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趙承嘏、傅豐永、高怡生中藥常山之抗瘧質素美國化學會誌,1948年70卷1765—1767頁内容摘要——本文作者自中藥常山(Dichroa febrifuga L.)中分離得Umbelliferon,4-quinazolone,一種分子為C_(18)H_(23),O_3N_3之鹻類及一種水溶性之植物鹼,名常山鹼(Dichroine)。經分析斷定,常山鹼之分子式為C_(16)H_((19)(21))N_3O_3,性質不固定,極易變為三種不同之同質異性
Zhao Chengjun, Fu Fengyong, Gao Yisheng, Chinese Herbal Medicine, Changshan’s Anti-Malition of the American Chemical Society, 1948, Volume 70, Volume 1765—1767 Abstract—The author of the present paper isolated Umbelliferon, 4-quinazolone from the traditional Chinese medicine (Dichroa febrifuga L.). One kind of molecule is C 18 H 23, O 3 N 3 steroids and a water-soluble plant base, named Dichroine. After analysis, it was concluded that the molecular formula of Changshanine is C_(16)H_((19)(21))N_3O_3, and its nature is not fixed, and it can easily become three different homogeneities.