RuO4-mediated oxidative polycyclization of linear polyenes. A new approach to the synthesis of the bis-THF diol core of antitumour cis–cis adjacent bis-THF annonaceous acetogenins
作者:Vincenzo Piccialli、Teresa Caserta、Lucia Caruso、Luigi Gomez-Paloma、Giuseppe Bifulco
DOI:10.1016/j.tet.2006.08.038
日期:2006.11
threo-cis-threo-cis-threo relative configuration, along with a mixture of the corresponding bis-THF ketols. These compounds can be seen as useful intermediates in the synthesis of the bis-THF diol core of adjacent bis-THF antitumour acetogenins possessing a threo-cis-threo-cis-erythro relative configuration, such as rolliniastatiin-1, membranacin, rollimembrin and membrarollin. Oxidation of the related all-trans
已经研究了具有重复的1,5-二烯结构基序的某些选定的线性多烯的RuO 4催化的氧化多环化。全反式三烯(E,E,E)-乙酸henicosa-2,6,10-三烯基酯制得的预期双-四氢呋喃基二醇产物具有苏-顺-苏-苏-顺-苏式相对构型,以及相应的双-THF酮醇的混合物。这些化合物可以被看作是在相邻的双- THF抗肿瘤内酯具有一个的双THF二醇芯的合成中有用的中间体苏-顺式-苏式-顺式-赤相对构型,如rolliniastatiin-1,membranacin,rollimembrin和membrarollin。相关的全反式四烯(E,E,E,E)-乙酸pentacosa-2,6,10,14-四烯基酯的氧化反应在第二个环化步骤中停止,给出了苏-顺-苏-顺式的混合物-苏式双-THF二醇和相应的酮醇产物。三烯的氧化(E,Z,E)-乙酸12-乙酰氧基-十二烷基-2,6,10-三烯基酯停止在单环化水平上无法提