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Alpha-acetyl cardenolide tridigitoxosides prodn - - by reacting tridigitoxosides with dialkylacetamide acetals and hydr
Alpha-acetyl cardenolide tridigitoxosides prodn - - by reacting tridigitoxosides with dialkylacetamide acetals and hydr
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机译:通过使三指氧苷与二烷基乙酰胺缩醛和氢反应来制备α-乙酰基烯醇内酯三指氧苷
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摘要
alpha-Acetyl derivs. of cardenolide tridigitoxosides are produced by reacting cardenolide tridigitoxosides with dialkylacetamide dialkyl acetals (pref. dimethylacetamide dimethyl acetal) in an inert solvent and subsequently hydrolysing in acidic medium. Acylation takes place selectively in the 3-posn. of the terminal digitoxose residue and almost pure products are obtained in high yields. The products (e.g. alpha-acetyldigoxin, alpha-acetyldigitoxin) have cardioactivity.
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