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A Di‐π‐Methane Rearrangement in the Photolysis of a 4‐Oxa‐steroidal α,β‐Unsaturated Enol‐lactone . Photochemical reactions VIII
Author(s) -
Vallet José Alberto,
Boix José,
Bonet JuanJulio,
Briansó Marie Claire,
Miravitlles Carlos,
Briansó José Luis
Publication year - 1978
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.19780610330
Subject(s) - chemistry , enol , photodissociation , methane , photochemistry , lactone , irradiation , enone , medicinal chemistry , organic chemistry , catalysis , physics , nuclear physics
The irradiation of 17β‐acetoxy‐4‐oxa‐1,5‐androstadien‐3‐one ( 12 ) yielded the two stereoisomeric spiro‐lactones 13 and 14 , which result from a di‐π‐methane photorearrangement. A third product, the oxa‐anthrasteroid 15 , was also isolated ( Scheme 3 ).