title: Methyl 6-(4-chloro-phen-yl)-2,4-dimethyl-1,3-dioxo-1,2,3,4,6,6a,7,12b-octa-hydro-chromeno[4',3':4,5]pyrano[2,3-d]pyrimidine-6a-carboxyl-ate.
abstract: In the title compound, C(24)H(21)ClN(2)O(6), the two fused six-membered pyran rings adopt half-chair conformations. The dihedral angle between the pyrimidine ring and the chloro-phenyl ring is 51.55 (3)°. In the crystal, mol-ecules are linked by pairs of weak inter-molecular C-H⋯O hydrogen bonds, forming inversion dimers. A C-H⋯π inter-action is also observed.
authors.forename: J
authors.initials: J
authors.lastname: Kanchanadevi
authors.forename: G
authors.initials: G
authors.lastname: Anbalagan
authors.forename: G
authors.initials: G
authors.lastname: Sivakumar
authors.forename: M
authors.initials: M
authors.lastname: Bakthadoss
authors.forename: V
authors.initials: V
authors.lastname: Manivannan
references.citation: Bioorg Med Chem. 2006 Jun 1;14(11):3749-57
references.pmid: 16458521
references.citation: Acta Crystallogr D Biol Crystallogr. 2009 Feb;65(Pt 2):148-55
references.pmid: 19171970
references.citation: Acta Crystallogr Sect E Struct Rep Online. 2009 May 29;65(Pt 6):o1444
references.pmid: 21583282
references.citation: Acc Chem Res. 2000 Dec;33(12):879-88
references.pmid: 11123887
references.citation: J Med Chem. 1995 Jan 6;38(1):119-29
references.pmid: 7837222
references.citation: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references.pmid: 18156677
references.citation: Bioorg Med Chem. 2006 May 1;14(9):3113-8
references.pmid: 16412646
references.citation: Acta Crystallogr Sect E Struct Rep Online. 2011 Jul 1;67(Pt 7):o1592
references.pmid: 21837000