Correction to: Scientific Reports https://doi.org/10.1038/srep36318, published online 03 November 2016
This Article contains errors.
In Figure 2A, the NMR spectrum of uttroside A is provided instead of uttroside B. The correct Figure 2A appears below as Figure 1.
Consequently, in the Results section,
“The key information pertaining to steroidal furanose ring include H-21 methyl group at δH 0.99 ppm (3H, d, J = 7 Hz), and hemiketal carbon C-22 at δC 112.5 ppm. Owing to complex pattern of signals arising due to sugars in the region between 3 to 4 ppm, the isolated saponin was peracetylated (Fig. 2A).”
should read:
“The key information pertaining to steroidal furanose ring include H-21 methyl group at δH 1.00 ppm (3H, d, J = 7 Hz), and hemiketal carbon C-22 at δC 110.5 ppm. Owing to complex pattern of signals arising due to sugars in the region between 3 to 4 ppm (Fig. 2A), the isolated saponin was peracetylated.”
“MS-MS analysis in negative mode afforded ions at m/z 1081.5 (M-xyl-H), 919.5 (M-hex-H), 757.4 (M-hex-hex-H), and in positive mode afforded ions at m/z 1235.5 (M-H2O + K), 1197.5 (M- H2O), 1073.4 (M- H2O-hexose + K), 741.4 (M- H2O-hex-hex-xyl+H), 579.3 (M- H2O-hex-hex-xyl-hex+H), 417.3 (M- H2O-hex-hex-xyl-hex-hex+H), 163.06 (M-hex-hex-xyl-hex-hex-furostanol + H), which further confirmed that the isolated saponin is uttroside B with a molecular weight of 1215.34 Da (Supplementary Figures S2, S3 and S4).”
should read:
“MS-MS analysis in negative mode afforded ions at m/z 1081.5 (M-xyl-H), 919.5 (M-xyl-hex-H), 757.4 (M-xyl-hex-hex-H), and in positive mode afforded ions at m/z 1235.5 (M- H2O + K), 1197.5 (M- H2O +H), 1073.4 (M- H2O-hex + K), 741.4 (M- H2O-hex-hex-xyl+H), 579.3 (M- H2O-hex-hex-xyl-hex+H), 417.3 (M- H2O-hex-hex-xyl-hex-hex+H), 163.06 (M-hex-hex-xyl-hex-furostanol), which further confirmed that the isolated saponin is uttroside B with a molecular weight of 1215.34 Da (Supplementary Figures S2, S3 and S4).”
Finally, in Figure 3D, the 100 nM image is a duplication of the 300 nM image. The correct Figure 3D appears below as Figure 2.
The correct version of Figure 2A.
The correct version of Figure 3D.
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Nath, L.R., Gorantla, J.N., Thulasidasan, A.K.T. et al. Author Correction: Evaluation of uttroside B, a saponin from Solanum nigrum Linn, as a promising chemotherapeutic agent against hepatocellular carcinoma. Sci Rep 10, 20431 (2020). https://doi.org/10.1038/s41598-020-77440-0
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DOI: https://doi.org/10.1038/s41598-020-77440-0
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