A new sesquiterpene trilactone, named bilobanol （1）, along with four known terpene trilactones （ginkgolide A, B, C and bilobalide） were isolated from the roots of Ginkgo biloba collected in Jiangsu Province, China...A new sesquiterpene trilactone, named bilobanol （1）, along with four known terpene trilactones （ginkgolide A, B, C and bilobalide） were isolated from the roots of Ginkgo biloba collected in Jiangsu Province, China. The structure elucidation was accomplished by 1D and 2D NMR methods, HR-ESI-MS, and CD spectrum.展开更多
Flavonoids and terpene trilactones, especially, ginkgo flavonglycosides, ginkgolides and bilobalides in leaves of ginkgo trees, need to be studied for effective application of these active components with high medical...Flavonoids and terpene trilactones, especially, ginkgo flavonglycosides, ginkgolides and bilobalides in leaves of ginkgo trees, need to be studied for effective application of these active components with high medical and health-care values. This study was aimed to provide scientific bases for genealogies selection and harvest season confirmation for Ginkgo biloba. A high-performance liquid chromatographic method(HPLC-ELSD)was developed to determine the contents of terpene trilactone and flavonoid of 36 ancient G. biloba genealogies from 19 provinces in China.The study indicated that the content gradually increased from April to August, and thereafter declined. Analysis of variance indicated that the contents of terpene trilactone, flavonoids, and their respective components had significant difference among 36 genealogies. The cluster analysis showed that No. 72(Xing'an, Guangxi), No. 58(Youyang, Chongqing), No. 82(Rugao, Jiangsu), No. 123(Huixian, Gansu), No. 99(Dujun, Guizhou),No. 10(Tai'an, Shandong) and No. 133(Mentougou, Beijing) genealogies have higher content of terpene trilactone and flavonoid. These results can help us to select superior variety containing high content of terpene trilactone and flavonoid.展开更多
文摘A new sesquiterpene trilactone, named bilobanol （1）, along with four known terpene trilactones （ginkgolide A, B, C and bilobalide） were isolated from the roots of Ginkgo biloba collected in Jiangsu Province, China. The structure elucidation was accomplished by 1D and 2D NMR methods, HR-ESI-MS, and CD spectrum.
基金provided by the Project of National Science and Technology Support Program (2012BAD21B04)
文摘Flavonoids and terpene trilactones, especially, ginkgo flavonglycosides, ginkgolides and bilobalides in leaves of ginkgo trees, need to be studied for effective application of these active components with high medical and health-care values. This study was aimed to provide scientific bases for genealogies selection and harvest season confirmation for Ginkgo biloba. A high-performance liquid chromatographic method(HPLC-ELSD)was developed to determine the contents of terpene trilactone and flavonoid of 36 ancient G. biloba genealogies from 19 provinces in China.The study indicated that the content gradually increased from April to August, and thereafter declined. Analysis of variance indicated that the contents of terpene trilactone, flavonoids, and their respective components had significant difference among 36 genealogies. The cluster analysis showed that No. 72(Xing'an, Guangxi), No. 58(Youyang, Chongqing), No. 82(Rugao, Jiangsu), No. 123(Huixian, Gansu), No. 99(Dujun, Guizhou),No. 10(Tai'an, Shandong) and No. 133(Mentougou, Beijing) genealogies have higher content of terpene trilactone and flavonoid. These results can help us to select superior variety containing high content of terpene trilactone and flavonoid.
