β Scribed by B.P. Roques; S. Combrisson; R. Oberlin; J. Barbet
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Conformations of (l-2)-, (l&+3)-, and (l-4)linked disaccharide methyl glycosides involving aldohexopyranose residues have been studied on the basis of the inter-unit n.0.e. and theoretical calculations using atom-atom potential functions. The preferred conformations and the n.0.e. values are de
The configurations of some isoxazolidinium salts have been determined by nuclear Overhauser effect difference spectroscopy (NOEDS). The stereochemical findings give a good explanation of the different reactivities experienced in the five-membered ring-opening process as a function of the steric requ
In addition to the previously reported bakkenolide-A, structure 11, and bakkenolide -B, 1,2,3 two new sesquiterpenoids, bakkenolides-C and -D, have been isolated from the bud of Petasites japonicus subsp. giganteus Kitam. The structures of the last three compounds are discussed in this communication