6,7,9,10-Tetrahydro-16,22-ethanooxyethano-5,8,11,19-tetraoxa-16,22-diazadibenzo[h,q]cyclooctadecine-17,21-dione: a benzylannelated macrobicyclic diamide
نویسندگان
چکیده
The macrobicyclic title compound, C(24)H(28)N(2)O(7), has two tertiary diamide bridgehead atoms and is composed of a 12-membered ring (N(2)O(2) donor set) and two 18-membered rings (N(2)O(4) donor sets). The solid-state structure shows that each of the amide groups is not coplanar with the adjacent benzene ring and NMR studies indicate that this conformational relationship persists in solution.
منابع مشابه
21-(4-Methylphenylsulfonyl)-4,7,13,16-tetraoxa-1,10,21-triazabicyclo[8.8.5]tricosane-19,23-dione: an N-tosylated macrobicyclic dilactam
The macrobicyclic title compound, C(23)H(35)N(3)O(8)S, contains two tertiary amide bridgehead N atoms and a toluene-sulfonamide N atom in the center of the five-atom bridging strand. The mol-ecule has a central cavity that is defined by the 18-membered ring identified by the N(2)O(4) donor atom set and two 15-membered rings with N(3)O(2) donor atom sets. The toluene-sulfonamide N atom adopts an...
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In the title compound, C(23)H(26)O(3), the three six-membered rings of the xanthene system are non-planar, having total puckering amplitudes, Q(T), of 0.443 (2), 0.202 (2) and 0.449 (2) Å. The central ring adopts a boat conformation and the outer rings adopt sofa conformations. The crystal structure is stabilized by van der Waals inter-actions.
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The mol-ecule of the title compound, C(24)H(24)O(5), has crystallographic twofold symmetry, with the central O atom lying on the rotation axis. The dihedral angle between the best planes of the benzene rings fused to the oxepine fragment is 38.5 (1)°. The dioxine ring adopts a twist form with the ethyl-ene group C atoms deviating by 0.472 (5) and -0.248 (6) Å from the plane defined by the remai...
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In the title compound, C(5)H(8)Cl(2)O(6)P(2), the two six-membered rings display chair conformations. The P=O bond distances are 1.444 (2) and 1.446 (2) Å. Weak inter-molecular C-H⋯O hydrogen bonds are present in the crystal structure.
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عنوان ژورنال:
دوره 64 شماره
صفحات -
تاریخ انتشار 2008