A new furanoeremophilane and a new eudesmane were isolated from the roots of Ligularia veitchiana. Their structures were elucidated as 1b, 10b-epoxy-6b-isobutyryloxy-9-oxo-furanoeremophilane and 8a-hydroxy-4 (15), 11...A new furanoeremophilane and a new eudesmane were isolated from the roots of Ligularia veitchiana. Their structures were elucidated as 1b, 10b-epoxy-6b-isobutyryloxy-9-oxo-furanoeremophilane and 8a-hydroxy-4 (15), 11-eudesmadiene by spectroscopic methods.展开更多
Chemical investigation of L. tongolensis afforded two new eremophilenolides, which were identified as 3β-（2＇-methylbutanoyloxy）-8βH-eremophil-7（11）-en-12, 8α（14, 6α）-diolide （1）and 8βH-eremophil-3, 7（11...Chemical investigation of L. tongolensis afforded two new eremophilenolides, which were identified as 3β-（2＇-methylbutanoyloxy）-8βH-eremophil-7（11）-en-12, 8α（14, 6α）-diolide （1）and 8βH-eremophil-3, 7（11）-dien-12, 8α （14, 6α）-diolide （2）. Their structures were established by spectroscopic methods including 2D NMR experiments.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supported by the National Natural Science Foundation of China(No.29972017)
文摘A new furanoeremophilane and a new eudesmane were isolated from the roots of Ligularia veitchiana. Their structures were elucidated as 1b, 10b-epoxy-6b-isobutyryloxy-9-oxo-furanoeremophilane and 8a-hydroxy-4 (15), 11-eudesmadiene by spectroscopic methods.
基金This work was supported by the NNSFC(No.20372029 and No,20021001)by the Key Project of Chinese Ministry of Education(No.104178).
文摘Chemical investigation of L. tongolensis afforded two new eremophilenolides, which were identified as 3β-（2＇-methylbutanoyloxy）-8βH-eremophil-7（11）-en-12, 8α（14, 6α）-diolide （1）and 8βH-eremophil-3, 7（11）-dien-12, 8α （14, 6α）-diolide （2）. Their structures were established by spectroscopic methods including 2D NMR experiments.
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.
