Synthesis of methyl derivatives of linear and angular thienocoumarins and thiopyranocoumarins
作者:P. Rodighiero、G. Pastorini、A. Chilin、A. Marotto
DOI:10.1002/jhet.5570350411
日期:1998.7
New linear and angular thienocoumarins and thiopyranocoumarins were synthesized. The key intermediates were appropriate methyl derivatives of 7-mercaptocoumarin, which were condensed with chloro-ketones or propargyl chloride. Thioethers were cyclized under various conditions in order to determine which methods produced the best yields of the desired thienocoumarins 15, 16, 17, 18, 22, 23, 24, 27 and
合成了新的线性和有角的硫杂香豆素和硫代吡喃香豆素。关键中间体是合适的7-巯基香豆素的甲基衍生物,将其与氯酮或炔丙基氯缩合。为了确定哪种方法能产生所需硫代香豆素15、16、17、18、22、23、24、27和硫代吡喃香豆素28和29的最佳收率,将硫醚在各种条件下进行环化。