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Iridoids and sfingolipids from Hedyotis diffusa.

Changfu Wang1, Ping Xin2, Youzhi Wang2

  • 1College of TCM, Guangdong Pharmaceutical University, No. 280 Outside Loop East Road of Higher Education Mega Center, Panyu District, 510006 Guangzhou, Guangdong Province, China.

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|November 11, 2017
PubMed
Summary
This summary is machine-generated.

Seven new compounds from Hedyotis diffusa were isolated and tested for anticancer activity. New compound 1 showed significant cytotoxicity against all tested cancer cell lines, with notable activity also observed for compound 2.

Keywords:
Asperuloside (PubChem CID: 84298)Asperulosidic acid (PubChem CID: 44423083)CeramidesCerebrosidesCytotoxicityGeniposidic acid (PubChem CID: 443354)Hedyotis diffusaIridoid glycosidesScandoside (PubChem CID: 21602023)

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Area of Science:

  • Natural Products Chemistry
  • Pharmacology
  • Medicinal Chemistry

Background:

  • Hedyotis diffusa is a traditional medicinal herb with potential therapeutic applications.
  • Phytochemical investigation of Hedyotis diffusa can lead to the discovery of novel bioactive compounds.
  • Cancer remains a major global health challenge, necessitating the search for new chemotherapeutic agents.

Purpose of the Study:

  • To isolate and characterize new chemical constituents from the aerial parts of Hedyotis diffusa.
  • To evaluate the in vitro cytotoxic activity of the isolated compounds against a panel of human cancer cell lines.

Main Methods:

  • Phytochemical isolation using chromatographic techniques.
  • Structure elucidation via physico-chemical constants and spectroscopic analyses (NMR, MS).
  • In vitro cytotoxicity assays using various human cancer cell lines (HeLa, HL-60, A459, HepG2, BCG-823, CNE-2, HCT15, PC-3).

Main Results:

  • Seven new compounds were identified: three iridoid glycosides (hedyoiridoidside A-C), two cerebrosides (hedyocerenoside F-G), and two ceramides (hedyoceramide A-B).
  • Six known iridoid glycosides were also isolated.
  • New compound 1 demonstrated significant cytotoxicity against all tested cancer cell lines (IC50: 9.5–28.2 μM).
  • New compound 2 exhibited potent cytotoxicity against seven cell lines (IC50: 15.8–26.2 μM).
  • Known compound 11 showed significant cytotoxicity against six cell lines (IC50: 16.5–40.4 μM).
  • Compounds 4-7, 12, and 13 displayed moderate cytotoxicity against certain cell lines.

Conclusions:

  • The aerial part of Hedyotis diffusa is a rich source of diverse chemical structures, including novel iridoid glycosides, cerebrosides, and ceramides.
  • New compounds 1 and 2, along with known compound 11, possess significant in vitro anticancer potential against a broad spectrum of human tumor cell lines.
  • Further investigation into the mechanism of action and structure-activity relationships of these compounds is warranted for potential drug development.