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A. Chemoenzymatic synthesis of jorunnamycin A (7) and saframycin A (8) featuring construction of their pentacyclic core with SfmC. B. Chemoenzymatic synthesis of dihydroartemisinic acid (9) via enzymatic cyclization of 12 with amorphadiene synthase (ADS). C. Chemoenzymatic synthesis of kainic acid (15) via oxidative cyclization of prekainic acid (16) with DsKabC.
