An Improved Approach to Chiral Cyclopentenone Building Blocks. Total Synthesis of Pentenomycin I and Neplanocin A
作者:John K. Gallos、Christos I. Stathakis、Stefanos S. Kotoulas、Alexandros E. Koumbis
DOI:10.1021/jo050987t
日期:2005.8.1
An improved approach to enantiomerically pure hydroxylated cyclopentenones is reported here, which involves intramolecular nitrone cycloaddition of sugar-derived chiral pent-4-enals and hex-5-en-ones-2 followed by N−O bond cleavage, quaternization of the amine thus produced, and finally oxidative elimination of the amino group. Synthesis of pentenomycin I and neplanocin A is described following this
本文报道了一种对映体纯的羟基化环戊烯酮的改进方法,该方法涉及糖衍生的手性五-4-烯醛和六-5-烯一酮-2的分子内硝酮环加成,然后进行N-O键裂解,使胺季铵化产生,最后氧化消除氨基。按照该方法描述戊糖霉素I和奈普兰霉素A的合成。