Synthetic Communications p. 2163 - 2168 (1999)
Update date:2022-08-03
Topics:
Tapia, Ricardo A.
Centella, Cesar R.
Valderrama, Jaime A.
Condensation of 3,6-dimethoxy-2-nitrobenzoyl chloride with L-proline methyl ester afforded amide 4, which underwent reductive cyclization with iron(II) sulfate and ammonium hydroxide to yield pyrrolobenzodiazepine 5. Oxidation of 5 with ammonium cerium(IV
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