Two new guaiane sesquiterpenes from the fruiting bodies of Lactarius Deliciosus

Abstract

Two new guaiane sesquiterpenes, 7-(1-hydroxyethyl)-4-methyl-1-azulenecarboxaldehyde (1) and 7-isopropenyl-4-methyl-1-azulenecarboxylic acid (2), together with 5 known sesquiterpenes, were isolated from the fruiting bodies of Lactarius deliciosus. All structures were elucidated based on extensive spectroscopic methods, including 1 D and 2 D-NMR spectroscopy and high resolution mass spectrometry.

Graphical Abstract

Keywords:

• Russulaceae
• Lactarius deliciosus
• guaiane sesquiterpenes
• HR-ESIMS

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was financially supported by grant from the National Key R&D Program of China (No. 2018YFC0311002), the National Natural Science Foundation of China (Nos. 81973201 & 81860613) and the Fundamental Research Funds for the Central Universities (No. 2042019kf0228).