Synthesis of 1,1-dioxopenicillanoyloxymethyl 6-[D-alpha-(benzylideneaminophenylacetamido)]penicillanate and analogs. New intermediates in the preparation of sultamicillin
C. Del Pozo et al., Synthesis of 1,1-dioxopenicillanoyloxymethyl 6-[D-alpha-(benzylideneaminophenylacetamido)]penicillanate and analogs. New intermediates in the preparation of sultamicillin, TETRAHEDRON, 57(29), 2001, pp. 6209-6214
The synthesis of benzylidene imines of sultamicillin and analogs 1 is descr
ibed. These new compounds showed high stability and were prepared under ver
y mild conditions and high yields. Furthermore, they are convenient startin
g materials for the preparation of sultamicillin 5 (important prodrug of am
picillin and sulbactam) as its base form, by deprotection of the amino grou
p with Girard reagents. (C) 2001 Elsevier Science Ltd. All rights reserved.