This invention is directed to stereoselective synthesis of compounds of formula (I) or formula (II):
or a pharmaceutically acceptable salt, ester, amide, complex, chelate, clathrate, solvate, polymorph, stereoisomer, metabolite or prodrug thereof; wherein R
3
, R
4
and R
5
are defined herein. Compounds of formula (I) and formula (II) are known to be useful in treating arrhythmias.
该发明涉及化合物的立体选择性合成,其
化学式为(I)或(II):或其药学上可接受的盐、酯、酰胺、络合物、螯合物、笼合物、溶剂合物、多晶形、立体异构体、代谢物或前药;其中,R3、R4和R5的定义如本文所述。已知化合物(I)和(II)在治疗心律失常方面具有用途。