Skip to main content
. Author manuscript; available in PMC: 2016 May 1.
Published in final edited form as: Bioorg Med Chem Lett. 2015 Mar 14;25(9):1982–1985. doi: 10.1016/j.bmcl.2015.03.019

Scheme 3.

Scheme 3

Reagents and conditions: (i) (a) SOCl2, reflux, 12 h, (b) 3-methoxythiophene, AlCl3, dry DCM, reflux, 12 h; (ii) (a) H2, Pd/C, 60 psi, 12 h, (b) 1,3-bis(methoxycarbonyl)-2-methyl-2-thiopseudourea, MeOH, PTSA, reflux,10 h.