variety of biologically active compounds and is frequently condensed with various heterocycles, synthesis and biological evaluation of the indenoquinoline skeleton attracts only very limited attention. We report herein the synthesis and antiproliferative evaluation of certain indeno[1,2-c]quinoline derivatives against the growth of six cancer cell lines including human cervical epithelioid carcinoma
Certain indeno[1,2-c]quinolines were synthesized and evaluated for antiosteoclastogenic activities. Among them, 6,9-dimethoxy-11H-indeno[1,2-c]quinolin-11-one (8a) and 9-methoxy-6-(methylthio)-11H-indeno[1,2-c]quinolin-11-one (16a) inhibited RANKL-induced osteoclast formation in Raw 264.7 cells with an IC50 of 2.00 and 2.58 mu M, respectively. Compound 8a was only weakly active in the inhibition of the: RANKL-induced NFAT activation; while 16a was inactive. These results indicated that the antiosteoclastogenic effect of 8a is only; partly related while 16a is not related to the suppression of NFAT.