摘要:
A method for producing optically active alcohols of formula (Ia) or (Ib), wherein R1, R2 are alkyl, alkenyl, aryl, or alkylaryl groups, which in turn can be mono-substituted or poly-substituted with alkyl, halogen, SH, SR2, OH, OR2, NO2, CN, CO, COOR2, NR2R3 or NR2R3R4+X, wherein R2, R3 and R4 independently of each other are H or a low-alkyl or low-alkoxy radical, and X- is a counterion, with the stipulation that R1 is not identical to R2, by reduction of the corresponding ketone, the reduction being performed with a dehydrogenase having the polypeptide sequence SEQ ID NO:2 or NO:4, or having a polypeptide sequence in which up to 25% of the amino acid radicals are modified relative to SEQ ID NO:2 or NO:4 by deletion, insertion, substitution, or a combination thereof.
摘要:
A method for producing optically active alcohols of formula (Ia) or (Ib), wherein R1, R2 are alkyl, alkenyl, aryl, or alkylaryl groups, which in turn can be mono-substituted or poly-substituted with alkyl, halogen, SH, SR2, OH, OR2, NO2, CN, CO, COOR2, NR2R3 or NR2R3R4+X, wherein R2, R3 and R4 independently of each other are H or a low-alkyl or low-alkoxy radical, and X- is a counterion, with the stipulation that R1 is not identical to R2, by reduction of the corresponding ketone, the reduction being performed with a dehydrogenase having the polypeptide sequence SEQ ID NO:2 or NO:4, or having a polypeptide sequence in which up to 25% of the amino acid radicals are modified relative to SEQ ID NO:2 or NO:4 by deletion, insertion, substitution, or a combination thereof.
摘要:
Die vorliegende Erfindung betrifft neuartige Mutanten mit Cyclase-Aktivität und deren Anwendung in einem Verfahren zur biokatalytischen Cyclisierung von Terpenen, wie insbesondere zur Herstellung von Isopulegol durch Cyclisierung von Citronellal; ein Verfahren zur Herstellung von Menthol sowie Verfahren zur biokatalytischen Umsetzung weiterer Verbindungen mit Terpenähnlichen Strukturmotiven.
摘要:
A process for preparing 1-butanol from butane by incubating a host organism having a functional P153 enzyme under elevated butane pressure in the presence of oxygen.
摘要:
Method for producing N-heterocyclic optically active alcohols of the formula (I), where R 1 represents alkyl groups which in turn can be monosubstituted or polysubstituted by alkyl, halogen, SH.SR 3 , OH, OR 3 , NO 2 , CN, CO, COOR 3 , NR 3 R 4 or NR 3 R 3 R 5+ X - , where R 3 , R 4 and R 5 independently of one another are H or a low-alkyl or low-alkoxy radical and X - is a counterion, R 2 is N-containing heteroaryl groups which in turn can be monosubstituted or polysubstituted by alkyl, halogen, SH.SR 3 , OH, OR 3 , NO 2 , CN, CO, COOR 3 , NR 3 R 4 or NR 3 R 3 R 5+ X - , where R 3 , R 4 and R 5 independently of one another are H or a low-alkyl or low-alkoxy radical and X - is a counterion, by reduction of the corresponding ketone, wherein the reduction is carried out using a dehydrogenase having the polypeptide sequence SEQ ID NO: 2 or NO: 4, or having a polypeptide sequence in which up to 25% of the amino acid radicals are modified in comparison with SEQ ID NO: 2 or NO: 4 by deletion, insertion, substitution or a combination thereof.