2,3-ALKYLIDENE-RHAMNOPYRANOSIDES AND PROCESS FOR PREPARING THEM

    公开(公告)号:ZA712827B

    公开(公告)日:1972-01-26

    申请号:ZA712827

    申请日:1971-04-30

    Applicant: HOECHST AG

    Abstract: 1345388 Convallatoxin derivatives FARBWERKE HOECHST AG 30 April 1971 [2 May 1970] 12427/71 Heading C2U The invention comprises compounds of formula (wherein R 1 and R 2 are each C 1-4 alkyl, or together with the intervening carbon atom form a carbocyclic or heterocyclic ring; and R 3 is CHO or CH 2 OH) and their preparation from convallatoxin by reaction with R 1 R 2 C(OR 4 ) 2 (where R 4 is C 1-4 alkyl), optionally followed by reduction of 19-oxo to hydroxy. The inventive compounds are said to be cardioactive, and may be made up with carriers into pharmaceutical compositions for oral and parenteral administration.

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