[EN] SYNTHESIS OF TREPROSTINIL AND INTERMEDIATES USEFUL THEREIN<br/>[FR] SYNTHÈSE DU TRÉPROSTINIL ET INTERMÉDIAIRES UTILES À SA SYNTHÈSE
申请人:ALPHORA RES INC
公开号:WO2012009816A1
公开(公告)日:2012-01-26
Treprostinil is prepared by a process which involves Pauson - Khan cyclization of an an alkene-substituted, alkyne-substituted benzene corresponding to formula : (I) where PMB represents para-methoxy benzyl protecting group and R1 and R2 are alcohol protecting groups. Following cyclization, the resulting compound can be subjected to several chemical transformations followed by alkylation, hydrolysis and salt formation to yield treprostinil sodium. The use of para-methoxybenzyl group as the phenolic protecting group confers several process advantages that result in simplified purification of the final product and improved yields.
Treprostinil是通过涉及Pauson-Khan环化的过程制备的,该过程涉及与对磺酸甲氧基苄保护基和R1和R2为醇保护基的烯烃取代、炔烃取代苯对应的化学式:(I)。在环化之后,所得化合物可以经历几种化学转化,然后进行烷基化、水解和盐形成,以产生曲普罗斯汀钠。将对磺酸甲氧基苄基作为酚保护基的使用赋予了几种工艺优势,从而简化了最终产品的纯化并提高了产量。