A synthetic route to 1,4-disubstituted tetrahydro-β-carbolines and tetrahydropyranoindoles <i>via</i> ring-opening/Pictet–Spengler reaction of aziridines and epoxides with indoles/aldehydes
作者:Imtiyaz Ahmad Wani、Gaurav Goswami、Sahid Sk、Abhijit Mal、Masthanvali Sayyad、Manas K. Ghorai
DOI:10.1039/c9ob02098e
日期:——
A simple and efficient synthetic route to various 1,4-disubstituted tetrahydro-β-carbolines and tetrahydropyrano[3,4-b]indoles in high yields and stereoselectivity via LiClO4-catalyzed SN2-type ring opening of aziridines and epoxides with indoles followed by p-toluenesulfonic acid (PTSA) catalyzed Pictet-Spengler reaction is described.
一种简单有效的合成路线,可通过LiClO4催化的氮丙啶和环氧化物的SN2型开环与吲哚,然后是吲哚,高产率和立体选择性地合成各种1,4-二取代的四氢-β-咔啉和四氢吡喃并[3,4-b]吲哚描述了对甲苯磺酸(PTSA)催化的Pictet-Spengler反应。