A method for the preparation of treprostinil and its derivatives is described. In contrast to prior art, this method utilizes an easily scalable enzymatic resolution of a key intermediate for making these compounds. Another significant improvement of the described method over prior methods is the regioselective Claisen rearrangement of a 5-allyloxy-benzaldehyde precursor, which is facilitated by a bromo substituent in 2-position.
本文描述了一种制备Treprostinil及其衍
生物的方法。与现有技术相比,这种方法利用了一种易于扩展的酶解法制备这些化合物的关键中间体。所述方法相对于先前的方法的另一个显著改进是一个5-烯
丙氧基苯甲醛前体的区域选择性Claisen重排,这是由2-位置的
溴取代基促进的。