Natural Indoles From the Bacterium Pseudovibrio denitrificans P81 Isolated From a Marine Sponge, Aaptos Species

Shu Yen Fang, Sheng Yuan Chen, You Ying Chen, Tsu Jen Kuo, Zhi Hong Wen, Yu Hsin Chen, Tsong Long Hwang, Ping Jyun Sung*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

8 Scopus citations

Abstract

A new natural indole, vibrindole B (1), together with known analogs, vibrindole A (2), trisindoline (3), norharmane (4), and 3-(hydroxyacetyl)indole (5), produced by the bacterium Pseudovibrio denitrificans P81, were isolated from a sponge, Aaptos species. The structures of indoles 1 to 5 were established by spectroscopic methods. The proposed biosynthetic pathway of 1 to 5 is also discussed, starting from tryptophan. Moreover, indoles 1 to 3 were found to exhibit cytotoxicity toward T24 tumor cells with IC50 values of 1.71 ± 0.11, 4.53 ± 0.14, and 2.26 ± 0.26 µM, respectively.

Original languageEnglish
JournalNatural Product Communications
Volume16
Issue number9
DOIs
StatePublished - 2021

Bibliographical note

Publisher Copyright:
© The Author(s) 2021.

Keywords

  • Aaptos
  • Pseudovibrio
  • cytotoxicity
  • sponge
  • vibrindole

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