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Synthetische Verwendung von Epoxynitronen. II. Synthese von Steroid‐α‐methyliden‐γ‐lactonen
Author(s) -
Riediker Martin,
Graf Walter
Publication year - 1979
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19790620524
Subject(s) - chemistry , annulation , stereochemistry , steroid , organic chemistry , catalysis , biochemistry , hormone
Synthetic application of epoxynitrones. II. Syntheses of steroidal α‐methylidene‐γ‐lactones This communication describes the application of the epoxynitrone/CF 3 SO 3 SiR 3 → 1,2‐oxazine annelation‐reaction [1] to the syntheses of steroidal α‐methylidene‐γ‐lactones from olefines, e.g. 12 → 14a/b → 16a/b → 18a/b → 20 → 22 (Scheme 2) .