Stereospecificity of Ketoreductase Domains of the 6-Deoxyerythronolide B Synthase
作者:Roselyne Castonguay、Weiguo He、Alice Y. Chen、Chaitan Khosla、David E. Cane
DOI:10.1021/ja0753290
日期:2007.11.1
6-DeoxyerythronolideBsynthase (DEBS) is a modular polyketide synthase (PKS) responsible for the biosynthesis of 6-dEB (1), the parent aglycone of the broad spectrum macrolide antibiotic erythromycin. Individual DEBS modules, which contain the catalytic domains necessary for each step of polyketide chain elongation and chemical modification, can be deconstructed into constituent domains. To better
AnN,N′-Dioxide/In(OTf)3 Catalyst for the Asymmetric Hetero-Diels–Alder Reaction Between Danishefsky's Dienes and Aldehydes: Application in the Total Synthesis of Triketide
Frontiers and Opportunities in Chemoenzymatic Synthesis
作者:Jonathan D. Mortison、David H. Sherman
DOI:10.1021/jo101124n
日期:2010.11.5
Natural product biosynthetic pathways have evolved enzymes with myriad activities that represent an expansive array of chemical transformations for constructing secondary metabolites. Recently, harnessing the biosynthetic potential of these enzymes through chemoenzymatic synthesis has provided a powerful tool that often rivals the most sophisticated methodologies in modern synthetic chemistry and provides new opportunities for accessing chemical diversity. Herein, we describe our research efforts with enzymes from a broad collection of biosynthetic systems, highlighting recent progress in this exciting field.
Enantiospecific synthesis of tetrasubstituted δ-lactones
作者:Annabel L. Wilkinson (née Cutter)、Ulf Hanefeld、Barrie Wilkinson、Peter F. Leadlay、James Staunton
DOI:10.1016/s0040-4039(98)02243-6
日期:1998.12
For investigations concerning the selectivity of polyketide synthases (PKSs) which have been rationally engineered through genetic techniques the synthesis of substituted δ-lactones is of great importance. An enantiospecific route towards eight of the possible sixteen stereoisomers was developed which is also readily adaptable for the introduction of alkyl modifications and isotopic labels.