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    • 3. 发明申请
    • PROCESS FOR OBTAINING OPTICALLY ACTIVE L-ALPHA-AMINOCARBOXYLIC ACIDS FROM CORRESPONDING RACEMIC D,L-ALPHA-AMINOCARBOXYLIC ACIDS
    • PROCEDURE用于获得光学活性的L-α-氨基酸羧酸OFF相应的外消旋D,L-α-氨基羧酸
    • WO1997021663A1
    • 1997-06-19
    • PCT/EP1996005440
    • 1996-12-05
    • DEGUSSA AKTIENGESELLSCHAFTDRAUZ, KarlheinzBOMMARIUS, AndreasKARRENBAUER, MichaelKNAUP, Günter
    • DEGUSSA AKTIENGESELLSCHAFT
    • C07C227/34
    • C12P13/04C07C227/34C07C227/36C07C319/20C12P41/007C07C323/60
    • The disclosure relates to a process for obtaining optically active L- alpha -aminocarboxylic acids from the corresponding racemic D,L, alpha -aminocarboxylic acids. The following steps are involved: (a) the D,L, alpha -aminocarboxylic acids are acetylated; (b) the N-acetyl-L- alpha -aminocarboxylic acid present in the mixture of N-acetyl-D,L, alpha -aminocarboxylic acids thus obtained is broken down enzymatically into the L- alpha -aminocarboxylic acid; (c) the L- alpha -aminocarboxylic acid is separated from the mixture, a quantity of a solution with N-acetyl-D(L)- alpha -aminocarboxylic acids and a quantity of acetate equivalent to the L- alpha -aminocarboxylic acid being retained; and (d) the N-acetyl-D(L)- alpha -aminocarboxylic acid is racemised and recycled for enzymatic breakdown. Known extraction processes involving steps (a) to (d) have the disadvantage of producing large quantities of salts. Specifically, the processes are far removed from the ideal equation, according to which one hundred percent of the acetic anhydride and the D,L, alpha -aminocarboxylic acids are converted to L- alpha -aminocarboxylic acids and acetic acid. Adjusting the retained solution from step (c) in such a way as to obtain a solution consisting essentially of N-acetyl-D-(L)- alpha -aminocarboxylic acid salt and free acetic acid in equilibrium with acetate and free N-acetyl-D(L)- alpha -aminocarboxylic acid and from which acetic acid is extracted by distillation makes it surprisingly easy to feed the solution formed as "mother liquor" following separation of the L- alpha -aminocarboxylic acids in the circuit and to achieve a materials balance as close as possible to the ideal.
    • 公开了一种用于从相应的外消旋D,L-α氨基羧酸中,D,L-α-氨基羧酸获得的光学活性的L-α-氨基酸的方法被乙酰化,其中(a); (B)的氨基羧酸在这样获得的N-乙酰基D的混合物,L-α本N-乙酰基-L-阿尔法氨基羧酸酶促到的L-α-氨基羧酸切割; (C)所述的L-α-氨基羧酸从混合物的回退的N-乙酰基-D-(L)下分离 - α氨基羧酸和含乙酸溶液的L-形成α氨基羧酸等价量的一种; 和溶液中所含的N-乙酰基-D-(L)(D) - 是α-氨基羧酸外消旋化和再循环的酶促切割。 在已知的回收方法,其中所述步骤(a)至(d),大量盐负荷降低到不利的。 特别地,理想的方程的方法,在这之后的乙酸酐和D,L-α-氨基羧酸是百分之百的L-α-氨基羧酸和乙酸,远。 特征在于,所述返回保留从步骤(c)的溶液被调整,使得基本上正式N-乙酰基D(L) - α-aminocarbonsäuresalz和游离乙酸平衡用乙酸和游离N-乙酰基-D-(L) - 得到的α-氨基羧酸现有的解决方案,从其中通过蒸馏除去乙酸,有可能以一种非常简单的方式,导致使用该电路的L-α-氨基羧酸为“母液”和理想的一个尽可能靠近物料平衡分离后的溶液供给 实现。
    • 4. 发明申请
    • KINETICALLY CONTROLLED PROCESS FOR ENZYMATIC PRODUCTION OF PEPTIDES
    • 动力学方法对于酶法生产肽
    • WO1996001906A1
    • 1996-01-25
    • PCT/EP1995002655
    • 1995-07-07
    • DEGUSSA AKTIENGESELLSCHAFTJAKUBKE, Hans-DieterHÄNSLER, MarionWALDMANN, HerbertDRAUZ, KarlheinzBOMMARIUS, Andreas
    • DEGUSSA AKTIENGESELLSCHAFT
    • C12P21/02
    • C07K1/062C12P21/02Y02P20/55
    • The invention pertains to a kinetically controlled process for enzymatic production of fully protected peptides formula (III): X-NH-A -CO-NH-A -CO-Y, wherein fully protected amino acid esters of formula (I): X-NH-A -CO-Y' as acyl donor, in which X and Y' are protective groups and A is an amino acid or peptide radical, are reacted with Y-protected amino acids or peptides of formula (II): NH2-A -CO-Y (as nucleophiles), in which Y' is a different protective group and A is an amino acid or peptide radical, in the presence of a biocatalyst (e.g. protease, preferably chymotrypsin or trypsin or (choline)-esterase), characterized in that Y' is choline or one of its salts and that the biocatalyst is an enzyme that catalyzes the cleaving to the choline-ester bond and the transfer of the acyl radical X-NH-A -CO to the compound of formula (II). The choline estes lend solubility properties and efficient acyl-donor properties for the biocatalytic linkage of peptide bonds.
