Journal of Applied Phycology

, Volume 30, Issue 6, pp 3379–3386 | Cite as

Neoiriepentaol and nangenyne, halogenated diterpenoid and C15-acetogenin from red alga Laurencia nangii Masuda collected in Borneo

  • Takashi Kamada
  • Chin-Soon Phan
  • Charles Santhanaraju VairappanEmail author
8th Asian Pacific Phycological Forum


The red algal genus Laurencia is a prolific producer of halogenated secondary metabolites. A new tricyclic dibrominated diterpenoid, neoiriepentaol (1) and chlorinated C15-acetogenin, nangenyne (2), along with two known terpenoids, neoirietetraol (3) and dactyloxene A (4), were isolated from methanol crude extract of red alga Laurencia nangii. The structures were established based on one- and two-dimensional nuclear magnetic resonance (NMR), Fourier-transform infrared (FTIR), and high-resolution electrospray ionization mass spectrometry (HRESIMS) data. These compounds were screened against seven species of marine fungi. Compounds 13 exhibited activity against Lagenidium thermophilum and Haliphthoros sabahensis. Potent activity was showed by 1 with L. thermophilum hyphal inhibition at MIC value of 12.5 μg mL−1 and hyphal motility was observed at 50 μg mL−1 within 24 h.


Neoirieane-type Brominated diterpenoid C15-acetogenin Laurencia nangii Red alga 



The authors would like to thank Prof. Dr. Kishio Hatai (Universiti Malaysia Sabah) for providing fungal strains and assisting anti-fungal assay.


This work was financially supported by the Sabah Biodiversity Centre [GL0070] and Matsuken Kogyo Corporation [GL00155].

Supplementary material

10811_2018_1502_MOESM1_ESM.docx (1.8 mb)
ESM 1 (DOCX 1810 kb)


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© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Laboratory of Natural Products Chemistry, Department of Materials and Life Science, Faculty of Science and TechnologyShizuoka Institute of Science and TechnologyFukuroiJapan
  2. 2.Laboratory of Natural Products Chemistry, Institute for Tropical Biology and ConservationUniversiti Malaysia SabahKota KinabaluMalaysia

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