会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明授权
    • Process for recovering protease
    • 回收蛋白酶的方法
    • US4212946A
    • 1980-07-15
    • US907203
    • 1978-05-18
    • Yuji NonakaKiyotaka OyamaHeijiro Satoh
    • Yuji NonakaKiyotaka OyamaHeijiro Satoh
    • C12N9/00C07K5/06C07K5/075C12N9/50C12P21/02C12N9/48C07G7/02
    • C12N9/50C12P21/02Y10S435/816
    • Protease is recovered by reacting a first amino acid whose amino group is protected with a protective group with a second amino acid whose carboxyl group is protected with a protective group, in an aqueous medium in the presence of a protease to result a peptide synthesis to deposit the addition compound of a dipeptide and said second C-terminal protected amino acid; dissolving said addition compound by adding an organic solvent to a precipitate separated from the reaction mixture and isolating the protease from an organic solvent suspension or dissolving said addition compound by adding a water immiscible organic solvent and separating the organic solvent phase by a liquid-liquid separation.The addition compound can be dissolved in an organic solvent after separating the precipitate from the reaction mixture.The addition compound can be also dissolved by adding a water-immiscible organic solvent to the reaction mixture and the organic solvent phase can be separated from the aqueous phase.
    • 通过使氨基被保护基团的第一个氨基酸与其羧基被保护基团保护的第二个氨基酸在水性介质中在蛋白酶存在下反应,从而使肽合成沉积,从而回收蛋白酶 二肽和所述第二C末端保护的氨基酸的加成化合物; 通过向从反应混合物分离的沉淀物中加入有机溶剂来溶解所述加成化合物,并从有机溶剂悬浮液中分离蛋白酶或通过加入与水不混溶的有机溶剂溶解所述加成化合物并通过液 - 液分离分离有机溶剂相 。 在从反应混合物中分离出沉淀物后,加成化合物可以溶解在有机溶剂中。 加成化合物也可以通过向反应混合物中加入与水不混溶的有机溶剂而溶解,并且有机溶剂相可以与水相分离。
    • 7. 发明授权
    • Method for reductive elimination of protecting groups
    • 还原消除保护基团的方法
    • US4564471A
    • 1986-01-14
    • US188107
    • 1980-09-17
    • Katsumi SugiyamaHideo TakedaHiroko SatoYuji NonakaKiyotaka OyamaMasashige Kubo
    • Katsumi SugiyamaHideo TakedaHiroko SatoYuji NonakaKiyotaka OyamaMasashige Kubo
    • C07B31/00C07B51/00C07C67/00C07C227/00C07C227/16C07C227/18C07C227/20C07C231/00C07K1/06C07K1/12C07K5/075C07C101/02
    • C07K1/12C07K5/0613Y02P20/55
    • The invention provides a novel and efficient method for the elimination of protecting groups, e.g. benzyloxycarbonyl group, from a protected amino acid, peptide or derivative thereof having at least one functional group protected by a protecting group, e.g. a lower alkyl ester of N-benzyloxycarbonyl-.alpha.-L-aspartyl-L-phenylalanine by catalytic hydrogen reduction to produce free amino acid, peptide or derivative thereof. In contrast to the conventional procedures in which the reaction is carried out in a solvent dissolving both the starting compound and the product compound or a solvent dissolving the starting compound but not dissolving the product compound, the inventive method utilizes a binary two-phase reaction medium composed of water and an organic solvent not freely miscible with water such as toluene. The reaction takes place in the organic phase containing the starting compound dissolved and the catalyst dispersed therein whereas the reaction product which is water-soluble is smoothly and successively transferred into the aqueous phase so that advantages are obtained in the unexpectedly high yield of the product as well as in the easiness of handling the reaction mixture after completion of the reaction.
    • 本发明提供了一种用于消除保护基团的新型和有效的方法,例如, 苄氧羰基,被保护的氨基酸,具有至少一个被保护基保护的官能团的肽或衍生物。 N-苄氧羰基-α-L-天冬氨酰基-L-苯丙氨酸的低级烷基酯通过催化氢还原反应产生游离氨基酸,肽或其衍生物。 与在溶解起始化合物和产物化合物的溶剂或溶解起始化合物但不溶解产物化合物的溶剂中进行反应的常规方法相反,本发明的方法利用二元二相反应介质 由水和不能与水如甲苯自由混溶的有机溶剂组成。 反应发生在含有溶解的起始化合物和分散在其中的催化剂的有机相中,而水溶性的反应产物顺利地依次转移到水相中,从而获得了产品出乎意料的高产率的优点, 以及在反应完成后容易处理反应混合物。