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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
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Organic Low-Molecular-Weight Compounds And Preparation Thereof
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BE586438A1959-01-121960-01-11Procédé de préparation de 18,20-cyclo-20-oxo-21-nor-prégnanes
BE586438A
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