Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ciba GeigyfiledCriticalCiba Geigy
Publication of BE586438ApublicationCriticalpatent/BE586438A/en
C07J5/00—Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond
BE586438A1959-01-121960-01-11
Process for the preparation of 18,20-cyclo-20-oxo-21-nor-prégnanes
BE586438A
(en)