A divergent approach to apoptolidin and FD-891: asymmetric preparation of a common intermediate
作者:Shu-Sin Chng、Jia Xu、Teck-Peng Loh
DOI:10.1016/s0040-4039(03)01173-0
日期:2003.6
Biologically active Apoptolidin and FD-891 have structural similarity in their macrocyclic cores. Asymmetric preparation of a common intermediate in the totalsynthesis of these two macrolides is presented. A modified Masuyama Sn-allylation was employed to control the relative stereochemistry in the synthesis of the intermediate.
A novel method for the preparation of differentially substituted phosphonoacetates and phosphonoacetamides using 4-DMAP catalyzed ester exchange reaction has been developed.
已开发出一种使用4-DMAP催化的酯交换反应制备差异取代的膦酰基乙酸酯和膦酰基乙酰胺的新方法。
A Dehydratase Domain in Ambruticin Biosynthesis Displays Additional Activity as a Pyran-Forming Cyclase
作者:Gesche Berkhan、Frank Hahn
DOI:10.1002/anie.201407979
日期:2014.12.15
Hydropyran rings are a common structural motif in reduced polyketides. Information on their biosynthetic formation and particularly the biochemicalcharacterization of the responsible enzymes has only been reported in few cases. The dehydratase domain AmbDH3 from the ambruticin polyketide synthase was investigated. Through in vitro assay of the recombinant domain with synthetically‐derived substrate