... Tetrahedron. Volume 65, Issue 45, 7 November 2009, Pages 9300–9315. ... 9, 9a, 9b and 9c Anti-proliferative activity against P-388 and human colon carcinoma HT-29 cells have been reported for oxotoddaline. 10, 10a, 10b and 10c Oxynitidine possesses cytotoxic activity. ...