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Three New Highly Oxygenated Germacranolides from Carpesium Divaricatum and Their Cytotoxic Activity.

ABSTRACT: Three new highly oxygenated (2?4), and two known (1 and 5) germacranolides, were isolated from the whole plant of Carpesium divaricatum. The planar structures and relative configurations of the new compounds were determined by detailed spectroscopic analysis. The absolute configuration of 1 was established using the circular dichroism (CD) method and X-ray diffraction, and the stereochemistry of the new compounds 2?4 were determined using similar CD spectra with 1. The new compound 2 and the known compound 5 exhibited potent cytotoxicity against hepatocellular cancer (Hep G2) and human cervical cancer (HeLa) cells, superior to those of the positive control cis-platin.

SUBMITTER: Zhang T

PROVIDER: S-EPMC6102670 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature

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Three New Highly Oxygenated Germacranolides from Carpesium Divaricatum and Their Cytotoxic Activity.

Zhang Tao T Si Jin-Guang JG Zhang Qiu-Bo QB Chen Jia-Huan JH Ding Gang G Zhang Hong-Wu HW Jia Hong-Mei HM Zou Zhong-Mei ZM

Molecules (Basel, Switzerland) 20180503 5

Three new highly oxygenated (2⁻4), and two known (1 and 5) germacranolides, were isolated from the whole plant of Carpesium divaricatum. The planar structures and relative configurations of the new compounds were determined by detailed spectroscopic analysis. The absolute configuration of 1 was established using the circular dichroism (CD) method and X-ray diffraction, and the stereochemistry of the new compounds 2⁻4 were determined using s ...[more]

PMID: 29751555

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New Highly Oxygenated Germacranolides from Carpesium divaricatum and their Cytotoxic Activity.

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