## Abstract The racemic __cis__‐__anti__‐__trans__‐steroids **9** to **11** have been synthesized in a highly stereoselective manner starting from 4‐methoxybenzocyclobutene carboxylic acid __via__ the key step **8** → **9**. (__cf. Scheme 2__).
✦ LIBER ✦
A concise synthesis of a highly functionalized C-aryl taxol analog by an intramolecular Heck olefination reaction
✍ Scribed by John J. Masters; David K. Jung; William G. Bornmann; Samuel J. Danishefsky; Susan de Gala
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- French
- Weight
- 235 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
A palladium(O) catalyzed intramolecular Heck olefinatbn used to establish the Cl O-Cl 1 connection in a highly functbnalized taxane analog is described.
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## Abstract Electron‐withdrawing substituents in the meta position of the aniline moiety and any position of the pyridine ring are unfavorable in this reaction.