申请人:Armengol Asparo Montserrat
公开号:US20060025600A1
公开(公告)日:2006-02-02
In particular, zolmitriptan or a pharmaceutically acceptable salt thereof, which includes a)Preparation of the diazonium salt of the aniline hydrochloride (II); followed by reduction and acidification to give hydrazine (III); b) In situ Reaction of the hydrazine hydrochloride (III) with α-keto-δ-valerolactone, to give the hydrazone (IV); c) Fischer indole synthesis of the hydrazone (IV), to give the pyranoindolone of formula (V); d) Transesterification of the pyranoindolone (V) to provide the compound (VI), in which R means a straight or branched C1-C4 alkyl; e) Conversion of the hydroxyl group of the compound (VI) into dimethylamino to give the indolecarboxylate (VII), in which R means a straight or branched C1-C4 alkyl; f) Saponification of the 2-carboalkoxy group of the compound (VII), to provide indolecarboxylic acid (VIII); g) Decarboxylation of the indolecarboxylic acid (VIII), to provide zolmitriptan and, eventually, to provide a pharmaceutically acceptable salt thereof.
具体来说,氯米特普坦或其药学上可接受的盐,包括:a)制备苯胺盐酸盐的重氮盐(II);接着还原并酸化以得到肼(III);b)肼盐酸盐(III)与α-酮-δ-戊内酯原位反应,得到肼酰肟(IV);c)肼酰肟(IV)进行菲歇尔吲哚合成反应,得到式(V)的吡喃吲哚酮;d)转酯化吡喃吲哚酮(V)以提供化合物(VI),其中R代表直链或支链C1-C4烷基;e)将化合物(VI)的羟基转化为二甲氨基,以得到吲哚羧酸酯(VII),其中R代表直链或支链C1-C4烷基;f)皂化化合物(VII)的2-羧酸酯基团,以提供吲哚羧酸(VIII);g)脱羧化吲哚羧酸(VIII),以提供氯米特普坦,并最终提供药学上可接受的盐。