The Biosynthesis of Spinosyn in <i>Saccharopolyspora </i><i>spinosa</i>: Synthesis of the Cross-Bridging Precursor and Identification of the Function of SpnJ
作者:Hak Joong Kim、Rongson Pongdee、Qingquan Wu、Lin Hong、Hung-wen Liu
DOI:10.1021/ja076580i
日期:2007.11.28
of the spinosyn aglycone suggests an intriguing biosynthetic pathway for its formation, which is expected to be initiated by the oxidation of the 15-OH group of the mature polyketide precursor and may involve a Diels-Alder-type [4 + 2] cycloaddition reaction. Three possible routes, which differ in the order of oxidation and cyclization events, can be envisioned for the biosynthesis of the core structure
作者:Hak Joong Kim、Sei-hyun Choi、Byung-sun Jeon、Namho Kim、Rongson Pongdee、Qingquan Wu、Hung-wen Liu
DOI:10.1002/anie.201407806
日期:2014.12.1
significantly elevated level of structural complexity that renders the chemical synthesis of these naturalproducts challenging. We report herein a totalsynthesis of the widely used polyketide insecticide spinosyn A by exploiting the prowess of both chemical and enzymatic methods. As more polyketide biosynthetic pathways are characterized, this chemoenzymaticapproach is expected to become readily adaptable