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Polyene Antibiotics. VII. Carbon-13 Nuclear Magnetic Resonance Evidence for Cyclic Hemiketals in the Polyene Antibiotics Amphotericin B, Nystatin A1, Tetrin A, Tetrin B, Lucensomycin, and pimaricin1,2

Polyene Antibiotics. VII. Carbon-13 Nuclear Magnetic Resonance Evidence for Cyclic Hemiketals in the Polyene Antibiotics Amphotericin B, Nystatin A1, Tetrin A, Tetrin B, Lucensomycin, and pimaricin1,2

R C Pandey, K L Rinehart Jr

J Antibiot (Tokyo). 1976 Oct;29(10):1035-42.

PMID: 1086913

Abstract:

Carbon magnetic resonance establishes conclusively that six polyene macrolide antibiotics containing keto groups (the heptaene amphotericin B, the tetraene-diene nystatin A1, and the tetraenes tetrin A, tetrin B, pimaricin, and lucensomycin) exist in the hemiketal form in solution. Their spectra all contain a hemiketal carbon's absorption near 97 ppm but lack a keto carbon's absorption near 210 ppm. The non-polyenic macrolide erythromycin, on the other hand, exists in the keto form.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP222310829	Carbonate ionophore VII		222310-82-9	Price

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