Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Aromatic Compounds: Overview01:25

Aromatic Compounds: Overview

11.8K
In general, the term ‘aromatic’ indicates a pleasant smell or fragrance from fresh flowers, freshly prepared coffee, etc. In the early history of organic chemistry, many benzene derivatives were isolated from the pleasant odor oils of the plants. For example, vanillin was isolated from the oil of vanilla, methyl salicylate from the oil of wintergreen, and cinnamaldehyde from the oil of cinnamon. They all had a pleasant odor; hence the name aromatic was given.
In 1825, Faraday...
11.8K
Nomenclature of Aromatic Compounds with a Single Substituent01:23

Nomenclature of Aromatic Compounds with a Single Substituent

8.3K
Benzene is the simplest aromatic hydrocarbon or arene. The IUPAC names for simple monosubstituted benzene derivatives are derived by adding the substituent's name as a prefix to the parent benzene. For example, halobenzene, where the halogen could be fluoro (F), chloro (Cl), bromo (Br), and iodo (I).
8.3K
NMR Spectroscopy of Aromatic Compounds01:14

NMR Spectroscopy of Aromatic Compounds

4.7K
Aromatic compounds can be identified or analyzed using proton NMR and carbon‐13 NMR. Typically, aromatic hydrogens or hydrogens directly bonded to the aromatic rings are strongly deshielded by the aromatic ring current. Therefore, they absorb in the range of 6.5–8.0 ppm in proton NMR spectra. For instance, aromatic hydrogens directly bonded to the benzene ring absorb at 7.3 ppm. However, aromatic hydrogens of larger rings absorb farther upfield or downfield than the ideal range.
4.7K
Aromatic Hydrocarbon Cations: Structural Overview01:18

Aromatic Hydrocarbon Cations: Structural Overview

3.5K
Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
Removing one hydrogen from the intervening CH2 group...
3.5K
Defenses Against Pathogens and Herbivores02:26

Defenses Against Pathogens and Herbivores

21.6K
Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.
21.6K
Structure and Bonding of Alkenes02:47

Structure and Bonding of Alkenes

17.4K
Olefins, which are unsaturated hydrocarbons containing one or more carbon–carbon double bonds, are broadly divided into alkenes and cycloalkenes. The general chemical formula of an alkene is CnH2n.
Doubly bonded carbons are sp2 hybridized and have a trigonal planar geometry. The double bond is composed of a σ bond formed by the overlap of hybrid orbitals and a π bond produced by the lateral overlap of unhybridized 2p orbitals on both the carbons. Each carbon atom is...
17.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Evaluation of the association of some circulating miRNA molecules in the metabolic syndrome.

Qatar medical journal·2025
Same author

Acaricidal Properties of Four Neem Seed Extracts (<i>Azadirachta indica</i>) on the Camel Tick <i>Hyalomma dromedarii</i> (<i>Acari: Ixodidae</i>).

Frontiers in veterinary science·2022
Same author

Plant cell cultures: An enzymatic tool for polyphenolic and flavonoid transformations.

Phytomedicine : international journal of phytotherapy and phytopharmacology·2022
Same author

Terpenoid bio-transformations and applications via cell/organ cultures: a systematic review.

Critical reviews in biotechnology·2019
Same author

Anti-inflammatory activity of highly oxygenated terpenoids from Achillea biebersteinii Afan.

Zeitschrift fur Naturforschung. C, Journal of biosciences·2016
Same author

A new trans-neoclerodane diterpene from Stachys aegyptiaca.

Natural product research·2013

Related Experiment Video

Updated: May 3, 2026

Lethality Bioassay Using Artemia salina L.
09:09

Lethality Bioassay Using Artemia salina L.

Published on: October 11, 2022

12.1K

Terpenes from Artemisia herba-alba.

Abou El-Hamd H Mohamed1, Abeer M Esmail2, Adila M El-Saade2

  • 1Department of Chemistry, Aswan-Faculty of Science, Aswan University, Aswan, Egypt. abouhassan68@yahoo.com

Zeitschrift Fur Naturforschung. C, Journal of Biosciences
|January 28, 2014
PubMed
Summary

Researchers identified a new monoterpene dimer from the Artemisia herba-alba plant. This discovery, alongside known compounds, expands our understanding of plant-derived natural products.

More Related Videos

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products
07:59

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products

Published on: October 4, 2019

11.9K
Author Spotlight: Discovering New Alkaloids in Plants with Advanced Mass Spectrometry Techniques
09:36

Author Spotlight: Discovering New Alkaloids in Plants with Advanced Mass Spectrometry Techniques

Published on: March 8, 2024

1.6K

Related Experiment Videos

Last Updated: May 3, 2026

Lethality Bioassay Using Artemia salina L.
09:09

Lethality Bioassay Using Artemia salina L.

Published on: October 11, 2022

12.1K
A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products
07:59

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products

Published on: October 4, 2019

11.9K
Author Spotlight: Discovering New Alkaloids in Plants with Advanced Mass Spectrometry Techniques
09:36

Author Spotlight: Discovering New Alkaloids in Plants with Advanced Mass Spectrometry Techniques

Published on: March 8, 2024

1.6K

Area of Science:

  • Phytochemistry
  • Natural Product Chemistry
  • Organic Chemistry

Background:

  • Artemisia herba-alba is a plant species with a history of traditional medicinal use.
  • The chemical constituents of Artemisia species are of interest for their potential biological activities.
  • Previous phytochemical studies have identified various compounds from this genus.

Purpose of the Study:

  • To isolate and characterize novel and known chemical constituents from the aerial parts of Artemisia herba-alba.
  • To contribute to the phytochemical knowledge of the Artemisia genus.

Main Methods:

  • Extraction of aerial parts using methylene chloride/methanol.
  • Chromatographic separation techniques for isolating compounds.
  • Structure elucidation using Nuclear Magnetic Resonance (NMR) spectroscopy (DEPT, COSY, HMQC, HMBC) and High-Resolution Mass Spectrometry (HRMS).

Main Results:

  • Isolation of a new monoterpene dimer.
  • Identification of one known monoterpene.
  • Characterization of three known sesquiterpene lactones.
  • Complete structural determination of all isolated compounds.

Conclusions:

  • The phytochemical investigation of Artemisia herba-alba led to the discovery of a new monoterpene dimer.
  • The study expands the repertoire of known compounds from this plant species.
  • Advanced spectroscopic methods were crucial for the successful structure elucidation.