A carbonate-forming Baeyer-Villiger monooxygenase来源： 时间：六月 18, 2014, 8:45 a.m.
Despite the remarkable versatility displayed by flavin-dependent monooxygenases (FMOs) in natural product biosynthesis, one notably missing activity is the oxidative generation of carbonate functional groups. We describe a multifunctional Baeyer-Villiger monooxygenase, CcsB, which catalyzes the formation of an in-line carbonate in the macrocyclic portion of cytochalasin E. This study expands the repertoire of activities of FMOs and provides a possible synthetic strategy for transformation of ketones into carbonates.
Biosynthesis: A carbonate architect emerges
Carbonates are known to exist in natural products, but their biosynthesis has not been linked to any enzymes. An unusual fungal Baeyer-Villiger monooxygenase CcsB is now revealed to catalyze an in-line carbonate formation via a two-step mechanism of oxygen atom insertions.
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