结构结构多样的γ-和δ-内酯是利用粘质沙雷氏菌(Sm CR V4)中的一种工程化羰基还原酶有效地立体选择性合成的。与野生型酶相比,Sm CR V4表现出更高的活性(最高达500倍)和对14种γ-/δ-酮酸和酯的热稳定性,催化效率提高了110倍(k cat / K m)对4-氧代十二烷甲酸甲酯。证明了烷基和芳香族γ-和δ-内酯的制备合成,其ee率为95%-> 99%,收率为78%-90%。最高时空产量为1175 g L -1 d -1,达到了(R)-γ-癸内酯
结构结构多样的γ-和δ-内酯是利用粘质沙雷氏菌(Sm CR V4)中的一种工程化羰基还原酶有效地立体选择性合成的。与野生型酶相比,Sm CR V4表现出更高的活性(最高达500倍)和对14种γ-/δ-酮酸和酯的热稳定性,催化效率提高了110倍(k cat / K m)对4-氧代十二烷甲酸甲酯。证明了烷基和芳香族γ-和δ-内酯的制备合成,其ee率为95%-> 99%,收率为78%-90%。最高时空产量为1175 g L -1 d -1,达到了(R)-γ-癸内酯
Escherichia coli. SmCR could catalyze the asymmetric reduction of long-chain keto acids/esters containing remote carbonyl groups, such as 4-oxo- and 5-oxodecanoic acids, yielding chiral γ- and δ-decalactones with high enantiopurity (up to 99% ee). This is the first report of enzymatic synthesis of (R)-γ- and (R)-δ-decalactones starting from γ-, δ-keto acids using free enzymes.
The present invention relates to a compound of the Formula (I)): or pharmaceutically acceptable salt thereof, wherein the symbols are as defined in the specification; a pharmaceutical composition comprising the same, a method for treating or preventing viral infections, inflammation, dry eye, central nervous disorders, cardiovascular diseases, cancer, obesity, diabetes, muscular dystrophy, and hair loss.
Efficient Stereoselective Synthesis of Structurally Diverse γ‐ and δ‐Lactones Using an Engineered Carbonyl Reductase
作者:Meng Chen、Xiao‐Yan Zhang、Chen‐Guang Xing、Chao Zhang、Yu‐Cong Zheng、Jiang Pan、Jian‐He Xu、Yun‐Peng Bai
DOI:10.1002/cctc.201900382
日期:2019.6.6
efficiently synthesized stereoselectively using an engineered carbonyl reductase from Serratia marcescens (SmCRV4). SmCRV4 exhibited improved activity (up to 500‐fold) and thermostability toward 14 γ‐/δ‐keto acids and esters, compared with the wild‐type enzyme, with 110‐fold enhancement in catalytic efficiency (kcat/Km) toward methyl 4‐oxodecanoate. The preparative synthesis of alkyl and aromatic γ‐ and δ‐lactones
结构结构多样的γ-和δ-内酯是利用粘质沙雷氏菌(Sm CR V4)中的一种工程化羰基还原酶有效地立体选择性合成的。与野生型酶相比,Sm CR V4表现出更高的活性(最高达500倍)和对14种γ-/δ-酮酸和酯的热稳定性,催化效率提高了110倍(k cat / K m)对4-氧代十二烷甲酸甲酯。证明了烷基和芳香族γ-和δ-内酯的制备合成,其ee率为95%-> 99%,收率为78%-90%。最高时空产量为1175 g L -1 d -1,达到了(R)-γ-癸内酯