Antitumor and antiviral compounds of marine origin.

摘要

The invention provides a composition according to the general formula: <CHEM> wherein R<1><-><6> are the same or different and are a hydrogen, lower alkyl, or lower acyl: and R<7><-><1><4> are the same or different and are single bonded hydrogen or hydroxy groups. Such compositions are derived from marine organisms (marine sponges) and exhibit antiviral and antitumor activity.