ChemInform Abstract: Chiral Synthesis of the C3-13 Segment of Epothilone A.
โ Scribed by Z.-Y. LIU; C.-Z. YU; J.-D. YANG
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 32 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0931-7597
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โฆ Synopsis
Chiral Synthesis of the C 3-13 Segment of Epothilone A.
-Epothilones represent a new class of macrolides showing all the biological effects of taxol, but their structure is totally different. On route to an epothilone A synthesis, the preparation of the C 3 -C 13 segment (V) from inexpensive geraniol (I) is reported.
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Synthesis of the C(11)-C(20) Segment of the Cytotoxic Macrolide Epothilone B. -The fragment (VIII) is synthesized from (S)-malic acid (I) via 2 Wittig reactions and a Sharpless asymmetric epoxidation. -
Synthesis Studies Directed Towards Epothilone A: Enantioselective Synthesis of a C 7 -C 15 Carboxaldehyde Segment. -Based on the diastereoselective alkylation of Oppolzer's sultam (III) with the iodide (II), the desired (S)-product (IV) is prepared and readily transformed to the C7-C15 segment of e