Correction to: The Journal of Antibiotics (2014) 67, 577–580; doi:10.1038/ja.2014.19; published online 12 March 2014

After advance online publication of this paper, it has come to the attention of the authors that the planar structure of MBJ-0034 (1) had been previously published. With the approval of the Managing Editor, the authors have revised the article by inserting a sentence to the end of the main body text, citing the original reference in which this planar structure was first reported.

The online html and pdf versions have also been rectified.