Correction to: Scientific Reports https://doi.org/10.1038/s41598-017-17015-8, published online 05 December 2017

The original version of this Article contained an error in the order of the Figures. Figures 1, 2, 3, 4, 5, 6, and 7 were published as Figures 2, 3, 4, 6, 7, 1, and 5 respectively. The Figure Legends were correct from the time of publication.

Furthermore, the orientation of the arrow linking compound 3 and (±)-tylophorine in Fig. 5, originally published as Fig. 7, was incorrect.

Figure 5
figure 1

Syntheses of (±)-tylophorine and 13a-hydroxytylophorine (1).

These errors have now been corrected in HTML and PDF versions of this Article.