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A Highly Stereoselective Synthesis of C(11)-Functionalized Aromatic Steroids by an Intramolecular Benzocyclobutene-Olefin -Cycloaddition. Preliminary Communication |
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| Authors: | Wolfgang Oppolzer,Martin Petrzilka,Kurt B ttig |
| Affiliation: | Wolfgang Oppolzer,Martin Petrzilka,Kurt Bättig |
| 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). |
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