Structure-activity relationships study of neolamellarin A and its analogues as hypoxia inducible factor-1 (HIF-1) inhibitors

Bioorg Med Chem Lett. 2019 Aug 15;29(16):2327-2331. doi: 10.1016/j.bmcl.2019.06.017. Epub 2019 Jun 15.

Abstract

The novel marine pyrrole alkaloid neolamellarin A derived from sponge has been shown to inhibit hypoxia-induced HIF-1 activity. In this work, we designed and synthesized neolamellarin A and its series of derivatives by a convergent synthetic strategy. The HIF-1 inhibitory activity and cytotoxicity of these compounds were evaluated in Hela cells by dual-luciferase reporter gene assay and MTT assay, respectively. The results showed that neolamellarin A 1 (IC50 = 10.8 ± 1.0 μM) and derivative 2b (IC50 = 11.9 ± 3.6 μM) had the best HIF-1 inhibitory activity and low cytotoxicity. Our SAR research focused on the effects of key regions aliphatic carbon chain length, aromatic ring substituents and C-7 substituent on biological activity, providing a basis for the subsequent research on the development of novel pyrrole alkaloids as HIF-1 inhibitors and design of small molecule probes for target protein identification.

Keywords: Anti-tumor; Hypoxia inducible factor (HIF)-1; Marine alkaloids; Neolamellarin A; Structure-activity relationship.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antineoplastic Agents / chemical synthesis
  • Antineoplastic Agents / chemistry
  • Antineoplastic Agents / pharmacology*
  • Cell Proliferation / drug effects
  • Cell Survival / drug effects
  • Dose-Response Relationship, Drug
  • Drug Screening Assays, Antitumor
  • HeLa Cells
  • Humans
  • Hypoxia-Inducible Factor 1 / antagonists & inhibitors*
  • Hypoxia-Inducible Factor 1 / metabolism
  • Molecular Structure
  • Pyrroles / chemical synthesis
  • Pyrroles / chemistry
  • Pyrroles / pharmacology*
  • Structure-Activity Relationship

Substances

  • Antineoplastic Agents
  • Hypoxia-Inducible Factor 1
  • Pyrroles
  • neolamellarin A