Two new triterpenes from Commicarpus grandiflorus (A. Rich.) Standl. aerial parts exudate

Abstract

The exudate of Commicarpus grandiflorus (A. Rich.) Standl. flowering aerial parts was investigated for its chemical composition. Nine compounds were isolated, five triterpenes and four methylated flavones, of which two were new natural triterpenes, 2α,3β,11α-olean-18-en-2,3,11-triol (1) and 2α,3β-olean-12-en-2,3-diol-11-one (2) that were named commicarpotriol and commicarpodiol, respectively. Structural characterization was carried out using 1D, 2D NMR, and MS techniques and the antimicrobial activity of all isolates was evaluated.

GRAPHICAL ABSTRACT

Keywords:

• Commicarpus grandiflorus
• Nyctaginaceae
• triterpenes
• flavonoids
• antimicrobial activity

Acknowledgments

The authors would like to thank the Deanship of Scientific Research at Umm Al-Qura University for supporting this work by grant code 22UQU4320529DSR01.

Disclosure statement

No potential conflict of interest was reported by the authors.