An iron(II)-mediated aminohalogenation of a cyclopentenyl N-tosyloxycarbamate provided new access to the key intermediate for the synthesis of (−)-agelastatin A (AA, 1), a potent antiproliferative alkaloid. The present synthetic endeavour offered an insight into the mechanism underlying the iron(II)-mediated aminohalogenation of N-tosyloxycarbamate, in which the radical properties of the N–iron intermediates in the redox states were operative.
一种铁(II)介导的环戊烯基N-对甲苯磺酰氧基氨基卤代反应提供了合成(-)-agelastatin A(AA,1)的关键中间体的新途径,该化合物是一种有效的抗增生生物碱。这项合成工作揭示了铁(II)介导的N-对甲苯磺酰氧基氨基卤代反应机理,其中N-铁中间体在氧化还原状态下具有自由基性质。