Process for the preparation of 17-phenyl-18,19,20-thinor-pgf 2a and its derivatives
申请人:——
公开号:US20040171873A1
公开(公告)日:2004-09-02
The present invention provides a new and effective process for the synthesis of 17-phenyl-18,19,20-trinor-PGF
2&agr;
and its derivatives, including the anti-glaucoma drugs Bimatoprost and Latanoprost. The benefit of the present invention rises inter alia from the fact that a major intermediate involved in the synthesis of the above compounds may be isolated from a mixture containing also an undesired isomer, by crystallization. In addition, the undesired isomer may be oxidized to give the starting compound, which is then recycled.
本发明提供了一种合成17-苯基-18,19,20-三去甲基前列腺素F2α及其衍生物的新有效过程,包括抗青光眼药物比马前列素和拉坦前列素。本发明的好处在于,合成上述化合物中涉及的一个主要中间体可以通过结晶从混合物中分离出来,该混合物还包含一个不需要的异构体。此外,不需要的异构体可以被氧化成起始化合物,然后进行回收利用。