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- Title
Unexpected Novel Pheophytin Peroxides from the Leaves of Biden pilosa.
- Authors
Tzong-Huei Lee; Chung-Kuang Lu; Yueh-Hsiung Kuo; Jir-Mehng Lo; Ching-Kuo Lee
- Abstract
Two new pheophytins, bidenphytins A (1) and B (2), with peroxide functionalities on ring E, were isolated from Biden pilosaLinn. var. radiataSch. Bip., a popular Taiwanese folk medicine. Also isolated were the following six known compounds: pheophytin a (3), (132R)-132-hydroxypheophytin a (4), (132S)-132-hydroxypheophytin a (5), (132R)-132-hydroxypheophytin b (6), (132S)-132-hydroxypheophytin b (7), and aristophyll-C (8). Their structures were elucidated by spectroscopic methods (UV, IR, 1D- and 2D-NMR) and by mass spectrometry (HR-FAB-MS). Possible biosynthetic pathways for 1 and 2 are proposed.
- Subjects
TAIWAN; PEROXIDES; CNIDARIA; MASS spectrometry
- Publication
Helvetica Chimica Acta, 2008, Vol 91, Issue 1, p79
- ISSN
0018-019X
- Publication type
Article
- DOI
10.1002/hlca.200890016