| 标题 |
[求助补充材料] 4α-METHYLVERNOSTEROL AND OTHER STEROLS FROM VERNONIA ANTHELMINTICA SEEDS
驱虫斑鸠菊种子中的4 α-甲基斑鸠菊甾醇和其他甾醇
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Abstract-A novel 4c+methylsterol isolated from the seeds of Yernonia u~~~e~~~~~~c~ was shown to have the structure ~-methyl-5~-sti~asta-8,i4,Zq2~)Z-t~en-3~-ol (4a-methylvernosterol) based on spectroscopic methods. The 4- demethylsterol and 4,4-dimethylsterol fractions from the seed material were also investigated. The 4-demethylsterol fraction contained 5a-stigmasta-8,14,24(24’)2-trien-3fi-ol (vernosterol) and 5a-stigmasta-7,24(24’)2-dien-38-01 (avenasterol) as the dominant sterols. 4a-Methylvernosterol is the possible intermediate in the biosynthesis of vernosterol in K anthelmintica seeds. |
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(2025-6-4)
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