Discovery of betulinic acid as a selective inhibitor of human melanoma that functions by induction of apoptosis
E. Pisha, H. Chai, I-S Lee, T. E. Chagwedera, N. R. Farnsworth, G. A. Cordell, C. W. W. Beecher, H. H. S. Fong, A. D. Kinghorn, D. M. Brown, M. C. Wani, M. E. Wall, T. J. Hieken, T. K. D. Gupta and J. M. Pezzuto (1995). Discovery of betulinic acid as a selective inhibitor of human melanoma that functions by induction of apoptosis, Nat. Med. 1, 1046-1051.
W. C. Ye, N. N. Ji, S. X. Zhao, J. H. Liu, T. Ye, M.A. McKervey and P. Stevenson (1996). Triterpenoids from Pulsatilla chinensis, Phytochemistry. 42, 799-802.
Selective cytotoxicity of betulinic acid on tumor cell lines, but not on normal cells
V. Zuco, R. Supino, S. C. Righetti, L. Cleris, E. Marchesi, C. Gambacorti-Passerini and F. Formelli (2002). Selective cytotoxicity of betulinic acid on tumor cell lines, but not on normal cells, Cancer Letters. 175, 17-25.
New betulinic acid derivatives induce potent and selective antiproliferative activity through cell cycle arrest at the S phase and caspase dependent apoptosis in human cancer cells
R. C. Santos, J. A. R. Salvador, R. Cortés, G. Pachón, S. Marín and M. Cascante (2011). New betulinic acid derivatives induce potent and selective antiproliferative activity through cell cycle arrest at the S phase and caspase dependent apoptosis in human cancer cells, Biochimie. 93, 1065-1075.
A review of natural and modified betulinic, ursolic and echinocystic acid derivatives as potential antitumor and anti-HIV agents
I. Baglin, A. C. Mitaine-Offer, M. Nour, K. Tan, C. Cave and M. A. Lacaille-Dubois (2003). A review of natural and modified betulinic, ursolic and echinocystic acid derivatives as potential antitumor and anti-HIV agents, Mini-Rev Med Chem. 3, 525-539.
Betulinic acid and its derivatives as anti-angiogenic agents
R. Mukherjee, M. Jaggi, P. Rajendran, M. J. A. Siddiqui, S. K. Srivastava, A. Vardhanb and A. C. Burman (2004). Betulinic acid and its derivatives as anti-angiogenic agents, Bioorg Med Chem Lett. 14, 2181-2184.
Synthesis of novel [3,2-b]indole fused oleanolic acids as potential inhibitors of cell proliferation
H. J. Finlay, T. Honda and G. W. Gribble (2002). Synthesis of novel [3,2-b]indole fused oleanolic acids as potential inhibitors of cell proliferation, ARKIVOC. xii, 38-46.
23-Hydroxybetulinic acid mediated apoptosis is accompanied by decreases in bcl-2 expression and telomerase activity in HL-60 cells
Z. N. Ji, W. C. Ye, G. G. Liu and W. L. W. Hsiao (2002). 23-Hydroxybetulinic acid mediated apoptosis is accompanied by decreases in bcl-2 expression and telomerase activity in HL-60 cells, Life Sci. 72, 1-9.
Synthesis and cytotoxic activity of 17-carboxylic acid modified 23-hydroxy betulinic acid ester derivatives
Y. Bi, J.Y. Xu, X. M. Wu, W. C. Ye, S. T. Yuan and L.Y. Zhang (2007). Synthesis and cytotoxic activity of 17-carboxylic acid modified 23-hydroxy betulinic acid ester derivatives, Bioorg Med Chem Lett, 17, 1475-1478.
Synthesis and antitumor activity of derivatives of 23-hydroxybetulinic acid
J. P. Zhou, D. Li, X. M. Wu, W. C. Ye and L. Y. Zhang (2007). Synthesis and antitumor activity of derivatives of 23-hydroxybetulinic acid, Chin Chem Lett. 18, 1195-1198.
Anti-AIDS Agents 49 Synthesis, Anti-HIV, and Anti-Fusion Activities of IC9564 Analogues Based on Betulinic Acid
I. C. Sun, C. H. Chen, Y. Kashiwada, J. H. Wu, H. K. Wang and K. H. Lee (2002). Anti-AIDS Agents 49 Synthesis, Anti-HIV, and Anti-Fusion Activities of IC9564 Analogues Based on Betulinic Acid, J. Med. Chem. 45, 4271-4275.
Preparation of amino acid conjugates of betulinic acid with activity against human melanoma
H. J. Jeong, H. B. Chai, S. Y. Park and D. S. H. L. Kim (1999). Preparation of amino acid conjugates of betulinic acid with activity against human melanoma, Bioorg Med Chem Lett. 9, 1201-1204.
X. M. Wu, J. Y. Xu, Y. Bi, J. P. Zhou, L. Y. Zhang, S. T. Yuan, D. Li and P. Xu (2009). Synthesis method, application and pretaration of 23-hydroxy betulinic acid derivatives, CHN 200610040277, In Chinese.