Erratum: Secondary Metabolites from Aspergillus fumigatus, an Endophytic Fungus from the Liverwort Heteroscyphus tener (Steph.) Schiffn.

Abstract

Recently, the nuclear‐spin‐induced optical rotation (NSOR) and circular dichroism (NSCD) for liquids were discovered and extensively studied and developed. However, so far, nuclear‐spin‐induced magnetic circular dichroism in the IR region (IR‐NSCD) has not been explored, even though all polyatomic molecules exhibit extensive IR spectra. Herein, IR‐NSCD is proposed and discussed theoretically. The results indicate that in favorable conditions the IR‐NSCD angle may be much larger than the NSOR angle in the UV/Vis region due to a vibrational resonance effect and can be measurable by using the NSOR experiment scheme. IR‐NSCD can automatically combine and give NMR spectra and IRCD spectra of the nuclear spin prepolarized samples in liquids, which, in principle, could be developed to become a unique, novel analytical tool.

Bioactive Alkaloids as Secondary Metabolites from Plant Endophytic Aspergillus Genus

“…Compounds 129, 130, and 132 showed moderate activity against PC3, with IC 50 values of 32.2 ± 0.5, 30.1 ± 0.7, and 27.8 ± 0.4 µM, respectively. Compounds 131 and 132 indicated moderate cytotoxic activity against NCI-H460, with IC 50 values of 26.9 ± 0.6 and 33.4 ± 0.7 µM, respectively [33]. The MIC values of 132 and 133 against Enterococcus faecalis were 32 and 32 µg/mL, respectively.…”

“…Schiffn. All isolates displayed weak to moderate cytotoxicity against PC3, PC3D, A549, and NCI-H460 cells [33].…”

“…As well as the metabolites 129 and 130, fumiquinazoline J (131) and fumiquinazoline C (132) were also isolated from endophyte A. fumigatus from liverwort Heteroscyphus tener (Steph.) Schiffn.s [33]. Fumiquinazoline J (131) was also identified from mangrove-derived A. fumigatus HQD24 [53].…”

“…87 [47], and mangrove-derived A. fumigatus HQD24 [53]. The bio-assay showed that this compound exhibited cytotoxicity towards PC3, with an IC 50 value of 26.6 ± 0.7 µM [33], and immunosuppressive activity against T-cell proliferation induced by ConA, with an IC 50 value of 52.13 ± 0.13 µM [53]. It was devoid of antibacterial activity [47].…”

“…EJC08 associated with Bauhinia guianensis [66], A. fumigatus associated with Erythrophloeum fordii Oliv [29], A. fumigatus associated with Heteroscyphus tener (Steph.) Schiffn [33], A. fumigatus D associated with Edgeworthia chrysantha Lindl [30], and Aspergillus sp. 87 [47].…”