Cyclopeptides from the Sponge Stylissa flabelliformis

  • Oh Seok Kwon
  • , Chang Kwon Kim
  • , Woong Sub Byun
  • , Joonseok Oh
  • , Yeon Ju Lee
  • , Hyi Seung Lee
  • , Chung J. Sim
  • , Dong Chan Oh
  • , Sang Kook Lee
  • , Ki Bong Oh
  • , Jongheon Shin

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Three new cyclopeptides, phakellistatins 20-22 (1-3), as well as 10 known cyclopeptides of the same structural class were isolated from the tropical sponge Stylissa flabelliformis. By a combination of chemical and spectroscopic methods, the structures of the new compounds were determined to be an epimeric mixture of cycloheptapeptides (1) and two epimeric cyclodecapeptides (2 and 3) related to the phakellistatins. The cyclopeptides were evaluated for in vitro cytotoxicity against a variety of cancer cell lines, and compounds 2 and 3 exhibited significant activity.

Original languageEnglish
Pages (from-to)1426-1434
Number of pages9
JournalJournal of Natural Products
Volume81
Issue number6
DOIs
StatePublished - 22 Jun 2018

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