Anti-AIDS agents, 11. Betulinic acid and platanic acid as anti-HIV principles from Syzigium claviflorum, and the anti-HIV activity of structurally related triterpenoids: T. Fujioka, et al.; J. Nat. Prod. 57, 243 (1994) Abstract Discovery of betulinic acid as a selective inhibitor of human melanoma that functions by induction of apoptosis: E. Pisha, et al.; Nat. Med. 1, 1046 (1995) Abstract Betulinic acid and dihydrobetulinic acid derivatives as potent anti-HIV agents: Y. Kashiwada, et al.; J. Med. Chem. 39, 1016 (1996) Abstract Betulinic acid triggers CD95 (APO-1/Fas)- and p53-independent apoptosis via activation of caspases in neuroectodermal tumors: S. Fulda, et al.; Cancer Res. 57, 4956 (1997) Abstract Anti-AIDS agents--XXVII. Synthesis and anti-HIV activity of betulinic acid and dihydrobetulinic acid derivatives: F. Hashimoto, et al.; Bioorg. Med. Chem. 5, 2133 (1997) Abstract Induction of p53 without increase in p21WAF1 in betulinic acid-mediated cell death is preferential for human metastatic melanoma: M. Rieber & M. Strasberg Rieber; DNA Cell Biol. 17, 399 (1998) Abstract Betulinic acid induces apoptosis in human neuroblastoma cell lines: M.L. Schmidt, et al.; Eur. J. Cancer 33, 2007 (1997) Abstract Activation of mitochondria and release of mitochondrial apoptogenic factors by betulinic acid: S. Fulda, et al.; J. Biol. Chem. 273, 33942 (1998) Abstract; Full Text Betulinic acid inhibits aminopeptidase N activity: M.F. Melzig & H. Bormann; Planta Med. 64, 655 (1998) Abstract Correspondence re: S. Fulda et al., Betulinic acid triggers CD95 (Apo1/Fas)- and p53-independent apoptosis via activation of caspases in neuroectodermal tumors. Cancer Res., 57: 4956, 1997: M. Rieber & M. Strasberg Rieber; Cancer. Res. 58, 5876 (1998) Abstract Betulinic acid: a new cytotoxic agent against malignant brain-tumor cells: S. Fulda, et al.; Int. J. Cancer 82, 435 (1999) Abstract Betulinic acid-induced apoptosis in glioma cells: A sequential requirement for new protein synthesis, formation of reactive oxygen species, and caspase processing: W. Wick, et al.; J Pharmacol. Exp. Ther. 289, 1306 (1999) Abstract; Full Text Effects of betulinic acid alone and in combination with irradiation in human melanoma cells: E. Selzer, et al.; J. Invest. Dermatol. 114, 935 (2000) Abstract Betulinic acid suppresses carcinogen-induced NF-kappa B activation through inhibition of I kappa B alpha kinase and p65 phosphorylation: abrogation of cycloox |