Asymmetric synthesis of the synthons 1 and 3 are described. Absolute stereochemical reiationships in these intermediates have been established via chiral enolate and directed hydrogenation processes. From the standpoint of chemical synthesis, the polyether antibiotics present a formidable chal-
Total synthesis of the ionophore antibiotic X-206. Studies relevant to the stereoselective synthesis of the C(17)–C(26) synthon.
✍ Scribed by David A. Evans; Steven L. Bender
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- French
- Weight
- 262 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
A stereoselective synthesis of the keto-aldehyde 4, which embodies the structural features of the C(17)-C(26) section of the polyether X-206, is described.
Despite recent advances in asymmetric synthesis, the stereochemically complex polyether antibiotics remain as challenging targets for total synthesis. 1 Among the diverse members of this class of substances, X-2O62 merits special attention as a consequence of its general level of architectural complexity.
📜 SIMILAR VOLUMES
The asymmetric synthesis of the Cl-Cy ferensimycin synthon 3 is described. The absolute stereochemrcal relationships in this target structure were established through chn-al enolate methodology. As part of an ongoing effort to develop asymmetric carbon-carbon bond-forming reactions in the context of
Studies on the Total Synthesis of the Macrolide Antitumor Agent Rhizoxin. 2. Synthesis of the C14-C26 Segment.