A process for preparation of a compound of formula (I) or or a pharmaceutically acceptable salt, ester, or prodrug thereof, is disclosed. The process involves hydrogenating, in the presence of a catalyst, a compound of formula (II). The different substituents are as described in the specification. Also disclosed are intermediates and processes for their preparation. Further, the process can provide an alternate route for the synthesis of Vernakalant from starting materials that can be readily available.
本发明公开了一种制备式(I)化合物或其药学上可接受的盐、酯或前药的方法。该方法涉及在催化剂存在下氢化式(II)化合物。不同的取代基如规范中所述。还公开了中间体及其制备方法。此外,该方法可以提供一种从可以容易得到的起始材料合成维纳
卡兰特的替代路线。