The invention relates to a new method of synthesis of 5-[(R)-2-(5,6-diethyl-indan-2-ylamino)- 1-hydroxyethyl]-8-hydroxy-(1H)-quinolin-2-one of formula (R)-2, known under the generic name indacaterol, which is used for the treatment of chronic obstructive pulmonary disease (COPD). The method comprises preparation of the racemic intermediate 5-[2-(5,6-diethyl-indan-2-ylamino)-1-hydroxyethyl]-8-benzyloxy-(1H)-quinolin-2-one of formula 1, which is further, in an arbitrary order, chirally resolved and debenzylated, and subsequently indacaterol of formula (R)-2 is isolated.
该发明涉及一种新的合成方法,用于合成
化学式为5-[(R)-2-(5,6-
二乙基茚-2-基
氨基)-1-羟乙基]-8-羟基-(1H)-
喹啉-2-酮的化合物(R)-2,通用名称为吲托特罗,用于治疗慢性阻塞性肺病(
COPD)。该方法包括制备外消旋中间体5-[2-(5,6-
二乙基茚-2-基
氨基)-1-羟乙基]-8-苄氧基-(1H)-
喹啉-2-酮的化合物1,然后,以任意顺序进行立体分离和脱苄基化,并最终分离出吲托特罗的
化学式(R)-2。