Cytotoxic activity and apoptosis-inducing potential of di-spiropyrrolidino and di-spiropyrrolizidino oxindole andrographolide derivatives. oleh Sumit Kumar Dey, Dipayan Bose, Abhijit Hazra, Subhendu Naskar, Abhishek Nandy, Rudra Narayan Munda, Subhadip Das, Nabanita Chatterjee, Nirup Bikash Mondal, Sukdeb Banerjee, Krishna Das Saha