@article{oai:u-ryukyu.repo.nii.ac.jp:02005300,
 author = {荻原, 和仁 and 趙, 嘉平 and 比嘉, 松武 and 与儀, 誠一 and Ogihara, Kazuhito and Zhao, Jiaping and Higa, Matsutake and Yogi, Seiichi},
 issue = {54},
 journal = {琉球大学理学部紀要, Bulletin of the College of Science. University of the Ryukyus},
 month = {Oct},
 note = {The chemical constituents in the roots of Aristolochia liukiuensis Hatsusima were examined. Aristolactone (1), mansonone G (3), dehydrooxoperezinone (4), aristololactam D2 (6), 3,4 - methylenedioxy - 8 - methoxyphenanthrene - 1 - carboxylic acid (8), aristolochic acid 2 (10), and aristolochic acid 4 methyl ester (11) were isolated from the roots, in addition to already isolated constituents from the leaves and the stems, such as sitosterol (2), 2-hydroxy-1-methoxy-4,5-dioxo-6,7-dehydroaporphine (5), aristololactam A2 (7), aristolochic acid 1 (9), and sitosterolfl-β-glucoside (12). This is the first report of 4 in natural sources., 紀要論文},
 pages = {17--28},
 title = {リュウキュウウマノスズクサ(Aristolochia liukiuensis)の成分研究（第2報）},
 year = {1992}
}