1-(2-氯乙基)-2-咪唑啉酮和哌啶酮盐酸盐缩合得1-[2-(2-氧代咪唑啉)乙基]哌啶-4-酮,再和1-(4-氟苯基)-5-氯吲哚(3)缩合得1-[2-[4-[......