98623-50-8Relevant articles and documents
The photoredox-catalyzed hydrosulfamoylation of styrenes and its application in the novel synthesis of naratriptan
Chen, Miaomiao,Ding, Xin,Gao, Yongyue,He, Xingxing,Kang, Jin,Lu, Aidang,Wang, Qingmin,Wang, Ziwen,Zhang, Mingjun
supporting information, p. 9140 - 9143 (2021/09/14)
The hydrosulfamoylation of diverse aryl olefins provides facile access to alkylsulfonamides. Here we report a novel protocol utilizing radical-mediated addition and a thiol-assisted strategy to achieve the hydrosulfamoylation of diverse styrenes in modest to excellent yields under mild and economic reaction conditions. The methodology was found to provide an efficient and convenient approach for the synthesis of the anti-migraine drug naratriptan and it also can be used for the late-stage functionalization of natural products or medicines.
A PROCESS FOR THE SYNTHESIS OF NARATRIPTAN
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, (2011/04/13)
The present invention relates to a process for preparing naratriptan or a salt thereof, the process comprising: (a) reacting a compound of formula (3) with a compound of the formula HCCR wherein Z is a protecting group, Y is a leaving group and R is a trialkyl silyl group, a trialkylstannyl group or a zinc (II) halide, to obtain the compound of formula (4); (b) converting the compound of formula (4) to a compound of formula (5) wherein Z'' is hydrogen or a benzyl group; (c) converting the compound of formula (5) to naratriptan; and (d) optionally converting naratriptan to a salt thereof. The present invention also provides novel compounds (3) and (4) and processes for their preparation.
PROCESS FOR PREPARATION OF NARATRIPTAN HYDROCHLORIDE
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Page/Page column 31, (2009/10/22)
The present invention relates to an improved process for the preparation of N-methyl-3- (1-methyl-4-piperidinyl)-1H-indole-5-ethanesulfonamide hydrochloride of formula (I) having less than 0.15 % area by HPLC of 3-(1-methyl-4-piperidinyl)-1H-indole-5- ethanesulfonamide (1A) and intermediates thereof.