| 摘要 |
<p>A novel class of antitumour compounds has been recognised based on the isolation from a new marine microbe, strain PO13-046, belonging to the genus Actinomadura sp.), of a compound designated IB-00208. The class of the formulae (I) or (II) where R<1 >can be hydrogen, acyl, alkyl, alkenyl, aryl, benzyl, alkali metal, and/or sugar, and R<2 >and R<3 >can be hydrogen, alkyl, or together R<2 >and R<3 >form an unsaturated bond. Such compounds demonstrate an interesting activity several cancel cell lines and against Gram-positive bacteria.</p> |
