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001-es BibID:	BIBFORM113500
035-os BibID:	(Scopus)85160448951 (WoS)000995924400001
Első szerző:	Li, Yan-He
Cím:	Isolation and characterization of three pairs of verrucosidin epimers from the marine sediment?derived fungus Penicillium cyclopium and confguration revision of penicyrone A and related analogues / Yan?He Li, Attila Mándi, Hong?Lei Li, Xiao?Ming Li, Xin Li, Ling?Hong Meng, Sui?Qun Yang, Xiao?Shan Shi, Tibor Kurtán, Bin?Gui Wang
Dátum:	2023
ISSN:	2662-1746
Megjegyzések:	Verrucosidins, a methylated alpha-pyrone class of polyketides rarely reported upon, have been implicated in one or more neurological diseases. Despite the significance of verrucosidins as neurotoxins, the absolute configurations of most of the derivatives have not been accurately characterized yet. In this study, three pairs of C-9 epimeric verrucosidin derivatives, including the known compounds penicyrones A and B (1a/1b) and 9-O-methylpenicyrones A and B (2a/2b), the new compounds 9-O-ethylpenicyrones A and B (3a/3b), together with the related known derivative verrucosidin (4), were isolated and identified from the culture extract of Penicillium cyclopium SD-413, which was obtained from the marine sediment collected from the East China sea. Their structures were established based on an in-depth analysis of nuclear magnetic resonances (NMR) and mass spectroscopic data. Determination of the absolute configurations of these compounds was accomplished by Mosher's method and time-dependent density functional theory (TDDFT) calculations of electronic circular dichroism (ECD) and optical rotation (OR). The configurational assignment of penicyrone A demonstrated that the previously reported C-6 absolute configuration of verrucosidin derivatives needs to be revised from (6S) to (6R). The 9R/9S epimers of compounds 1-3 were found to exhibit growth inhibition against some pathogenic bacteria, indicating that they have potential as lead compounds for the creation of antimicrobial agents.
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Marine Life Science & Technology. - 5 : 2 (2023), p. 223-231. -
További szerzők:	Mándi Attila (1981-) (vegyész, német szakfordító) Li, Hong-Lei Li, Xiao-Ming Li, Xin Meng, Ling-Hong Yang, Sui-Qun Shi, Xiao-Shan Kurtán Tibor (1973-) (vegyész, angol szakfordító) Wang, Bin-Gui
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM090895
035-os BibID:	(cikkazonosító)104477
Első szerző:	Yang, Sui-Qun
Cím:	Separation and configurational assignment of stereoisomeric phenalenones from the marine mangrove-derived fungus Penicillium herquei MA-370 / Sui-Qun Yang, Attila Mándi, Xiao-Ming Li, Hui Liu, Xin Li, Sándor Balázs Király, Tibor Kurtán, Bin-Gui Wang
Dátum:	2021
ISSN:	0045-2068
Megjegyzések:	Eight phenalenone derivatives, including four new compounds, aceneoherqueinones A and B (1 and 2), (+)-aceatrovenetinone A (3a), and (+)-aceatrovenetinone B (3d), along with four known congeners, (?)-aceatrovenetinone A (3b), (?)-aceatrovenetinone B (3c), (?)-scleroderolide (4a), and (+)-scleroderolide (4b), were characterized from the marine mangrove-derived fungus Penicillium herquei MA-370. Among them, compounds 1 and 2 are rare phenalenone derivatives featuring cyclic ether unit between C-5 and C-2·. All of these compounds were subjected to chiral HPLC analysis, and the unstable stereoisomers 3a?3d, containing configurationally labile chirality centers, were characterized by online HPLC-ECD measurements supported with TDDFT-ECD calculations. The structures of these compounds were elucidated by detailed analysis of their NMR and mass spectroscopic data, and the absolute configuration of compound 1 was confirmed by X-ray diffraction analysis, while those of compounds 2 and 3a?3d were determined by TDDFT-ECD calculations of their ECD spectra. All of the isolated compounds were tested for the inhibitory activity against angiotensin-I-converting enzyme (ACE), and compounds 1 and 2 displayed activity with IC50 values 3.10 and 11.28 ?M, respectively. The intermolecular interaction and potential binding sites of 1 and 2 with ACE were elaborated by molecular docking, showing that compound 1 bound well with ACE via hydrogen interactions with residues Ala261, Gln618, Trp621, and Asn624, while compound 2 interacted with residues Asp358 and Tyr360.
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Marine fungi Penicillium herquei Phenalenone derivatives ACE inhibitory activity Molecular docking
Megjelenés:	Bioorganic Chemistry. - 106 (2021), p. 1-9. -
További szerzők:	Mándi Attila (1981-) (vegyész, német szakfordító) Li, Xiao-Ming Liu, Hui Li, Xin Király Sándor Balázs (1991-) (vegyész) Kurtán Tibor (1973-) (vegyész, angol szakfordító) Wang, Bin-Gui
Pályázati támogatás:	NKFI K 120181 Egyéb
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