. Author manuscript; available in PMC: 2014 Nov 20.
Published in final edited form as: Chemistry. 2014 Mar 3;20(14):3917–3921. doi: 10.1002/chem.201400407
© 2014 The Authors.
This is an open access article under the terms of the Creative Commons Attribution Non-Commercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
Figure 2.
X-ray crystal structure of (R)-17 b.