| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5219030 | Tetrahedron | 2012 | 5 Pages |
Abstract
Three novel indole alkaloids, alsmaphorazines C (1)-E (3), were isolated from the leaves of Alstonia pneumatophora (Apocynaceae) and their structures were determined on the basis of the 2D NMR and MS spectral analyses. The absolute configurations of 1 and 3 were elucidated by applying a modified Mosher's method and CD spectral analysis. These alkaloids possessed novel ring skeletons containing an octahydropyrrolo[2,3-b]pyrrole unit.
Graphical abstractDownload full-size image
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Koichiro Koyama, Yusuke Hirasawa, Alfarius E. Nugroho, Toshio Kaneda, Teh Chin Hoe, Kit-Lam Chan, Hiroshi Morita,