Limonoids from seeds of A. Juss. and their cytotoxic activity.

Four new limonoid-type nortriterpenoids, 1-detigloyl-1--methacryloylsalannin (), 28-deoxo-2,3-dihydronimbolide (), 12-acetoxy-3--acetyl-7--tigloylvilasinin () and 12-acetoxy-3--acetyl-7--methacryloylvilasinin (), along with five known ones, were isolated from seeds of A. Juss. Their structures were elucidated by various spectroscopic methods, including UV, IR, MS, NMR, X-ray crystallography, quantum chemical calculation, as well as by comparison of their spectroscopic data with those reported. In the cytotoxic assay, showed inhibitory activity against human breast cancer MDA-MB-231 cell line with IC value of 7.68±1.74 μmol/L, and inhibited growth of human cervical cancer Hela cell line, melanoma A375 cell line and promyelocytic leukemia HL-60 cell line, with IC 12.00±2.08, 17.44±2.11, and 13.95±5.74 μmol/L, respectively.