申请人:Soni Rohit Ravikant
公开号:US20080262244A1
公开(公告)日:2008-10-23
A process for the preparation of 4-[2-(Di-n-propylamino)ethyl]-2,3-dihydro-1H-indol-2-one of formula (I) and its pharmaceutically acceptable salts, solvates Formula I involving new intermediates of compound of formula (A) and (B) wherein R represents (i) a halogen atom selected from fluorine, chlorine atom, bromine atom and iodine atom; (ii) lower alkanesulfonyloxy group selected from methanesulfonyloxy, ethanesulfonyloxy, isopropanesulfonyloxy, propanesulfonyloxy, butanesulfonyloxy, tert-butanesulfonyloxy, pentanesulfonyloxy, hexanesulfonyloxy; (iii) substituted or unsubstantiated arylsulfonyloxy group selected from phenylsulfonyloxy, 4-methylphenylsulfonyloxy, 2-methylphenylsulfonyloxy, 4-nitrophenylsulfonyloxy, 4-methoxyphenylsulfonyloxy, 3-chlorophenylsulfonyloxy; (iv) arylalkylsulfonyloxy group selected from benzylsulfonyloxy, 2-phenylethylsulfonyloxy, 4-phenylbutylsulfonyloxy, 4- methylbenzylsulfonyloxy, 2-methylbenzylsulfonyloxy, 4-nitrobenzylsulfonyloxy, 4-methoxybenzylsulfonyloxy, 3-chlorobenzylsulfonyloxy.
一种制备公式(I)和其药学上可接受的盐、溶剂合物的4-[2-(二正丙基氨基)乙基]-2,3-二氢吲哚-2-酮的方法,涉及公式(A)和(B)的新中间体,其中R代表(i)从氟、氯、溴和碘中选择的卤素原子;(ii)从甲磺酰氧基、乙磺酰氧基、异丙磺酰氧基、丙磺酰氧基、丁磺酰氧基、叔丁磺酰氧基、戊磺酰氧基、己磺酰氧基中选择的低级烷基磺酰氧基;(iii)从苯基磺酰氧基、4-甲基苯基磺酰氧基、2-甲基苯基磺酰氧基、4-硝基苯基磺酰氧基、4-甲氧基苯基磺酰氧基、3-氯苯基磺酰氧基中选择的取代或未取代芳基磺酰氧基;(iv)从苄基磺酰氧基、2-苯乙基磺酰氧基、4-苯基丁基磺酰氧基、4-甲基苯基甲基磺酰氧基、2-甲基苯基磺酰氧基、4-硝基苯基磺酰氧基、4-甲氧基苯基磺酰氧基、3-氯苯基磺酰氧基中选择的芳基烷基磺酰氧基。