37772-32-0Relevant academic research and scientific papers
A synthetic approach towards stoloniferones: Synthesis of 11-acetyl-24-desmethyl-stoloniferone C
Di Filippo, Marcello,Izzo, Irene,Raimondi, Sandra,De Riccardis, Francesco,Sodano, Guido
, p. 1575 - 1577 (2007/10/03)
The synthesis of 11α-acetoxy-5β,6β-epoxycholest-2-en-1-one, a compound containing the nuclear functionalities of the stoloniferones, is described starting from dihydrocholesterol.
Remote functionalization by tandem radical chain reactions
Wiedenfeld, David
, p. 339 - 347 (2007/10/03)
Normal radical relay chlorination of cholestan-3α-ol directed by an attached m-iodobenzoate ester group affords a 9α-chloro steroid, but when the same reaction is conducted in the presence of an excess of CBr4 the product is a 9α-bromo steroid. Similarly, when the same radical relay reaction is carried out in the presence of an excess of (SCN)2 rather than CBr4, the product is a 9α-thiocyano steroid. Several other examples of these reactions have been developed. These tandem remote functionalization reactions succeed because an intramolecular hydrogen abstraction by a complexed-chlorine atom generates a specific substrate radical in each case. Copyright 1997 by the Royal Society Chemistry.
Chemical degradation of steroid side chains. Efficient conversion of cholestanol to corticosteroid intermediates.
Breslow,Link
, p. 4145 - 4148 (2007/10/02)
17-Chlorosteroids, produced by template-directed halogenation of 9-fluoro 11-oxygenated cholestanols that are themselves produced by template methods, are converted to their 17-keto analogs in high yields (85-91%) after HCl elimination with DBU, followed by ozonolysis.
THE THIOXANTHONE SYSTEM AS A TEMPLATE IN FREE RADICAL RELAY CHLORINATION OF A STEROID
Breslow, Ronald,Guo, Tao
, p. 3187 - 3188 (2007/10/02)
The 3-α-cholestanyl ester of thioxanthone-3-carboxylic acid undergoes selective chlorination of the steroid C-9 carbon by a radical relay mechanism directed by the thioxanthone template.
High Pressure Liquid Chromatography of Sterol Benzoates
Morisaki, Masuo,Ikekawa, Nobuo
, p. 865 - 871 (2007/10/02)
The high pressure liquid chromatographic behavior of forty sterol benzoates on a Zorbax ODS reverse phase column and on a normal phase column of Zorbax SIL is desrcibed.Keywords-HPLC; sterol benzoate; cholestadienol; phytosterol.
