016C07K7/23Y02P20/55
    • A liquid phase process for preparing GnRH peptide analogs of the formula: G-AA1-(A)D-Phe-AA3-AA4-(R2-AA5-AA6-AA7-AA8-Pro-AA10-NH2   Formula 1 which comprises: (a) reacting a peptide of the formula: T-(R2)AA5-AA6-X  where T is (P2) AA4 orP2 and X is AA7-OH or is —OH, with a peptide of the formula: X′-AA8-Pro-AA10-NH2  or acid-addition salt form thereof, where X′ is AA7 when X is absent and X′ is absent when X is AA7-OH;  in a liquid reaction medium in the presence of a peptide coupling reagent and a strong organic amine base to obtain a product of the formula: T-(R2)AA5-AA6-AA7-AA8-Pro-AA10-NH2 (b) removing the P2 protecting group at the N-terminus, and (c) reacting the product of step (b) or an acid addition salt thereof, with a peptide of the formula: G-AA1-(R1)D-Phe-AA3-T′  or acid-addition salt form thereof, where T′ is AA4-OH when T is absent and is absent when T is P2-AA4, in a liquid reaction medium to obtain a GnRH peptide of the formula: G-AA1-(A)D-Phe-AA3-AA4-(R2)AA5-AA6-AA7-AA8-Pro-AA10-NH2.
    • 用于制备下式的GnRH肽类似物的液相方法:其包括:(a)使下式的肽与其中T是(P2)AA4或P2,X是AA7-OH或-OH的肽反应, 式:或其酸加成盐形式,其中当X不存在时X'为AA 7,X为AA 7 -OH时X'不存在; 在液体反应介质中,在肽偶联剂和强有机胺碱存在下,得到下式的产物:(b)在N末端除去P2保护基,和(c)使步骤 (b)或其酸加成盐与下式的肽或其酸加成盐形式,当T不存在时T'为AA4-OH,当T为P2-AA4时不存在,在液体反应中 培养基以获得下式的GnRH肽: