作者:Jun Yin、Lili Kong、Cheng Wang、Yingbo Shi、Shujun Cai、Shuanhu Gao
DOI:10.1002/chem.201302163
日期:2013.9.23
(+)‐Fusarisetin A belongs to a group of acyl tetramic acid natural products that show potential anticancer activity. Equisetin, a biogenetically related acyl tetramic acid, contains the basic skeleton of (+)‐fusarisetin A. We proposed that equisetin and (+)‐fusarisetin A share a biosynthetic pathway that starts with naturally occurring (S)‐serine and an unsaturated fatty acid. In support of this hypothesis
(+)-Fusarisetin A属于一组具有潜在抗癌活性的酰基四酸天然产物。Equisetin是一种与生物遗传相关的酰基四酸,它包含(+)-fusarisetin A的基本骨架。我们提出了Equisetin和(+)-fusarisetin A共有一种生物合成途径,该途径从天然存在的(S)-丝氨酸和不饱和脂肪开始酸。为支持该假设,我们证明了涉及分子内Diels-Alder反应的环化序列,随后是聚烯酰氨基酸的Dieckmann环化,产生了equsetin。Mn III / O 2促进的马鞭草蛋白酶的好氧氧化 或通过可见光化学产生的活性氧(ROS)产生的过氧化富铁链霉菌素,可以很容易地还原为(+)-富沙糖链菌素A。