Molecules (Mar 2020)

Unusual Polyhydroxylated Steroids from the Starfish <i>Anthenoides laevigatus</i>, Collected off the Coastal Waters of Vietnam

  • Alla A. Kicha,
  • Dinh T. Ha,
  • Timofey V. Malyarenko,
  • Anatoly I. Kalinovsky,
  • Roman S. Popov,
  • Olesya S. Malyarenko,
  • Tran T. T. Thuy,
  • Pham Q. Long,
  • Nguyen T. T. Ha,
  • Natalia V. Ivanchina

DOI
https://doi.org/10.3390/molecules25061440
Journal volume & issue
Vol. 25, no. 6
p. 1440

Abstract

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Four new polyhydroxylated steroids 1−4 were isolated along with two previously known related steroids 5 and 6 from the methanolic extract of the starfish Anthenoides laevigatus collected off the coastal waters of Vietnam. Structures of new compounds were substantially elucidated by one-dimensional (1D) and two-dimensional (2D) NMR spectroscopy and HRESIMS techniques. Heptaol 1 and hexaol 2 contain the common 5α-cholestane skeleton, while hexaol 3 and heptaol 4 have the rare among starfish steroid compounds 5β-cholestane skeleton. Compounds 1, 5, and 6 do not show cytotoxic effects against normal JB6 Cl41 and cancer HT-29 and MDA-MB-231 cells, however they inhibit cell proliferation and colony formation of cancer HT-29 and MDA-MB-231 cells.

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