Compounds are disclosed of formula (I) ##STR1## wherein R.sub.1 represents H or C.sub.1-6 alkyl; R.sub.2 represents H or C.sub.1-6 alkyl; R.sub.3 represents H; R.sub.4 represents H or C.sub.1-3 alkyl; and pharmaceutically acceptable salts and solvates (for example hydrates thereof. The compounds are indicated as useful for the treatment of migraine, cluster headache, chronic paroxysmal hemicrania and headache associated with vascular disorders. Processes and intermediates for their preparation and pharmaceutical compositions containing them are also disclosed.
The photoredox-catalyzed hydrosulfamoylation of styrenes and its application in the novel synthesis of naratriptan
作者:Mingjun Zhang、Miaomiao Chen、Xin Ding、Jin Kang、Yongyue Gao、Xingxing He、Ziwen Wang、Aidang Lu、Qingmin Wang
DOI:10.1039/d1cc04225d
日期:——
The hydrosulfamoylation of diverse arylolefins 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