Structures and absolute configurations of butenolide derivatives from the isopod-associated fungus Pidoplitchkoviella terricola.
Phytochemistry
; 193: 112981, 2022 Jan.
Article
en En
| MEDLINE
| ID: mdl-34653910
ABSTRACT
In this research, twenty aromatic and branched aliphatic polyketides, including seven previously undescribed butenolide derivatives, piterriones A-G and one known analogue, along with twelve known altenusin derivatives, were isolated from the isopod-associated fungus Pidoplitchkoviella terricola. Their structures were elucidated by analysis of NMR (1D and 2D) and mass spectrometry data, and their absolute configurations were determined by Mosher's method, microscale derivatization, and comparison of their specific rotations and ECD spectra. Dihydroaltenuene B exhibited mushroom tyrosinase inhibitory activity with an IC50 value of 38.33 ± 1.59 µM, which was comparable to that of the positive control, kojic acid (IC50 = 39.72 ± 1.34 µM). A molecular-docking study disclosed the hydrogen bonding interactions between the 3-OH and 4'-OH of dihydroaltenuene B and the His244, Met280 and Gly281 residues of tyrosinase.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Ascomicetos
/
Isópodos
Tipo de estudio:
Risk_factors_studies
Límite:
Animals
Idioma:
En
Revista:
Phytochemistry
Año:
2022
Tipo del documento:
Article
País de afiliación:
China