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. Author manuscript; available in PMC: 2013 Aug 8.
Published in final edited form as: Tetrahedron Lett. 2008 Jul 8;49(39):5587–5589. doi: 10.1016/j.tetlet.2008.07.029

Table 1.

Observed coupling constants for endo-(bornyl) and exo-(isobornyl) epimers 6 and 7

graphic file with name nihms492978u1.jpg endo-Epimer (bornyl) 6 J (Hz) graphic file with name nihms492978u2.jpg exo-Epimer (isobornyl) 7 J (Hz)
J2exo,3exo 11.5 J2endo,3exo 8.0
J2exo,3endo 5.4 J2endo,3endo 9.2
4J2exo,6exo 2.5 4J2endo,6exo 0.0
J3exo,3endo 13.2 J3exo,3endo 12.5
J3exo,4 4.5 J3exo,4 4.4
4J3exo,5exo 3.5 4J3exo,5exo 2.6
J4,5exo 4.5 J4,5exo 4.4
J5exo,5endo 12.5 J5exo,5endo 12a
J5exo,6exo 12.0 J5exo,6exo 12a
J5exo,6endo 4.1 J5exo,6endo 2.7
J5endo,6exo 4.6 J5endo,6exo 4.4
J5endo,6endo 9.4 J5endo,6endo 9.4
J6exo,6endo 13.1 J6exo,6endo 12a
a

Coupling constants determined within 0.5 Hz.