191864-24-1Relevant articles and documents
Synthesis of zolmitriptan and related substances
Vujjini, Satish Kumar,Mothukuri, Vivekananda Reddy,Islam, Aminul,Bandichhor, Rakeshwar,Kagga, Mukkanti,Malakondaiah, Golla China
, p. 3294 - 3306 (2013/10/01)
Efficient and cost-effective synthesis of Zolmitriptan 1 employing Japp-Klingemann reaction and a new robust purification strategy is described.
PROCESS FOR PREPARING ZOLMITRIPTAN COMPOUNDS
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Page 16-17, (2008/06/13)
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 ?-keto-?-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.
