從民間藥冇骨消(Sambucus formosana)葉部分離得八種結晶(結晶 A、B、C、D、E、F、G、H),其中三種(結晶 B、C及G)分別證明為屬於三萜類之 α-amyrin palmitate與 β-amyrin palmitate混合物(結晶 B), β-amyrin palmitate(結晶 C)及 β-sitosterol(結晶 G)。
Eight crystals (crystal A, B, C, D, E, F, G and H) have been isolated from the fresh leaves of Sambucus formosana Nakai. Three of the have identified as a mixture (crystal B) of α-amyrin palmitate (1) and β-amyrin palmitate (2), β-amyrin palmitate (crystal C), and β-sitosterol (crystal G).