Related Experiment Video
Updated: May 5, 2026
![Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F60786.jpg&w=3840&q=50)
07:12
Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
5.7K
Three new diphenylpropanes from Celastrus hindsii
Xian Qing Hu1, Wei Han, Zhu Zhen Han
1School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
Archives of Pharmacal Research
|December 3, 2013
Summary
Researchers isolated new diphenylpropanes and an arylpropyl quinone from Celastrus hindsii. These compounds were tested for their potential to inhibit the growth of human tumor cell lines.
Area of Science:
- Natural Products Chemistry
- Medicinal Chemistry
- Pharmacognosy
Background:
- Celastrus hindsii is a plant source of bioactive natural products.
- Diphenylpropanes and arylpropyl quinones are classes of compounds with diverse biological activities.
Purpose of the Study:
- To isolate and characterize new compounds from Celastrus hindsii.
- To evaluate the in vitro cytotoxic activity of isolated compounds against human tumor cell lines.
Main Methods:
- Isolation of compounds using chromatographic techniques.
- Structure elucidation using 1D and 2D Nuclear Magnetic Resonance (NMR) spectroscopy and Mass Spectrometry (MS).
- Cytotoxicity evaluation using the MTT assay.
Main Results:
- Three new diphenylpropanes, Hindsiipropane A-C (1-3), and one known arylpropyl quinone, Griffithane D (4), were isolated.
- Compound 4 represents the first isolation of an arylpropyl quinone from this genus.
- The cytotoxic effects of compounds 1-4 were assessed against A549, HCT116, MDA-MB-231, and BEL7404 cell lines.
Conclusions:
- The study successfully identified novel diphenylpropanes and a known arylpropyl quinone from Celastrus hindsii.
- The isolated compounds demonstrated varying degrees of in vitro cytotoxicity against tested human cancer cell lines, suggesting potential for further investigation.
More Related Videos
Related Concept Videos
02:05Prochirality
4.0K
The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...
4.0K
![[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2Ffiles%2Fmedia%2Fscience-education%2Fscience-education-thumbs%2F12422.jpg&w=3840&q=75)
01:21[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement
2.4K
The Cope rearrangement is classified as a [3,3] sigmatropic shift in 1,5-dienes, leading to a more stable, isomeric 1,5-diene. The reaction involves a concerted movement of six electrons, four from two π bonds and two from a σ bond, via an energetically favorable chair-like transition state.
2.4K
02:29Conformations of Cycloalkanes
12.3K
Adolf von Baeyer attempted to explain the instabilities of small and large cycloalkane rings using the concept of angle strain — the strain caused by the deviation of bond angles from the ideal 109.5° tetrahedral value for sp3 hybridized carbons. However, while cyclopropane and cyclobutane are strained, as expected from their highly compressed bond angles, cyclopentane is more strained than predicted, and cyclohexane is virtually strain-free. Hence, Baeyer’s theory that...
12.3K
![[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2Ffiles%2Fmedia%2Fscience-education%2Fscience-education-thumbs%2F12417.jpg&w=3840&q=75)
01:16[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction
8.2K
The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.
8.2K
01:27Benzene to Phenol via Cumene: Hock Process
3.6K
The synthesis of phenol from benzene via cumene and cumene hydroperoxide is called the Hock process. First, a Friedel–Crafts alkylation reaction of benzene with propene gives cumene. Then cumene forms cumene hydroperoxide via a radical chain reaction. In the chain initiation step, the benzylic hydrogen is abstracted to give a benzylic radical. In the chain propagation step, the benzylic radical reacts with an oxygen diradical to form a cumene hydroperoxide radical. The cumene...
3.6K
01:57Preparation of Diols and Pinacol Rearrangement
3.2K
Compounds bearing two hydroxyl groups are known as diols. When the hydroxyl groups are located on adjacent carbon atoms, the diols are called vicinal diols or glycols. Under acidic conditions, vicinal diols undergo a specific reaction called pinacol rearrangement.
The reaction begins with transferring a proton from the acid catalyst to one of the hydroxyl groups, producing an oxonium ion.
The reaction begins with transferring a proton from the acid catalyst to one of the hydroxyl groups, producing an oxonium ion.
3.2K