Process for the preparation of 2-alkyl-1-((2'-substituted-biphenyl-4-yl) Methyl)-imidazole, dihydroimidazole or benzimidazloe derivatives
申请人:Selic Lovro
公开号:US20090176849A1
公开(公告)日:2009-07-09
The invention relates to a new process for the preparation of sartans 2-butyl-3-[[2′-[1-(triphenylmethyl)-1H-tetrazol-5-yl][1,1′-biphenyl]-4-yl]methyl]-1,3-diazaspiro[4.4]non-1-en-4-one is disclosed, which proceeds via novel intermediate, 4-[(2-butyl-4-oxo-1,3-diazaspiro[4.4]non-1-en-3-yl)methyl]phenylboronic acid (Formula (II)) or its analogs. Compound (II) reacts with 5-(2-bromophenyl)-1-(triphenylmethyl)-1H-tetrazole (III) in the presence of catalyst, using conditions of Suzuki reaction, to give trityl irbesartan (I), whereas analogs to compound (II) may give candesartan, valsartan, telmisartan, losartan and olmesartan.
该发明涉及一种新的用于制备沙坦类药物的工艺,公开了通过新型中间体进行的制备方法,即4-[(2-丁基-4-氧代-1,3-二氮杂螺[4.4]壬-1-烯-3-基)甲基]苯硼酸(式(II))或其类似物。化合物(II)在催化剂存在下与5-(2-溴苯基)-1-(三苯甲基)-1H-四唑(III)在铃木反应条件下反应,得到三苯基缬沙坦(I),而类似于化合物(II)的类似物可能给出坎地沙坦、缬沙坦、缬沙坦、洛卡特普、奥美沙坦等沙坦类药物。