Steroids. VII.<sup>1</sup> Contribution to the Bromination of ▵<sup>4</sup>-3-Ketosteroids and a New Partial Synthesis of the Natural Estrogens
作者:Carl Djerassi、G. Rosenkranz、J. Romo、St. Kaufmann、J. Pataki
DOI:10.1021/ja01166a055
日期:1950.10
Bolt,C.C.; Zeelen,F.J., Recueil des Travaux Chimiques des Pays-Bas, 1973, vol. 92, p. 1267 - 1271
作者:Bolt,C.C.、Zeelen,F.J.
DOI:——
日期:——
Photochemische Reaktionen. 34. Mitteilung. Die Photoisomerisierung von 3-Oxo-?1;4-Steroiden in Dioxanl�sung. 3,11-Dioxo-17?-acetoxy-?1;4-androstadien und 3-Oxo-17?-acetoxy-?1;4;9,11-androstatrien
作者:Lj. Lorenc、M. Miljkovi?、K. Schaffner、O. Jeger
DOI:10.1002/hlca.19660490315
日期:——
16 in dioxane solution produced the virtually quantitative isomerizations 3 11 (Chart 3) and 7 16 17 (Chart 6). These conversions are consistent with the previously established general scheme a b c d e (Chart 1). By analogy with these results, it is suggested that the photo-isomers 9 and 10 of O-acetylprednisone (8) represent products resulting from multiple photorearrangements rather than from direct