New polyketides, paralactonic acids A–E produced by Paraconiothyrium sp. SW-B-1, an endophytic fungus associated with a seaweed, Chondrus ocellatus Holmes

Takuma Suzuki, Nanang Rudianto Ariefta, Takuya Koseki, Hiroshi Furuno, Eunsang Kwon, Hiroyuki Momma, Desi Harneti, Rani Maharani, Unang Supratman, Ken ichi Kimura, Yoshihito Shiono

    Research output: Contribution to journalArticlepeer-review

    17 Citations (Scopus)

    Abstract

    Five polyketides, paralactonic acids A-E (1–5) were isolated from Paraconiothyrium sp. SW-B-1, an endophytic fungus isolated from the seaweed, Chondrus ocellatus Holmes. Their structures were determined by various spectroscopic methods, predominantly by 2D NMR spectroscopic analyses. The absolute configurations of compounds 1–5 were determined by comparison of the experimental and calculated ECD spectra. Compound 5 showed moderate antibacterial activity and restored the growth of a mutant yeast strain inhibited by hyperactivated Ca2+-signaling.

    Original languageEnglish
    Pages (from-to)75-81
    Number of pages7
    JournalFitoterapia
    Volume132
    DOIs
    Publication statusPublished - Jan 2019

    All Science Journal Classification (ASJC) codes

    • Pharmacology
    • Drug Discovery

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