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Oxidation of pentalenolactone D (8) and neopentalenolactone D (9). A) Conversion of pentalenolactone D (8) to pentalenolactone E (15) and pentalenolactone F (16) catalyzed by PenD, PntD, or PtlD. B) Epoxidation of 15 to 16 catalyzed by PenD or PntD. C) Oxidation of neopentalenolactone D (9) catalyzed by PtlD, PenD, or PntD.
