A tunable synthesis of indigoids: targeting indirubin through temperature
作者:James A. Shriver、Kaylie S. Kaller、Ally L. Kinsey、Katelyn R. Wang、Summer R. Sterrenberg、Madison K. Van Vors、Joshua T. Cheek、John S. Horner
DOI:10.1039/d2ra00400c
日期:——
with molybdenum hexacarbonyl and cumyl peroxide, proceed through an indoxyl intermediate to produce significant amounts of indirubin through a competing mechanism. Modulation of this system to lower temperatures allows for careful tuning, leading to selective production of indirubins in a general process. A systematic assay of indoles show that electron deficient indoles work well when substituted at the
Exploring the biocatalytic scope of a bacterial flavin-containing monooxygenase
作者:Ana Rioz-Martínez、Malgorzata Kopacz、Gonzalo de Gonzalo、Daniel E. Torres Pazmiño、Vicente Gotor、Marco W. Fraaije
DOI:10.1039/c0ob00988a
日期:——
A bacterial flavin-containing monooxygenase (FMO), fused to phosphite dehydrogenase, has been used to explore its biocatalytic potential. The bifunctional biocatalyst could be expressed in high amounts in Escherichia coli and was able to oxidize indole and indole derivatives into a variety of indigo compounds. The monooxygenase also performs the sulfoxidation of a wide range of prochiral sulfides, showing moderate to good enantioselectivities in forming chiral sulfoxides.
Enzymatic Approach for the Biosynthesis of IndigoidDyes: A stepwise laboratory evolution of P450 enzyme is developed and used to establish an environmentally benign enzymatic approach for the biosynthesis of indigoiddyes from indole derivatives with high isolation yields, improving upon existing methods.