Synthesis of DNA-Interactive Pyrrolo[2,1-c][1,4]benzodiazepines by Employing Polymer-Supported Reagents: Preparation of DC-81

Polymer-supported reagents have been utilized for the generation of combinatorial library of substituted pyrrolo[2,1-c][1,4]benzodiazepine derivatives that provides a clean and efficient preparation and does not require conventional purification techniques like chromatography. This methodology involves intra molecular aza-Wittig reaction and has been extended for the synthesis of the natural product DC-81 in good overall yields.