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Group 17 elements, known as halogens, are nonmetals. At room temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine a solid. Astatine is a highly unstable radioactive element, so currently, most of its properties are unknown due to its short half-life. Tennessine is a synthetic element also predicted to be in this group.
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Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade
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Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade

Published on: August 14, 2019

[Flavones from Helichrysi flos syn].

Wenjuan Liu1, Lijun Wu

  • 1Shanxi Biological Application Vocational Technical College, Taiyuan 030031, China.

Zhongguo Zhong Yao Za Zhi = Zhongguo Zhongyao Zazhi = China Journal of Chinese Materia Medica
|September 24, 2009
PubMed
Summary
This summary is machine-generated.

Seven flavone compounds were isolated from Helichrysi flos syn. Compounds 2, 4-7 represent novel chemical constituents for the Helichrysum genus, expanding knowledge of its phytochemistry.

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Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade
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Area of Science:

  • Phytochemistry
  • Natural Product Chemistry
  • Organic Chemistry

Context:

  • Helichrysi flos syn. is a plant source with potential medicinal properties.
  • Understanding the chemical constituents of medicinal plants is crucial for drug discovery and development.
  • Previous research on Helichrysi flos syn. may not have fully characterized its flavone content.

Purpose:

  • To isolate and elucidate the chemical structures of compounds from Helichrysi flos syn.
  • To identify novel compounds within the Helichrysum genus.
  • To contribute to the phytochemical database of Helichrysi flos syn.

Summary:

  • Seven flavone compounds were successfully isolated from the methanol extract of Helichrysi flos syn.
  • The isolated compounds include quercetin-3-O-beta-D-glucopyranoside, apigenin-7-O-beta-D-gentiobioside, quercetin-3-O-rutinoside, apigenin-7,4'-di-O-beta-D-glucopyranoside, kaempferol-3,4'-di-O-beta-D-glucopyranoside, quercetin-3,3'-di-O-beta-D-glucopyranoside, and apigenin-7-O-beta-D-glucopyranosiduronic acid methyl ester.
  • Compounds 2, 4-7 were identified as new constituents for the Helichrysum genus.

Impact:

  • This study expands the known phytochemical profile of Helichrysi flos syn.
  • The identification of novel compounds provides a basis for further pharmacological investigations.
  • The findings contribute to the chemotaxonomic understanding of the Helichrysum genus.