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PHOTOCHEMICAL ADDITION REACTIONS TO α,β‐UNSATURATED KETO‐STEROIDS
Author(s) -
CRABBÉ PIERRE,
CRUZ ALICIA,
IRIARTE JOSÉ
Publication year - 1968
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1968.tb08068.x
Subject(s) - cyclobutene , cyclobutane , chemistry , cycloaddition , enone , photochemistry , medicinal chemistry , ring (chemistry) , organic chemistry , catalysis
— Several examples of photochemical cycloaddition of olefins to α,β‐unsaturated ketones have been reported, but there are only a few cases of formation of substituted cyclobutane or cyclobutene rings through such ieactions[1–4]. We wish to report here photochemical addition reactions to positions 16 and 17 of the steroid nucleus, using the conjugated system of 3β‐hydroxypregna‐5,16‐dien‐20‐one acetate (1) as a substrate [5]. RESUMEN Han sido reportados algunos ejemplos de cicloadición fotoquímica de olefinas a cetonas conjugadas, pero hay pocos casos de formación de anillos ciclobutánicos o ciclobuténicos mediante estas reacciones.