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Related Concept Videos

Antiasthma Drugs: Methylxanthines01:24

Antiasthma Drugs: Methylxanthines

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Theophylline, a member of the methylxanthine class of bronchodilators, has long been used in asthma management. While its exact mechanism of action is not fully understood, it is believed to have multiple effects on various cellular processes.
Theophylline is thought to inhibit phosphodiesterase enzymes, increasing intracellular levels of cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP). This rise in cAMP and cGMP concentrations stimulates cardiac function,...
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Updated: May 6, 2026

Transient Expression in Nicotiana Benthamiana Leaves for Triterpene Production at a Preparative Scale
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[Two new taraxerane triterpenoids from mastic].

Zhi-Qiang Zhao1, Xue-Rui An1, Tian-Zhi Li2

  • 1Key Lab of Natural Product Chemistry and Application at Universities of Education Department of Xinjiang Uygur Autonomous Region, School of Chemistry and Chemical Engineering, Yili Normal University Yining 835000, China.

Zhongguo Zhong Yao Za Zhi = Zhongguo Zhongyao Zazhi = China Journal of Chinese Materia Medica
|September 4, 2025
PubMed
Summary
This summary is machine-generated.

Three new taraxerane nortriterpenoids were isolated from mastic. Compound 1 showed significant anti-inflammatory activity, comparable to dexamethasone, by inhibiting nitric oxide production in cells.

Area of Science:

  • Natural Product Chemistry
  • Pharmacology
  • Organic Chemistry
Keywords:
anti-inflammationchemical constituentmasticnortriterpenoidtaraxerane

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