Synthesis, Structure Analysis and Cytotoxicity Studies of Novel Unsymmetrically N,N'-Substituted Ureas from Dehydroabietic Acid
作者:Xiaoping Rao、Zhanqian Song、Ling He、Weihong Jia
DOI:10.1248/cpb.56.1575
日期:——
A series of novelunsymmetrically N,N'-substituted ureas were synthesized from dehydroabietic acid and their structures were characterized by IR, 1H-NMR, 13C-NMR spectroscopy and single crystal X-ray diffraction. Three six-membered rings of urea 4c exhibited plane, half-chair and chair configurations, respectively. Their cytotoxicity activities against SMMC7721 liver cancer cells were evaluated by