Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5262377 | Tetrahedron Letters | 2014 | 4 Pages |
Abstract
Two new highly oxygenated xanthones, named muchimangins E (1) and F (2), have been isolated from the root of Securidaca longepedunculata (Polygalaceae). Their structures were elucidated by the analyses of spectral data to be a novel xanthone with a diphenylmethyl substituent at C-2. Moreover, the structures of muchimangins B (4) and C (5) were revised by careful analysis of the spectral data and by comparing their NMR data with those of 1 and 2, to be xanthones with the diphenylmethyl substituent at C-2, not at C-4 reported previously.
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Authors
Dya Fita Dibwe, Suresh Awale, Shigetoshi Kadota, Hiroyuki Morita, Yasuhiro Tezuka,