作者:Michael Klein、Manfred Zabel、Günther Bernhardt、Burkhard König
DOI:10.1021/jo035250n
日期:2003.11.1
The preparation of cyclic 10-membered tetrahydroxy enediynes is reported. The synthesis starts from tartaric acid and allows the control of the relative stereochemistry. Acetal protection of the 2,3-hydroxy groups stabilizes the enediyne during synthesis. Removal of the cyclic protecting group with EtSH/TFA transforms the stable compounds into reactive enediynes, and the rate constants of their cyclization
报道了环状的10元四羟基烯二炔的制备。合成从酒石酸开始,并允许控制相对的立体化学。2,3-羟基的缩醛保护可在合成过程中稳定烯二炔。用EtSH / TFA除去环状保护基会将稳定的化合物转变为反应性烯二炔,并在苯和水中确定了其环化的速率常数。在体外测定了活化化合物对肿瘤细胞的细胞毒性,但与顺铂相比,其生长抑制作用较弱。