C-13 NMR AND STRUCTURE OF CHLOROXANTHONES FROM LICHENS
C-13 NMR AND STRUCTURE OF CHLOROXANTHONES FROM LICHENS
复制标题
DOI：
10.1016/0040-4020(78)88377-x
复制
发表时间：
1978-01-01
期刊：
影响因子：
2.1
通讯作者：
HOFLE, G
中科院分区：
文献类型：
--
作者：
HUNECK, S;HOFLE, G
From a Pertusaria sp. (lichen) the following chloroxanthones were isolated and structurally elucidated: 2,4-dichloro-3,6-di-0-methylnorlichexanthone, 2,5-dichloro-3,6-di-0-methylnorlichexanthone and 2,4,5-trichloro-3,6-di-0-methylnorlichexanthone. Revised structures are given for thuringione (2,4,5-trichloro-3-0-methylnorlichexanthone), arthothelin (2,4,5-trichloronorlichexanthone) and vinetorin (5-chloro-3-0-methylnorlichexanthone). The synthesis of 7-chloronorlichexanthone is described and detailed 13C-NMR data are reported for 9 chloroxanthones. Erythrommone from Haematomma erythromma (Nyl.) Zahlbr. is identical with 2,4,5-trichloro-3,6-di-0-acetylnorlichexanthone.
