## Abstract Spectroscopic analysis of a lanostane derivative, which was synthesized with a view to its application as an intermediate in chiral building block syntheses, is presented together with the conformational analysis of a secolanostane‐7‐8‐9,11‐tetraone.
New 9,10-seco-steroids from 11β-hydroxy-8β,9-epoxy-derivatives
✍ Scribed by Klaus Annen; Helmut Hofmeister; Henry Laurent; Arne Seeger; Rudolf Wiechert
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- French
- Weight
- 229 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
Reaction of readily available IIR-hydroxy-8B,9-epoxy-steroids with hydrogen fluoride-pyridine gave the corresponding 9.10-seco-derivatives in good yields. Ring cleavages between C-9 and C-IO of steroids by micro-organisms 1) or photo-2)H.H. Inhoffen, Angew. Chem. ;z, 875 (1960).
3)(a) D.
📜 SIMILAR VOLUMES
It is well known that S-ketoesters assume both ketonic and enolic structures by tautomerization and such keto-enol equilibria have hitherto been observed in a number of cyclic and acyclic enolizable 8-ketoesters. 1 However, most compounds reported so far exist only as an equilibrium mixture of the k