Titanocene(III) chloride mediated radical induced addition-elimination route to the synthesis of racemic and optically active trisubstituted tetrahydrofurans: Formal synthesis of magnofargesin and 7′-epimagnofargesin
作者:P CHAKRABORTY、S K MANDAL、S C ROY
DOI:10.1007/s12039-016-1106-0
日期:2016.7
Titanocene(III) Chloride mediated radical induced synthesis of 4-benzylidene substituted tetrahydrofuran, a typical lignan skeleton, has been accomplished in good yield through addition-elimination route in racemic as well as in optically active forms. The method has been applied to the synthesis of furano lignans, magnofargesin (1) and 7′-epimagnofargesin (2) in optically active forms. Titanocene(III)
通过外消旋和旋光形式的加成-消除途径,已经成功地完成了钛茂新星(III)氯化物介导的自由基诱导的4-苄叉基取代的四氢呋喃(典型的木脂素骨架)的合成。该方法已被应用于呋喃木脂素的合成,magnofargesin(1)和7 ' -epimagnofargesin(2以光学活性形式)。 通过外消旋和旋光形式的加成-消除途径,已经成功地完成了钛茂新星(III)氯化物介导的自由基诱导的4-苄叉基取代的四氢呋喃(典型的木脂素骨架)的合成。该方法已用于合成光学活性形式的呋喃聚糖木脂素,厚朴素和7′-表脂素。