Stereochemical analysis of leubethanol, an anti-TB-active serrulatane, from Leucophyllum frutescens.
Stereochemical analysis of leubethanol, an anti-TB-active serrulatane, from Leucophyllum frutescens.
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DOI:
10.1021/np2000667
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发表时间:
2011-09-23
影响因子:
5.1
通讯作者:
Waksman N
中科院分区:
文献类型:
--
作者:
Molina-Salinas GM;Rivas-Galindo VM;Said-Fernández S;Lankin DC;Muñoz MA;Joseph-Nathan P;Pauli GF;Waksman N
Bioactivity-guided fractionation of the methanolic root bark extract of Leucophyllum frutescens (Berl.) I.M. Johnst. led to the identification of leubethanol (1), a new serrulatane-type diterpene with activity against both multi drug-resistant and drug-sensitive strains of virulent Mycobacterium tuberculosis. Leubethanol (1) was identified by 1D/2D NMR data, as a serrulatane closely related to erogorgiane (2), and exhibited anti-TB activity with minimum inhibitory concentrations in the range 6.25–12.50 µg/mL. Stereochemical evidence for 1 was gleaned from 1D and 2D NOE experiments, 1H-NMR full spin analysis, as well as by comparison of the experimental vibrational circular dichroism (VCD) spectrum to density functional theory calculated VCD spectra of two diastereomers.
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影响因子:
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作者:
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通讯作者:
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