Über die Spaltung der Doppelbindung im Neoergosterol

✍ Scribed by W. E. Bachmann; M. P. Cava; André S. Dreiding

• Publisher: John Wiley and Sons
• Year: 1959
• Tongue: German
• Weight: 268 KB
• Volume: 42
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.19590420607

✦ Synopsis

Abstract

By a careful sidechain cleavage of neoergosteryl acetate, 3,β‐hydroxy‐ar, B‐bisnorcholanaldehyde could be isolated as its crystalline dimethyl acetal (Va). Acetylation and bromination afforded 3β‐acetoxy‐20‐bromo‐ar, B‐bisnorcholanaldehyde(VI), which was converted to the 2,4‐dinitrophenylhydrazone of 3β‐acetoxy‐ar, B‐Δ17:20‐bisnorcholenaldehyde (VII).