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. Author manuscript; available in PMC: 2019 Sep 19.
Published in final edited form as: Nat Prod Rep. 2018 Sep 19;35(9):847–878. doi: 10.1039/c8np00013a

Fig. 7.

Fig. 7

A two-electron reductive release of the aldehyde pre-azinomycin B precedes tautomerization to an enol that is stabilized through conjugation with the adjacent carbonyl, the product of threonine alcohol oxidation by AziD2, a putative acyl-CoA dehydrogenase.