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Acknowledgements
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We thank Minna Susanne Mùller, Bent Hùegh, Carsten
Christensen, Alice Ravn, Alice Jùrgensen, and Mar-
ianne Barfoed for excellent technical assistance.
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Reaction of 3 with DMAD and DDQ was inspired by
Noguchi et al. with modi®cations as follows: DMAD (1.15
equiv) was added at 0 ꢀC and only a slight excess of DDQ
(1.04 equiv) was used. Further reaction details can be obtained
from Jùrgensen et al.
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was used to establish the alignment shown in the ®gure.
22. The WebLab ViewerLite 3.5 visualization program
(Molecular Simulations Inc.) was used to display the 3D
alignment.
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