%0 Journal Article %T Synthesis and Cytotoxic Evaluation of Carboxylic Acid %A Bach Long Giang %A Dang Thi Tuyet Anh %A Le Nhat Thuy Giang %A Le Thi Tu Anh %A Luc Quang Tan %A Ngo Hanh Thuong %A Nguyen Ha Thanh %A Nguyen Tien Dung %A Nguyen Tuan Anh %A Nguyen Van Tuyen %A Pham Hoai Thu %A Phan Van Kiem %J Natural Product Communications %@ 1555-9475 %D 2019 %R 10.1177/1934578X19849787 %X In order to find out the influence of carboxylic acid functionalities in the N-lactam side chains of indenoisoquinolines on cytotoxic activities, several new compounds have been synthesized and structurally characterized by analytical and spectral methods. The incorporation of a carboxylic acid group into the lactam side chain of indenoisoquinolines results in differences in cytotoxicity. The results indicated that compound 18c displayed substantial cytotoxic specificity toward KB and HepG2 cancer cells %K indenoisoquinolines %K carboxylic acid %K cytotoxic agents %U https://journals.sagepub.com/doi/full/10.1177/1934578X19849787