(S)-1-{(1R,3R)-3-[2-(2,5-Diamino-6-chloro-pyrimidin-4-ylamino)-ethyl]-2,2-dimethyl-cyclobutyl}-ethanol 在
盐酸 、 sodium nitrite 作用下,
以76%的产率得到(S)-1-{(1R,3R)-3-[2-(5-Amino-7-chloro-[1,2,3]triazolo[4,5-d]pyrimidin-3-yl)-ethyl]-2,2-dimethyl-cyclobutyl}-ethanol