p-fluorocinnamoyl-CoA 、 丙二酰辅酶A-钠盐 在
Huperzia serrata type III polyketide synthase 作用下,
以
aq. phosphate buffer 为溶剂,
反应 12.0h,
以26%的产率得到1,7-bis(4-fluorophenyl)-5-hydroxyhepta-1,4,6-trien-3-one
参考文献:
名称:
Synthesis of Unnatural 2-Substituted Quinolones and 1,3-Diketones by a Member of Type III Polyketide Synthases from Huperzia serrata
摘要:
A curcuminoids, benzalacetone-, and quinolone-producing type III polyketide synthase (HsPKS3) from Huperzia serrata uniquely catalyzes the formation of unnatural 2-substituted quinolones and 1,3-diketones via head-to-head condensation of two completely different substrates. The broad range of substrate tolerance of HsPKS3 facilitates accessing structurally diverse 2-substituted quinolones and 1,3-diketones.
new acyl-CoA synthetase (ACS, UkaQ) with broad substrate specificity and an unusual catalytic mode was identified. Its stability and catalytic activity were remarkably improved by protein engineering, enabling it to synthesize a large variety of acyl-CoAs. In combination with permissive carboxylases, diverse extenderunits were synthesized and used to engineer the polyketidecarbonscaffold of antimycin
鉴定了一种具有广泛底物特异性和不寻常催化模式的新型酰基辅酶 A 合成酶(ACS,UkaQ)。蛋白质工程显着提高了其稳定性和催化活性,使其能够合成多种酰基辅酶 A。结合允许的羧化酶,合成了多种扩展单元,并用于设计抗霉素的聚酮化合物碳支架。