19 research outputs found

    Regio- and Stereoselective Synthesis of a Library of Bioactive Dispiro-Oxindolo/Acenaphthoquino Andrographolides via 1,3- Dipolar Cycloaddition Reaction Under Microwave Irradiation

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    Dispiro-pyrrolidino/pyrrolizidino fused oxindoles/acenaphthoquinones have been derived from andrographolide via azomethine ylide cycloaddition to the conjugated double-bond under microwave (MW) irradiation. The reactions are chemo-, stereo-, and regioselective in nature. Change in amino acid from sarcosine/N-benzyl glycine to L-proline changes the regiochemistry. A representative library of 40 compounds along with in vitro anticancer evaluation is reported
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