Saito Shizuka, Kubota Takaaki, Fukushi Eri, Kawabata Jun, Zhang Huiping, Kobayashi Jun'ichi
Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan.
Org Lett. 2007 Mar 29;9(7):1207-9. doi: 10.1021/ol0631455. Epub 2007 Mar 6.
[structure: see text]. Calyciphylline D (1), a novel Daphniphyllum alkaloid with an unprecedented fused-pentacyclic skeleton containing a 8-azatricyclo[4.2.1.0.4,8]nonane ring system, has been isolated from the leaves of Daphniphyllum calycinum (Daphniphyllaceae), and the structure and relative stereochemistry were elucidated on the basis of spectroscopic data.
[结构:见正文]。从 Calyciphyllum calycinum(虎皮楠科)的叶子中分离出了卡里西菲林 D(1),一种具有前所未有的稠合五环骨架且包含 8-氮杂三环[4.2.1.0.4,8]壬烷环系的新型虎皮楠生物碱,并根据光谱数据阐明了其结构和相对立体化学。