Production of new ent-hardwickiic acid derivatives by microbial transformation and their antifungal activity.
Fitoterapia
; 173: 105810, 2024 Mar.
Article
en En
| MEDLINE
| ID: mdl-38163448
ABSTRACT
Ent-hardwickiic acid is the major compound of Copaifera pubiflora Benth oleoresin traditionally used in Brazilian folk medicine as an antimicrobial agent. Microbial transformation of ent-hardwickiic by Cunninghamella elegans ATCC 10028b resulted in two and five antifungal derivatives (four new ones) produced in the Czapek modified and Koch's K1 media, respectively. The derivatives were isolated and their structures were determined by spectral analysis, namely 1D/2D NMR and HR-ESIMS. All compounds were tested for cytotoxic and antifungal activities and they were not cytotoxic to the tested cell lines, but all derivatives showed fungicidal activity against Candida glabrata and Candida krusei, which have emerged as resistant to fluconazole. One of the yet unreported biotransformation products displayed the strongest activity with minimum fungicidal concentration values smaller than the other compounds, including fluconazole.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Fluconazol
/
Diterpenos
/
Antifúngicos
Idioma:
En
Revista:
Fitoterapia
Año:
2024
Tipo del documento:
Article
País de afiliación:
Brasil