Fig_3.tif (377.99 kB)
Synthetic scheme of compounds 23, 24, 33, 34, 35, 38.
figure
posted on 2015-07-01, 02:44 authored by Cristina Cattò, Silvia Dell’Orto, Federica Villa, Stefania Villa, Arianna Gelain, Alberto Vitali, Valeria Marzano, Sara Baroni, Fabio Forlani, Francesca CappitelliReagents and conditions: i) from 1 for 23, from 5 for 24, from 32 for 33: H2SO4, MeOH, reflux, 1 h; ii) from 32: Py · SO3, DMF dry, 120°C, 25 min; iii) CH3I, anhydrous K2CO3, dry DMF, reflux, 1.5 h; iv) 1N NaOH, EtOH.
