(+) and (−)-Goniofufurones, (+) and (−)-8-epi-goniofufurones have been synthesized from d-(−) and l-(+)-tartaric acids by the addition of ethyl lithiopropiolate to a chiral aldehyde intermediate as a key step, in which LDA is the best base compared to n-BuLi plus Lewis acid YCl3 (cat.).
(+)和(-)-Goniofufurones,(+)和(-)-8- Epi- goniofufurones是由d-(-)和l-(+)-
酒石酸通过将
硫代
丙酸乙酯添加至手性化合物而合成的醛中间体是关键步骤,其中
LDA是与
正丁基锂加
路易斯酸YCl 3(目录号)相比最好的碱。