桦木酸有强抗癌活性三萜类桦木酸很容易从白桦树皮中得到。现发现桦木酸能抑制以独特方式生长的人类黑色素肿瘤。该药单用或与其他药物合用，治疗黑色素瘤仅短期内见效或有剧毒或两者均有。经芝加哥伊利诺斯大学药物和生药学系ＪｏｈｎＭＰｅｚｚｕｔｏ进一步予以筛选，和... Betulinic acid has potent anti-cancer activity Triterpenoid betulinic acid is readily obtained from birch bark. Betulinic acid is now found to inhibit human melanoma tumors that grow in a unique way. The drug alone or in combination with other drugs, the treatment of melanoma effective only in the short term or highly toxic or both. Further screening by John Pezzuto, Department of Pharmacy and Pharmacology, University of Illinois at Chicago, ...