Abstract
Since the discovery of penicillin, the vast majority of new natural products possessing the β-lactam ring structure have fallen into that family of compounds known as β-lactam antibiotics. At present the only natural products possessing a β-lactam and not normally associated with this group are the pachystermines (1), the wild-fire toxin (2), and a related antimetabolite (3). The bleomycins and phleomycins (4) were also originally thought to possess a β-lactam unit, but this is now known not to be the case (5).
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References
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Southgate, R., Elson, S. (1985). Naturally Occurring β-Lactams. In: Herz, W., Grisebach, H., Kirby, G.W., Tamm, C. (eds) Fortschritte der Chemie organischer Naturstoffe / Progress in the Chemistry of Organic Natural Products. Fortschritte der Chemie organischer Naturstoffe / Progress in the Chemistry of Organic Natural Products, vol 47. Springer, Vienna. https://doi.org/10.1007/978-3-7091-8790-6_1
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