Article History

Received: 8 August 2014

Accepted: 25 November 2014

First Online: 12 January 2015

Change Date: 19 February 2015

Change Type: Erratum

Change Date: 25 January 2016

Change Type: Corrigendum

Change Details: In the version of this Article originally published Robert S. Paton (robert.paton@chem.ox.ac.uk) should have been acknowledged as a corresponding author.

Change Details: In the version of this Article originally published, the absolute stereochemistry of compounds in Fig.2 and Table 3 was reversed. Additionally, the absolute stereochemistry was reversed in the Markush product structure shown in the reaction scheme at the top of Table 2. These structures have been corrected in the online versions of the Article.

Competing interests

: The authors declare no competing financial interests.