A new eudesmanolide and a new aromatic derivative were isolated from the roots of Carpesium cernuun. Their structures were elucidated as 13-hydroxy-5,7(11)-eudesmadien-12,8-olide and 3-methyl-8-acetoxy-9,10-diisobuty...A new eudesmanolide and a new aromatic derivative were isolated from the roots of Carpesium cernuun. Their structures were elucidated as 13-hydroxy-5,7(11)-eudesmadien-12,8-olide and 3-methyl-8-acetoxy-9,10-diisobutyryloxy-p-cymene by spectral methods (EIMS, FAB-MS, 1D and 2D NMR).展开更多
Two new sesquiterpene lactone glycosides were isolated from the whole plant of Sonchus transcaspicus. Their structures were elucidated as 1β-O-β-D-glucopyranosy-5α, 6β H-eudesma-3-en-12, 6α-olide and 1β-O-β...Two new sesquiterpene lactone glycosides were isolated from the whole plant of Sonchus transcaspicus. Their structures were elucidated as 1β-O-β-D-glucopyranosy-5α, 6β H-eudesma-3-en-12, 6α-olide and 1β-O-β-D-glucopyranosy-15-O-(p-hydroxylphenylacetate)-5α, 6β H-eudesma-3, 11(13)-dien-12, 6α-olide by spectral methods (HRMS, 1D and 2D NMR).展开更多
Two new sesquiterpene lactone glycosides were isolated from the seeds of Carpesium macrocephalum. Their structures were elucidated as 2-O--D-glucopyranosy-5? 11?H- eudesma-4 (15)-en-12, 8?olide and 2 ?O--D-glucopyran...Two new sesquiterpene lactone glycosides were isolated from the seeds of Carpesium macrocephalum. Their structures were elucidated as 2-O--D-glucopyranosy-5? 11?H- eudesma-4 (15)-en-12, 8?olide and 2 ?O--D-glucopyranosy-5?H-eudesma-4 (15), 11 (13)- dien-12, 8?olide by spectral methods (HRMS, 1 D and 2 D NMR).展开更多
A new eudesmanoilde was isolated from the aerial parts of Carpesium macrocephalum. Its structure was elucidated as 2?acetoxy-11酘-eudesma-4-en-12, 8?olide by spectral methods.
基金This work was financially supported by the National Natural Science Foundation of China NO.29972017the Foundation of Ministry of Education of China for Doctoral Program NO.98073003National Key Basic Research Development Plan NO.G1998051113.
文摘A new eudesmanolide and a new aromatic derivative were isolated from the roots of Carpesium cernuun. Their structures were elucidated as 13-hydroxy-5,7(11)-eudesmadien-12,8-olide and 3-methyl-8-acetoxy-9,10-diisobutyryloxy-p-cymene by spectral methods (EIMS, FAB-MS, 1D and 2D NMR).
基金supported by the NNSFC(No.20372029 and No.20021001-QT Program)
文摘Two new sesquiterpene lactone glycosides were isolated from the whole plant of Sonchus transcaspicus. Their structures were elucidated as 1β-O-β-D-glucopyranosy-5α, 6β H-eudesma-3-en-12, 6α-olide and 1β-O-β-D-glucopyranosy-15-O-(p-hydroxylphenylacetate)-5α, 6β H-eudesma-3, 11(13)-dien-12, 6α-olide by spectral methods (HRMS, 1D and 2D NMR).
基金We are grateful for the NNSFC (No. 29972017) and the FMEC (No. 98073003).
文摘Two new sesquiterpene lactone glycosides were isolated from the seeds of Carpesium macrocephalum. Their structures were elucidated as 2-O--D-glucopyranosy-5? 11?H- eudesma-4 (15)-en-12, 8?olide and 2 ?O--D-glucopyranosy-5?H-eudesma-4 (15), 11 (13)- dien-12, 8?olide by spectral methods (HRMS, 1 D and 2 D NMR).
基金We are grateful for the financial support from the National Natural Science Foundation of China No.29972017the Foundation for Doctoral Program of Mnister of Education of China for No.98073003
文摘A new eudesmanoilde was isolated from the aerial parts of Carpesium macrocephalum. Its structure was elucidated as 2?acetoxy-11酘-eudesma-4-en-12, 8?olide by spectral methods.
