Kadcoccitones A and B, two new 6/6/5/5-fused tetracyclic triterpenoids from Kadsura coccinea.

Org Lett

State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, PR China.

Published: December 2012

AI Article Synopsis

  • Two new triterpenoid epimers, kadcoccitones A and B, along with a related compound called kadcoccitone C, were extracted from the plant Kadsura coccinea.
  • The compounds have a unique structure, featuring a complex tetracyclic ring system and a side chain.
  • Kadcoccitones A and C demonstrated anti-HIV-1 activity, with effective concentrations (EC50) of 47.91 and 32.66 μg/mL, indicating potential for further research in HIV treatment.

Article Abstract

A pair of new triterpenoid epimers, kadcoccitones A (1) and B (2), together with a new biogenetically related compound kadcoccitone C (3), were isolated from Kadsura coccinea. The epimers featured an unprecedented carbon skeleton with a 6/6/5/5-fused tetracyclic ring system unit and a C(9) side chain. Their structures were determined by spectroscopic data, ECD calculation, and single-crystal X-ray diffraction. Compounds 1 and 3 showed anti-HIV-1 activity with an EC(50) value of 47.91 and 32.66 μg/mL, respectively.

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http://dx.doi.org/10.1021/ol303168yDOI Listing

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Article Synopsis
  • Two new triterpenoid epimers, kadcoccitones A and B, along with a related compound called kadcoccitone C, were extracted from the plant Kadsura coccinea.
  • The compounds have a unique structure, featuring a complex tetracyclic ring system and a side chain.
  • Kadcoccitones A and C demonstrated anti-HIV-1 activity, with effective concentrations (EC50) of 47.91 and 32.66 μg/mL, indicating potential for further research in HIV treatment.
View Article and Find Full Text PDF

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