Convenient synthesis of linear pyrano[3,2-g]-, [2,3-g]- and angular pyrano[3,2-f]coumarins from 4[(1,1-dimethyl-2-propynyl)oxy]phenol
作者:V. Baldoumi、D.R. Gautam、K.E. Litinas、D.N. Nicolaides
DOI:10.1016/j.tet.2006.06.032
日期:2006.8
linear pyranocoumarins starting from 4-[(1,1-dimethyl-2-propynyl)oxy]phenol and their transformation to the known coumarins xanthyletin, 8,8-dimethylpyrano[3,2-f]chromen-3(8H)-one and 7,7-dimethylpyrano[2,3-g]chromen-2(7H)-one is described.
从4-[((1,1-二甲基-2-丙炔基)氧基]苯酚开始,轻松制备新的4-烷氧基羰基角和线性吡喃香豆素,并将其转化为已知的香豆素黄嘌呤酮,8,8-二甲基吡喃并[3,2-描述了f ] chromen-3(8 H)-one和7,7-二甲基吡喃并[2,3 - g ] chromen-2(7 H)-one。