Synthetic studies on the compounds related to neocarzinostatin chromophore. 2. Synthesis of the open-chain (E)- and (Z)-dienediyne systems and its application to the synthesis of a strain-released cyclic analogue
作者:Kazuhiko Nakatani、Katsuko Arai、Kaoru Yamada、Shiro Terashima
DOI:10.1016/s0040-4020(01)92247-1
日期:1992.4
The “double coupling” reaction of the (E)- and (Z)-dienol ditriflates (5 and 6) with various propargyl alcohols was found to give the (E)- and (Z)-dienediyne diols, the open-chain analogues of neocarzinostatin chromophore, stereospecifically. Those (E)- and (Z)-dienediyne diols exhibited comparable cytotoxicity against P388 murine leukemia. The “single coupling” reaction of 6 took place preferentially
“双耦合”(的反应ë) -和(Ž()-dienol ditriflates 5和6)与各种炔丙醇被发现,得到(ë) -和(Ž)-dienediyne二醇,开链类似物碳素抑制素生色团的立体定位。这些(E)-和(Z)-二烯二炔二醇对P388鼠类白血病表现出可比的细胞毒性。的“单耦合”反应6发生优先在所述外-环位置得到单烯醇三氟甲磺酸酯,其可以通过与乙炔的第二次偶联反应进一步加工成二烯二炔化合物。该合成方案的应用可以提供新颖的,可释放应变的环状二烯二炔乙缩醛(33)。