摘要:
A process for producing 3β, 14β-dihydroxyethianaldehyde is disclosed wherein the oxidation of the lactone ring of digitoxigenin-3-acetate is conducted with an alkaline periodate in the presence of a catalytic amount of ruthenium tetroxide obtained in situ by reacting RuO 2 hydrate or RuCl 3 with the alkaline periodate.
摘要:
Digitoxigenin and dihydrodigitoxigenin 3β-derivatives, a process for their preparation and pharmaceutical compositions containing same for the treatment of cardiovascular disorders such as heart failure and hypertension are disclosed.
摘要:
Seco-D steroid derivatives having the formula wherein R, R 1 , R 2 and R 3 have the meanings specified in the specification, useful as cardiovascular agents and pharmaceutical compositions containing same, are disclosed.
摘要:
Cyclopentanperhydrophenanthren-17-(hydroxy or alkoxy)-17-(aryl or heterocyclyl)-3β-derivatives of general formula (I): wherein: the symbol means that the hydrogen in position 5 can have an a or configuration; the symbol represents either a single or a double bond; and X, R, R 1 and R 2 have the meanings given in the description; a process for producing same and their use for the preparation of a medicament for the treatment of cardiavascular disorders such as heart failure and hypertension is disclosed.
摘要:
A process for producing 3β, 14β-dihydroxyethianaldehyde is disclosed wherein the oxidation of the lactone ring of digitoxigenin-3-acetate is conducted with an alkaline periodate in the presence of a catalytic amount of ruthenium tetroxide obtained in situ by reacting RuO 2 hydrate or RuCl 3 with the alkaline periodate.