2-(7-fluorochroman-6-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 、 (S)-methyl 2-(tert-butoxy)-2-(1-(3,4-difluorobenzyl)-4-iodo-6-methyl-1H-pyrrolo[2,3-b]pyridin-5-yl)acetate 在
(2S)(M)-2-(tert-butoxy)-2-(1-(3,4-difluorobenzyl)-4-(7-fluorochroman-6-yl)-6-methyl-1H-pyrrolo[2,3-b]pyridin-5-yl)acetic acid 、 crude acid 、
Water isopropylalcohol 作用下,
生成 (2S)(M)-2-(tert-butoxy)-2-(1-(3,4-difluorobenzyl)-4-(7-fluorochroman-6-yl)-6-methyl-1H-pyrrolo[2,3-b]pyridin-5-yl)acetic acid