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200517.fm Page 193 Friday, March 18, 2005 2:52 PM
2005
Multi-membered N-heterocycles
R 0690
Synthesis of DNA-Interactive Pyrrolo[2,1-c][1,4]benzodiazepines by Employing
Reagents: Preparation of DC-81. — By use of polymer-sup17- 174 Polymer-Supported
ported reagents, the work-up is simplified to filtration and evaporation for all steps
leading to the title compounds. The route involves amide formation, Swern oxidation,
and intramolecular reductive cyclization. DC-81 (VI) is obtained by debenzylation of
derivative (Vf) employing Pd-C. — (KAMAL*, A.; REDDY, K. L.; DEVAIAH, V.;
SHANKARAIAH, N.; Synlett 2004, 14, 2533-2536; Biotransform. Lab., Indian Inst.
Chem. Technol., Hyderabad 500 007, India; Eng.) — Klein
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