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Seven new prenylated indole alkaloids, taichunamides A–G, were isolated from the fungus Aspergillus taichungensis (IBT 19404). Taichunamides A and B contained an azetidine and 4‐pyridone units, respectively, and are likely biosynthesized from notoamide S via (+)‐6‐epi‐stephacidin A. Taichunamides C and D contain endoperoxide and methylsulfonyl units, respectively. This fungus produced indole alkaloids...
Ein enger Tunnel: Struktur‐ und biochemische Analyse der Tautomycetin‐Thioesterase (TE) lieferten die erste hoch aufgelöste Struktur einer TE mit einer linearen Kette als Endstück in der Polyketidbiosynthese und zeigten, dass das Enzym stereoselektiv ist und eine engere Substratkammer aufweist als Makrolactone bildende Thioesterasen.
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