作者:Naoyoshi Maezaki、Naoto Kojima、Hiroaki Tominaga、Minori Yanai、Tetsuaki Tanaka
DOI:10.1021/ol034131r
日期:2003.5.1
Systematic synthesis of bis-THF ring cores, synthetic intermediates of adjacent bis-THF annonaceous acetogenins, has been achieved by asymmetric alkynylation and subsequent stereodivergent THF ring formation. The asymmetric alkynylation of alpha-tetrahydrofuranic aldehyde with (S)-3-butyne-1,2-diol derivatives gave good yields of erythro- and threo-adducts with very high diastereoselectivity. These
通过不对称的炔基化反应和随后的立体发散的THF环的形成,实现了双THF环核(相邻的双THF壬基产乙酸蛋白的合成中间体)的系统合成。α-四氢呋喃醛与(S)-3-butyne-1,2-二醇衍生物的不对称炔基化反应可得到很好的非对映体和对映体加合物,并具有很高的非对映选择性。通过两种一锅四氢呋喃环的形成,将这些加合物转化为四种类型的双-THF核。[反应:看文字]