Labdanecaryophyllic acid, a novel cytotoxic C35 terpenoid from Calocedrus macrolepis var. formosana

Chin Lin Hsien, Mei Hwei Tseng, Ryh Nan Pan, Jang Yang Chang, Ching Chuan Kuo, Tzong Huei Lee, Yueh Hsiung Kuo

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Chemical investigation of the bark of Calocedrus macrolepis var. formosana, an endemic tree in Taiwan, has led to the isolation of a novel terpenoid 1. Compound 1 with a rare C35 skeleton constructed by a diterpene and a sesquiterpene moieties. Its structure was elucidated by spectroscopic interpretations. The anti-proliferation activity of 1 against human oral epidermoid carcinoma KB cells was evaluated, and the IC50 value was determined to be 9.2 ± 0.4 μM.

Original languageEnglish
Pages (from-to)515-517
Number of pages3
JournalTetrahedron Letters
Issue number4
Publication statusPublished - 2011 Jan 26

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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