{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,13]],"date-time":"2025-11-13T12:18:49Z","timestamp":1763036329483},"reference-count":40,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2008,4,28]],"date-time":"2008-04-28T00:00:00Z","timestamp":1209340800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Archiv der Pharmazie"],"published-print":{"date-parts":[[2008,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Sumatriptan is a potent and selective 5\u2010HT<jats:sub>1B<\/jats:sub> and 5\u2010HT<jats:sub>1D <\/jats:sub>agonist used in the symptomatic treatment of migraine; it shows poor oral bioavailability ascribed, in part, to its low lipophilicity. In an attempt to develop acyloxymethyl prodrugs of sumatriptan suitable for oral administration, we carried out the reaction of sumatriptan with chloromethyl esters. To our surprise, acyloxymethylation occurred preferentially at the indole nitrogen rather than at sulfonamide nitrogen, reflecting a difference either in product stability or in the nucleophilicities of the indole and sulfonamide anions. The hydrolysis of the corresponding<jats:italic> N<\/jats:italic><jats:sup>1<\/jats:sup>\u2010acyloxymethyl derivatives was studied in aqueous buffers and in human plasma, by HPLC. <jats:italic>N<\/jats:italic><jats:sup>1<\/jats:sup>\u2010Acyloxymethyl derivatives of sumatriptan are rapidly hydrolysed to the chemically stable <jats:italic>N<\/jats:italic><jats:sup>1<\/jats:sup>\u2010hydroxymethylsumatriptan at pH 1\u201013. Slow formation of the parent drug was observed only at high pH values. Hydrolysis of sumatriptan derivatives is slower in human plasma than in phosphate buffer and also generates <jats:italic>N<\/jats:italic><jats:sup>1<\/jats:sup>\u2010hydroxymethylsumatriptan rather than the parent drug. These results indicate that <jats:italic>N<\/jats:italic><jats:sup>1<\/jats:sup>\u2010acyloxymethyl derivatives of sumatriptan cannot be considered as true prodrugs of sumatriptan.<\/jats:p>","DOI":"10.1002\/ardp.200700250","type":"journal-article","created":{"date-parts":[[2008,4,28]],"date-time":"2008-04-28T15:49:27Z","timestamp":1209397767000},"page":"344-350","source":"Crossref","is-referenced-by-count":3,"title":["Unanticipated Acyloxymethylation of Sumatriptan Indole Nitrogen Atom and its Implications in Prodrug Design"],"prefix":"10.1002","volume":"341","author":[{"given":"Tiago","family":"Rodrigues","sequence":"first","affiliation":[]},{"given":"Rui","family":"Moreira","sequence":"additional","affiliation":[]},{"given":"Rita C.","family":"Guedes","sequence":"additional","affiliation":[]},{"given":"Jim","family":"Iley","sequence":"additional","affiliation":[]},{"given":"Francisca","family":"Lopes","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2008,6,5]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM200206063462313"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.2165\/00003495-199855060-00020"},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.2165\/00003088-199427050-00002"},{"key":"e_1_2_1_5_2","doi-asserted-by":"crossref","first-page":"622","DOI":"10.2165\/00003495-199447040-00006","volume":"47","author":"Plosker G. 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