92076-00-1Relevant academic research and scientific papers
Synthesis of racemic cis-5-hydroxy-3-phthalimidoglutarimide. A metabolite of thalidomide isolated from human plasma
Luzzio, Frederick A.,Duveau, Damien Y.,Lepper, Erin R.,Figg, William D.
, p. 10117 - 10120 (2007/10/03)
A synthesis of the glutarimide-derived metabolite of thalidomide, 5′-hydroxythalidomide (2), is described. The synthesis employed the lactone derivative of N-benzyloxycarbonyl (CBZ)-protected 4-hydroxyglutamic acid 12, which is prepared by a de novo route from diethyl acetamidomalonate. The reaction of 12 with 4-methoxybenzylamine gave the corresponding isoglutamine, which then provided the key CBZ-protected N-PMB-glutarimide 14 after dehydration. Deprotection of both the CBZ and PMB groups followed by phthalimidation and deacetylation of the 3-amino-5-acetoxyglutarimide 16 afforded 2.
