biocatalytic methods for the stereoselectivereduction of cyclic prochiral 1,3-diketones for the production of optically active β -hydroxyketones and/or 1,3-diols. The recombinant ketoreductase KRED1-Pglu (formulated as purified catalyst) and whole cells of wild type Escherichia coli DE3 Star were used as biocatalysts, displaying different and sometimes complementary stereoselectivity, thus allowing the preparation
作者:Ya-Jian Hu、Chen-Chen Gu、Xin-Feng Wang、Long Min、Chuang-Chuang Li
DOI:10.1021/jacs.1c09637
日期:2021.10.27
bond formation. Furthermore, the existence of Taxol-resistant tumors and side effects of Taxol make the development of new approaches to synthesize Taxol and its derivatives highly desirable. Here, we report the asymmetrictotalsynthesis of Taxol using a concise approach through 19 isolated intermediates. The synthetically challenging eight-membered ring was constructed efficiently by a diastereoselective
First Stereoselective Synthesis of the Versatile Chiral Building Block (7aR)-5,6-Dihydro-7a-methyl-1H-indene-2,7(4H,7aH)-dione
作者:Zhi-Liang Wei、Zu-Yi Li、Guo-Qiang Lin
DOI:10.1055/s-2000-8196
日期:——
A versatile chiral building block (7aR)-5,6-dihydro-7a-methyl-1H-indene-2,7(4H,7aH) -dione (4) was firstly enantiomerically synthesized from the microbial transformation ketol product 6 in 61.3% overall yield and over 96% ee.