An investigation of the stereochemistry of a 22,23-dioxygenated milbemycin

  title={An investigation of the stereochemistry of a 22,23-dioxygenated milbemycin},
  author={Simon Edward Blanchflower and Roderick J. J. Dorgan and Jeremy R. Everett and Simon A. Readshaw},
  journal={Tetrahedron Letters},
Abstract We report NMR studies on a known 22,23-dioxygenated milbemycin which show that the 22 and 23 oxygen atoms are trans diequatorial (I) and not trans diaxial (II) as previously reported1. The stereochemistry of milbemycins α5 to α8 is also discussed in the light of this observation. 
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