【摘要】 从鸡骨常山(Alstonia yunnanensis Diels)茎叶的弱碱部分得到八个吲哚生物碱,经理化常数和UV、IR、MS和NMR等光谱资料的分析,推定3-氧代-11-甲氧基它勃水甘草宁(3-oxo-11-methoxytabersonine)是新生物碱,其余七个均为已知化合物。更多还原

【Abstract】 Eight indole alkaloids were isolated from the crude weak alkaloid of the stems and leaves of Alstonia yunnanensis Diels. Seven of them are known compounds. The new alkaloid, 7, was suggested as 3-oxo-11-methoxytabersonine on the basis of spectral evidence.更多还原