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Ihara Chemical Industry Co Ltd
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Ihara Chemical Industry Co Ltd
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Application filed by Ihara Chemical Industry Co LtdfiledCriticalIhara Chemical Industry Co Ltd
Priority to JP13628582ApriorityCriticalpatent/JPS5927886A/ja
Publication of JPS5927886ApublicationCriticalpatent/JPS5927886A/ja
Publication of JPH023794B2publicationCriticalpatent/JPH023794B2/ja
Method for preparing 17α-acetoxy-11β-(4-N, N-dimethylaminophyl)-19-Norpregna-4,9-diene-3, 20-dione, intermediates useful in the method, and methods for the preparation of such intermediates
The Chemistry of the Spiroaminoketal Side Chain of Solasodine and Tomatidine. I. 1 Improved Preparation of 3β-Acetoxy-5, 16-pregnadien-20-one and 3β-Acetoxy-5α-pregn-16-en-20-one from Solasodine and Tomatidine.