摘要:
The present invention relates to a novel enzymatically catalyzed method for the production of asymmetric aromatic aldehydes in an aqueous reaction medium containing certain organic co-solvents.
摘要:
A process for preparing optically active saturated aldehydes or alcohols of the formula (2) from α,β-unsaturated aldehydes of the formula (1) by reduction in the presence of an enoate reductase (i) having the polypeptide sequence SEQ ID No. 1 or 2, or (ii) having a polypeptide sequence which is at least 80% identical to the sequence of SEQ ID No. 1 or 2.
摘要翻译:通过在具有多肽序列SEQ ID No.的烯酸还原酶(i)的存在下还原从式(1)的α,β-不饱和醛制备式(2)的旋光性饱和醛或醇的方法。 1或2,或(ii)具有与SEQ ID No.1或2的序列至少80%相同的多肽序列。
摘要:
A process for preparing optically active 2-methylalkan-1-ol of the general formula (III) comprising the following steps: (i) carbonyl-selective reduction of 2-methylalk-2-en-1-al of the general formula (I) to 2-methylalk-2-en-1-ol of the general formula (II), (ii) enantioselective hydrogenation of 2-methylalk-2-en-1-ol to the general formula (iii), (iii) increasing the optical yield of the optically active 2-methylalkan-1-ol (III) obtained in step (ii) by a lipase-catalyzed acylation reaction, where the radical R means C1-C10-alkyl.
摘要:
A method for enzymatic preparation of compounds of the general formula (2) from unsaturated alkene derivatives of the general formula (1) by reducing a compound of the formula (1) in the presence of a reductase, comprising at least one of the polypeptide sequences SEQ ID NO: 1, 2 or 3 or having a functionally equivalent polypeptide sequence which is at least 80% identical to SEQ ID NO: 1, 2 or 3.
摘要翻译:一种通过在还原酶的存在下还原式(1)的化合物,从通式(1)的不饱和烯烃衍生物中酶制备通式(2)的化合物的方法,所述方法包括至少一种多肽序列 具有与SEQ ID NO:1,2或3至少80%相同的功能等同多肽序列的SEQ ID NO:1,2或3。
摘要:
The invention relates to a lipase variant which can be prepared by carrying out, on the amino acid sequence of a starting lipase selected from the lipase homologous family I.1 or I.2, at least one amino acid substitution in those positions which correspond to the positions 17, 29, 30, 52, 86, 117, 122, 160, 163, 167, 265, 266, 286, 289 in the prototype lipase sequence SEQ ID NO: 1.
摘要翻译:本发明涉及脂酶变体,其可通过在选自脂肪酶同源家族I.1或I.2的起始脂肪酶的氨基酸序列上进行至少一个氨基酸取代而制备, 原型脂肪酶序列SEQ ID NO:1中的位置17,29,30,25,66,117,122,160,163,167,265,266,286,289。
摘要:
A method for enzymatic preparation of compounds of the general formula (2) from unsaturated alkene derivatives of the general formula (1) by reducing a compound of the formula (1) in the presence of a reductase, comprising at least one of the polypeptide sequences SEQ ID NO: 1, 2 or 3 or having a functionally equivalent polypeptide sequence which is at least 80% identical to SEQ ID NO: 1, 2 or 3.
摘要翻译:一种通过在还原酶的存在下还原式(1)的化合物,从通式(1)的不饱和烯烃衍生物中酶制备通式(2)的化合物的方法,所述方法包括至少一种多肽序列 具有与SEQ ID NO:1,2或3至少80%相同的功能等同多肽序列的SEQ ID NO:1,2或3。
摘要:
A process for preparing urethane-containing (meth)acrylic esters (U) by reacting a urethane-containing alcohol (A) with a (meth)acrylic ester of a saturated alcohol (G) in the presence of at least one polymerization inhibitor (P) with an enzyme (E) as a catalyst in a reactor, wherein the (meth)acrylic ester of a saturated alcohol (G) and the urethane-containing alcohol (A) are passed continuously through at least one fixed bed reactor filled with an immobilized enzyme (E) as a catalyst.
摘要:
A process for the racemisation of an optically active alpha-hydroxyketone by incubating said alpha-hydroxyketone in the presence of an acetoin racemase of Lactobacillus.
摘要:
The invention relates to novel proteins from Pseudomonas glumae, having esterase activity, in particular butynol I esterase activity, to nucleic acid sequences coding therefor, to expression cassettes, vectors and recombinant microorganisms; to methods for preparing said proteins and to the use thereof for enzymic, in particular enantioselective enzymic, ester hydrolysis or transesterification of organic esters.
摘要:
A description is given of the use of at least one compound of the formula I where R1, R2, R3 and R4 independently of one another are H or C1-C6-alkyl; and the use of a compound of the formula I for medical use.