Betulin and betulinic acid, the triterpenes of the lupane family, are considered to be potential agents against tumoral cancer and HIV .

桦木醇、桦木酸是具有羽扇烷结构化合，目前发现，它们具有较高抗肿瘤、抗HIV病毒活性，它们衍生也有较高生活性。