Efficient synthesis and biological evaluation of 1,2,9-trisubstituted 1,9-dihydro-6H-purin-6-ones
作者:Nian-Yu Huang、Yong-Ju Liang、Ming-Wu Ding、Li-Wu Fu、Hong-Wu He
DOI:10.1016/j.bmcl.2008.12.007
日期:2009.2
The carbodiimides 4, obtained from aza-Wittig reactions of iminophosphorane 3 with aromatic isocyanates, reacted with amines in the presence of a catalytic amount of RO Na+ to give the 1,2,9-trisubstituted 1,9-dihydro-6H-purin-6-ones 6 in good yields. Compound 6 exhibited cytotoxicity against various cancer cells. For example, compounds 6b showed the best inhibition activities against KB, HepG2 and OVCAR3 with IC50 9.5, 20.4 and 10.0 mu M. (C) 2008 Elsevier Ltd. All rights reserved.