Itokawa H, Totsuka N, Morita H, Takeya K, Iitaka Y, Schenkel E P, Motidome M
Department of Pharmacognosy, Tokyo College of Pharmacy, Japan.
Chem Pharm Bull (Tokyo). 1990 Dec;38(12):3384-8. doi: 10.1248/cpb.38.3384.
New antitumor clerodane diterpenes, named casearins A-F, have been isolated from the leaves of Casearia sylvestris Sw. (Flacourtiaceae). These structures have been completely elucidated by two dimensional nuclear magnetic resonance, circular dichroism spectroscopy, X-ray analysis, and chemical evidences.
从野生嘉赐树（大风子科）的叶子中分离出了名为casearins A-F的新型抗肿瘤克罗烷二萜。这些化合物的结构已通过二维核磁共振、圆二色光谱、X射线分析和化学证据得到了完全阐明。