    • 本发明涉及控制一个kinetish,酶法生产式(III)的完全保护的肽的方法:NH-A <1> -CO-NH-A <2> -CO-Y,其中式vollgestüzte氨基酸巢(I):X -NH-A <1> -CO-Y '作为酰基供体,其中X和Y' 保护基团,和一个<1>代表氨基酸或肽残基,Y保护的氨基酸或式的肽(II):NH2-A < 2> CO-Y是(如亲核试剂),其中Y“是不同的保护基团,和一个<2>是氨基酸或肽残基,在生物催化剂的存在下(Z。B.蛋白酶,优选胰蛋白酶或胰凝乳蛋白酶或(胆碱)酯酶)Y 进行反应,其特征在于,Y“胆碱或它们的盐是指,并且所述生物催化剂是胆碱酯键的裂解和酰基X-NH-A <1>为-CO式的化合物的转移(II) 被催化酶。 胆碱传授的溶解性和有效的用于Acyldonoreigenschaftem生物催化的肽键形成。
    • 6. 发明申请
    • PROCESS FOR SEPARATING SUBSTANCES USING A SUITABLE MEMBRANE
    • 方法用于分离物质通过适当的REED手段
    • WO1997029837A2
    • 1997-08-21
    • PCT/EP1997000734
    • 1997-02-17
    • DEGUSSA AKTIENGESELLSCHAFTWANDREY, ChristianKRAGL, UdoBOMMARIUS, AndreasDRAUZ, Karlheinz
    • DEGUSSA AKTIENGESELLSCHAFT
    • B01D61/02
    • C07C51/42B01D61/02B01J4/04B01J19/2475
    • In catalytic reactions and reactions requiring synthesis-promoters, it is useful to be able to separate the promoter from the product formed and thus make it available for recycling. One possible way of achieving this separation is by immobilising the synthesis-promoter on special carriers. This, however, often reduces the contact area between the promoter and carrier and thus markedly reduces the reactivity of the promoter or alters its mode of action. The immobilisation process itself may also present problems in terms of working time spent and catalyst loss. If the product and promoter in a catalytic reaction are separated by filtration using a nanofiltration or reverse osmosis membrane, it is possible, even when the weight differences between promoter and product are relatively small and provided that the retension differences are sufficient and the associated recovery rate of the promoter therefore high, to dispense with separation based on immobilisation techniques. The process proposed can be used for separating reaction mixtures for catalytic reactions with the aim of efficiently producing organic synthesis products or optically active organic compounds.
    • 在催化反应中和在需要合成助剂反应中,有利的是能够以该辅助物质从所得产物中分离,从而使回收访问。 单程为达到这个间距,合成佐剂特定运营商的固定。 这通常,但在赋形剂和载体之间的接触面积减少,由此,辅助剂的反应性大大降低的或改变的佐剂的作用模式是要被记录。 此外,劳动和催化剂损失方面的固定化过程中也不是没有问题。 其特征在于,产品和赋形剂在催化反应通过纳的分离通过过滤或反渗透膜进行时,即使在佐剂和产品之间的佐剂的又足够高Retensionsunterschieden和相关联的高回收率至分离装置相对低的质量的差异 固定化而放弃。 反应混合物分离为高效生产的有机合成产品或光学活性的有机化合物的催化反应。