title: 3,3,6,6-Tetra-methyl-9-[6-(3,3,6,6-tetra-methyl-1,8-dioxo-2,3,4,5,6,7,8,9-octa-hydro-1H-xanthen-9-yl)pyridin-2-yl]-2,3,4,5,6,7,8,9-octa-hydro-1H-xanthene-1,8-dione.
abstract: In the title mol-ecule, C(39)H(45)NO(6), the two tetra-methyl-octa-hydroxanthen-1,8-dione substituents are arranged approximately parallel to each other and approximately perpendicular to the plane of the pyridine ring. The six-membered xanthene rings adopt flattened boat conformations with the O and methine C atoms deviating from the plane of the other four atoms.
authors.forename: Antar A
authors.initials: AA
authors.lastname: Abdelhamid
authors.forename: Shaaban Kamel
authors.initials: SK
authors.lastname: Mohamed
authors.forename: Mirze A
authors.initials: MA
authors.lastname: Allahverdiyev
authors.forename: Atash V
authors.initials: AV
authors.lastname: Gurbanov
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng