2020
DOI: 10.1038/s41598-020-65148-0
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New chlamydosporol derivatives from the endophytic fungus Pleosporales sp. Sigrf05 and their cytotoxic and antimicrobial activities

Abstract: Five new chlamydosporol derivatives, named pleospyrones A-E (1–5), together with one known congener (6), were isolated from the culture of the endophytic fungus Pleosporales sp. Sigrf05, obtained from the medicinal plant Siraitia grosvenorii. The structures of the new compounds were elucidated mainly by analysis of the HRESIMS, and (1D, 2D) NMR data, while ECD and optical rotation calculations were used to assign the absolute configurations. The plausible biosynthetic pathway of these compounds were proposed. … Show more

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Cited by 16 publications
(10 citation statements)
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“…Sigrf05, residing inside the tuberous roots of Siraitia grosvenorii. Compound 109 exhibited weak inhibition against Agrobacterium tumefaciens, B. subtilis, R. solanacearum, and X. vesicatoria with the same MIC value of 100.0 µM [65]. Compound 111 also exhibited moderate inhibition against S. aureus ATCC 29213 and ATCC 700699 with MICs of 25 and 50 µM, respectively [66].…”
Section: Minor Taxa Of the Ascomycetesmentioning
confidence: 99%
“…Sigrf05, residing inside the tuberous roots of Siraitia grosvenorii. Compound 109 exhibited weak inhibition against Agrobacterium tumefaciens, B. subtilis, R. solanacearum, and X. vesicatoria with the same MIC value of 100.0 µM [65]. Compound 111 also exhibited moderate inhibition against S. aureus ATCC 29213 and ATCC 700699 with MICs of 25 and 50 µM, respectively [66].…”
Section: Minor Taxa Of the Ascomycetesmentioning
confidence: 99%
“…(2017) PC-3 1.09 ​μM HCT-116 2.31 ​μM Phomone E (12) HL-60 1.04 ​μM PC-3 5.90 ​μM HCT-116 9.84 ​μM Pleospyrone A (13) HepG2 5.07 ​μM Pleosporales sp. Sigrf05 Siraitia grosvenorii (T) China Lai et al. (2020) BGC-823 1.26 ​μM NCI–H1650 15.1 ​μM Daoy 2.72 ​μM Pleospyrone D (14) NCI–H1650 29.6 ​μM Pleospyrone E (15) HCT-116 1.17 ​μM HepG2 20.3 ​μM BGC-823 20.7 ​μM NCI–H1650 6.26 ​μM Daoy 19.9 ​μM Rhizopycnin C (16) A-549 25.5 ​μM Rhizopycnis vagum Nitaf22 Nicotiana tabacum (T) China Lai et al.…”
Section: Cytotoxic Secondary Metabolites From Endophytic Fungimentioning
confidence: 99%
“…Pleospyrone A and Pleospyrone E were cytotoxic against HepG2, BGC-823 (gastric cancer), NCI–H1650 (non-small-cell lung carcinoma) and DAOY (medulloblastoma) cell lines in the range of 1.26–20.7 ​μM of IC 50 values, while Pleospyrone D was active against only NCI–H1650 with IC 50 of 29.6 ​μM. Pleospyrone E also possess cytotoxicity against HCT-116 cancer cell line with 1.17 ​μM of IC 50 value, while other compounds remain inactive ( Lai et al., 2020 ). An unprecedented dibenzo-α-pyrone, Rhizopycnin C (16) was separated from culture of endophytic fungus Rhizopycnis vagum Nitaf22 harbored in Nicotiana tabacum .…”
Section: Cytotoxic Secondary Metabolites From Endophytic Fungimentioning
confidence: 99%
“…The B3LYP/6-31 G(d)-optimized conformer of (5R)-11 was used to calculate the optical rotation. The calculation was carried out using the time-dependent DFT method at the B3LYP/6-31+G(d,p) level (PCM = MeOH), as described previously (Lai et al, 2020).…”
Section: Optical Rotation Calculationmentioning
confidence: 99%