Recent reports of the syntheses of heterocyclic natural products that are isolated from bacteria, fungi, plants and marine sources are discussed. This review emphasizes new developments in synthetic methodology and strategies for such products, and the potential biological activity of the metabolites that are described is highlighted. Concepts of conformational analysis, stereoelectronic control and reaction mechanism are all used in the development of new methodology. Despite the variety and scope of synthetic efforts, the synthesis of new organic molecules and the improved synthesis of known molecules remains a major task for organic chemists.
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