We were able to show the predominant incorporation of a single enantiomer and intact incorporation of multiply labelled synthetic diketide precursors (14 and 16), which established the intermediacy of cyclopropanated diketide and led to our proposal for the unprecedented biological cyclopropanation, viaPKS (polyketide synthase) having a novel cyclopropanase domain, in the biosynthesis of FR-900848 (1).
我们能够显示出单一对映体的主要掺入和多重标记合成二酮酰胺前体(14 和 16)的完整掺入,从而确定了
环丙烷化二酮酰胺的中间体,并提出了在 FR-900848 的
生物合成过程中通过具有新型
环丙烷酶结构域的聚酮合成酶(PKS)进行前所未有的
生物环丙烷化的建议(1)。