A new degraded sesquiterpene was isolated from the marine actinomycete Streptomyces sp. 0616208. Its structure was elucidated as (1α; 4aα; 5α, 7β, 8aβ)-5, 8a-dimethyl-decahydrona- phthalene-1, 4a, 7-triol on th...A new degraded sesquiterpene was isolated from the marine actinomycete Streptomyces sp. 0616208. Its structure was elucidated as (1α; 4aα; 5α, 7β, 8aβ)-5, 8a-dimethyl-decahydrona- phthalene-1, 4a, 7-triol on the basis of spectroscopic data.展开更多
Aim To separate and identify chemical constituents of Ehinacea purpurea. Methods Five compounds were isolated from the plant using chromatography. Their structures were elucidated by spectroscopy. Results Five compoun...Aim To separate and identify chemical constituents of Ehinacea purpurea. Methods Five compounds were isolated from the plant using chromatography. Their structures were elucidated by spectroscopy. Results Five compounds were isolated and their structures were identified as 2, 6-dimethyl-7-octene-2, 3, 6-triol-2-O-β-D-gtucopyranoside (1), 7, 8-furocoumarin (2), 6-methoxy-7-hydroxycoumarin (3), caffeic acid (4), methyl catfeate (5), and ethyl catfeate(6). Conclusion All these compounds were obtained from the plant for the first time.展开更多
基金We are grateful to the National Natural Science Foundation of China (No. 29932030)the NationalHigh Technology Development Project (No. 2001AA624030)the Natural Science Foundationof Guangdong Province (No. 04300569) for financial support for this work.
文摘A new degraded sesquiterpene was isolated from the marine actinomycete Streptomyces sp. 0616208. Its structure was elucidated as (1α; 4aα; 5α, 7β, 8aβ)-5, 8a-dimethyl-decahydrona- phthalene-1, 4a, 7-triol on the basis of spectroscopic data.
文摘Aim To separate and identify chemical constituents of Ehinacea purpurea. Methods Five compounds were isolated from the plant using chromatography. Their structures were elucidated by spectroscopy. Results Five compounds were isolated and their structures were identified as 2, 6-dimethyl-7-octene-2, 3, 6-triol-2-O-β-D-gtucopyranoside (1), 7, 8-furocoumarin (2), 6-methoxy-7-hydroxycoumarin (3), caffeic acid (4), methyl catfeate (5), and ethyl catfeate(6). Conclusion All these compounds were obtained from the plant for the first time.