CYP505E3: A Novel Self‐Sufficient ω‐7 In‐Chain Hydroxylase
作者:Mpeyake Jacob Maseme、Alizé Pennec、Jacqueline Marwijk、Diederik Johannes Opperman、Martha Sophia Smit
DOI:10.1002/anie.202001055
日期:2020.6.22
The self‐sufficientcytochromeP450 monooxygenase CYP505E3 from Aspergillus terreus catalyzes the regioselective in‐chain hydroxylation of alkanes, fatty alcohols, and fatty acids at the ω‐7 position. It is the first reported P450 to give regioselective in‐chain ω‐7 hydroxylation of C10–C16 n ‐alkanes, thereby enabling the one step biocatalytic synthesis of rare alcohols such as 5‐dodecanol and 7‐tetradecanol
Lipase-catalyzed transesterification in organic solvents: Preparation and enantiodifferentiation of optically enriched 4(5)-alkylated 1,4(1,5)-olides
作者:Manfred Huffer、Peter Schreier
DOI:10.1016/s0957-4166(00)82013-3
日期:1991.1
Porcine pancreatic lipase (PPL) catalyzed intramolecular transesterification of n-propyl esters of 4(5)-hydroxyalkanoic acids (C5-C12) in diethyl ether (20-degrees-C) yielded (S)-4-alkylated 1,4-olides of high optical purity (ee > 80%) and optically pure (R)-4-hydroxyalkanoic-n-propylesters, but exhibited low enantioselectivity for (S)-5-alkylated 1,5-olides (ee = 10-20%). The chiral analysis of 4(5)-hydroxyalkanoic esters was performed by HRGC and HPLC after their derivatization with (R)-(+)-1-phenylethylisocyanate, (S)-O-acetyllactic acid chloride, and (R)-(+)-alpha-methoxy-alpha-trifluoromethylphenylacetic acid chloride. The enantiodifferentiation of 1,4(1,5)-olides was achieved by HPLC on a chiral phase (ChiraSpher) using an on-line optical rotation detector (ChiraMonitor).
THIJS L.; WAANDERS P. P.; STOKKINGREEF E. H. M.; ZWANENBURG B., REC. TRAV. CHIM. PAYS-BAS, 105,(1986) N 9, 332-337
作者:THIJS L.、 WAANDERS P. P.、 STOKKINGREEF E. H. M.、 ZWANENBURG B.