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1 article(s) from Knobloch, Tobias

Unprecedented deoxygenation at C-7 of the ansamitocin core during mutasynthetic biotransformations

Tobias Knobloch,
Gerald Dräger,
Wera Collisi,
Florenz Sasse and
Andreas Kirschning

Beilstein J. Org. Chem. 2012, 8, 861–869, doi:10.3762/bjoc.8.96

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Scheme 1: Summary of ansamitocin biosynthesis and structure of the related ansamycin antibiotic geldanamycin (...

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Figure 1: Fermentation products, proansamitocin (2) and derivatives 7–9, of the Asm12 and Asm21-blocked (chlo...

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Scheme 2: Mutasynthetic preparation of ansamitocin derivatives 11a–h by using 3-amino-5-chlorobenzoic acid (10...

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Scheme 3: Mutasynthetic biotransformation of proansamitocin derivatives 9a and 9b with AHBA(−) mutant A. pret...

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Scheme 4: Fermentation products 14–16 of acyl transferase Asm19-blocked mutant A. pretiosum HGF059 (Δasm19) (...

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Scheme 5: Possible mechanism of deoxygenation at C-7 of proansamitocin derivatives.

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Published 11 Jun 2012

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