1-(2-Amino-2-methyl-propyl)-3-{(R)-2-oxo-1-[2'-(1H-tetrazol-5-yl)-biphenyl-4-ylmethyl]-2,3,4,5-tetrahydro-1H-benzo[b]azepin-3-yl}-urea 在
palladium on activated charcoal molecular sieve 、
氢气 、 sodium cyanoborohydride 作用下,
以
甲醇 、
三氟乙酸 为溶剂,
生成 1-[2-((R)-2-Hydroxy-propylamino)-2-methyl-propyl]-3-{(R)-2-oxo-1-[2'-(1H-tetrazol-5-yl)-biphenyl-4-ylmethyl]-2,3,4,5-tetrahydro-1H-benzo[b]azepin-3-yl}-urea