“…For key intermediates shown in Schemes and , compounds 14a , 14b , and 14c were successfully synthesized according to Uehara et al’s work (compound 28 ) and Fukunaga et al’s work (compound 6 and compound 26 ), respectively. Also, analogues 18a – 18m , 19a – 19e , 24a – 24e , and 25a – 25e , which are different tacrine derivatives bearing respective alkylamine, were smoothly synthesized according to Sun et al’s work using the similar method .…”