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
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