. 2024 Aug 24;13(9):798. doi: 10.3390/antibiotics13090798
© 2024 by the authors.
Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Scheme 1.
The synthesis of tricyclic flavonoids 5a–g.