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从美丽马醉木 Pieris formosa (Wall) D.Don叶的乙醇提取物中分得 4个木藜芦烷型二萜化合物 ,经波谱分析 ,确定它们分别为山月桂毒素 (kalmitoxin , )、山月桂毒素 (kalmitoxin , )、马醉木毒苷 A(pieroside A , )和木藜芦毒苷 B(grayanoside B, )。以上化合物均首次从该植物中分得 ,化合物 ～ 的 1 3CNMR数据已进行了归属
From the ethanol extract of leaves of Pieris formosa (Wall) D. Don, four woody diterpene diterpene compounds were isolated and analyzed by spectroscopic analysis to determine them as kalmitoxin and laureltoxin, respectively. Kalmitoxin, ), pieroside A, and grayanoside B,. The above compounds were all isolated from the plant for the first time. The 13C NMR data of the compound have been assigned.