Further sesquiterpene lactones from Anthemis carpatica

Area of Science:

• Phytochemistry
• Natural Product Chemistry
• Organic Chemistry

Background:

• Anthemis carpatica is a plant species known for its diverse secondary metabolites.
• Previous research has identified various guaianolides and germacranolides from this species.
• The chemical investigation of medicinal plants is crucial for discovering novel bioactive compounds.

Purpose of the Study:

• To isolate and characterize new chemical constituents from the aerial parts of Anthemis carpatica.
• To expand the understanding of the chemical diversity of Anthemis carpatica.
• To identify novel germacranolide and guaianolide compounds.

Main Methods:

• Repeated phytochemical examination of the aerial parts of Anthemis carpatica.
• Isolation and purification of compounds using chromatographic techniques.
• Structure elucidation of isolated compounds using spectroscopic methods (e.g., NMR, MS).

Main Results:

• Identification of a new germacranolide: (E)-1alpha, 10beta-epoxy-3beta-acetoxy-6alpha-hydroxygermacra-4,11(13)-dien-12,8alpha-olide.
• Isolation of nine new highly oxygenated guaiadien-12,6alpha-olides of anthemolide and cumambrin type.
• Discovery of two guaianolides, 2beta-hydroxyepiligustrin and cumambrin B, not previously reported in this species, alongside six known guaianolides.

Conclusions:

• The chemical investigation of Anthemis carpatica yielded a significant number of new and known guaianolide and germacranolide compounds.
• This study contributes to the growing knowledge of the complex chemical profile of Anthemis carpatica.
• The newly identified compounds may warrant further investigation for potential biological activities.