3,4-dihydro-2H-spiro[furo[2,3-h][1,5]benzodioxepine-9,3'-indol]-2'(1'H)-one 、 5,6-dihydrospiro[benzo[1,2-b:5,4-b']difuran-3,3'-indol]-2'(1'H)-one 、
2-(溴甲基)吡啶氢溴酸盐 、
2-(bromomethyl)tetrahydro-2H-pyran 以1′-(pyridin-2-ylmethyl)-3,4-dihydro-2H-spiro[furo[2,3-h][1,5]benzodioxepine-9,3′-indol]-2′(1′H)-one was obtained (90%) as a colorless solid的产率得到(pyridin-2-ylmethyl)-3,4-dihydro-2H-spiro[furo[2,3-h][1,5]benzodioxepine-9,3'-indol]-2'(1'H)-one