170901-07-2Relevant articles and documents
A novel and efficient process to 13β-ethyl-gon-4-ene-3,11,17-trione
Liu,Su,Li
, p. 3113 - 3124 (1995)
A novel synthetic process to 13β-ethyl-gon-4-ene-3,11,17-trione with the total yield of 44% starting from 13β-ethyl-17β-hydroxy-3-methoxy-gona-2,5(10)-diene was described.
PROCESS FOR THE SELECTIVE ISOLATION, PURIFICATION AND SEPARATION OF MONOHYDROXYLATED 3,17-DIKETO-STEROID COMPOUNDS
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Page/Page column 12-14, (2008/06/13)
The subject of the present invention is a new process for the selective isolation, purification and separation of monohydroxylated 3,17-diketo-steroid compounds from a solution obtained preferably by microbiological way containing a mixture of steroid compounds via selective extraction, purification and selective crystallization of the steroid compounds by treatment of several solvents.