Solid state photochemistry
Springer Online Journal Archives 1860-2000
Chemistry and Pharmacology
Summary UV irradiation of ethisterone (1) and norethisterone (2) in the solid state yielded one photoproduct each: 17,20-epoxy-17ξH-pregna-4,20-diene-3-one (3) and the dimerization product 17′-hydroxy-(13βH, 17′βH)-13,17-seco-[20, 21]bipregnayl-4,20,4′-trien-20′-in-3,17,3′-trione (4), respectively. Compounds3 and4 were characterized by their spectral and analytical data and further confirmed by the molecular packing of1 and2 in the crystal, as shown by X-ray crystallography.
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