title: 1H and 13C chemical shifts for some 6,6a-dihydrochromeno(3,4-b)chromene derivatives.
abstract: The 1H and 13C NMR resonances of five 6,6a-dihydrochromeno(3,4-b)chromene derivatives were assigned completely with certainty using a concerted application of one- and two-dimensional experiments (DEPT, gs-COSY, gs-HMQC and gs-HMBC).
authors.affiliation: Laboratoire de Synthèse Organique Sélective UMR-CNRS 6114, Université de la Méditerranée, 163 Avenue de Luminy, Case 901, 13288 Marseille Cedex 9, France.
authors.forename: A-J Abogo
authors.initials: AJ
authors.lastname: Mebale
authors.forename: A
authors.initials: A
authors.lastname: Maggiani
authors.forename: P
authors.initials: P
authors.lastname: Brun