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1,5-Bis[(2-meth-oxy-eth-oxy)meth-yl]-1,5-naphthyridine-4,8(1H,5H)-dione.

ABSTRACT: The complete mol-ecule of the title compound, C(16)H(22)N(2)O(6), is generated by crystallographic inversion symmetry. The conformation of the N-C-O-C fragment of the side chain is approximately gauche [torsion angle = -74.84 (17)°]. In the crystal, weak C-H⋯O inter-actions link the mol-ecules.

SUBMITTER: Wang K

PROVIDER: S-EPMC3274977 | biostudies-literature |

REPOSITORIES: biostudies-literature

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3-{[3-(4-Meth-oxy-phen-yl)-4,5-dihydro-1,2-oxazol-5-yl]meth-yl}-1,5-dimethyl-1H-1,5-benzodiazepine-2,4(3H,5H)-dione.

Project description:The mol-ecule of the title compound, C(22)H(23)N(3)O(4), features a benzodiazepine fused-ring system whose seven-membered ring adopts a boat-shaped conformation (with the C atoms of the fused-ring as the stern and the methine C atom as the prow). The methyl-ene C atom connected to the methine C atom occupies an equatorial position. The methyl-ene C atom is connected to the five-membered oxazole ring, both of which are disordered over two positions in a 0.634 (4):0.366 (4) ratio. Weak inter-molecular C-H⋯O hydrogen bonding is present in the crystal structure.

| S-EPMC3151967 | biostudies-literature

7-Chloro-1,5-dipropargyl-1H-1,5-benzodiazepine-2,4(3H,5H)-dione.

Project description:The seven-membered ring of the title compound, C(15)H(11)ClN(2)O(2), adopts a boat-shaped conformation (with the C atoms of the fused-ring as the stern and the methyl-ene C atom as the prow). The N atoms exists in a trigonal-planar coordination; one of the acetyl-enic H atoms forms a C-H?O hydrogen bond to the O atom of an adjacent mol-ecule, generating a linear chain along a body diagonal.

| S-EPMC3011384 | biostudies-literature

1,5-Dimethyl-3-propargyl-1H-1,5-benzodiazepine-2,4(3H,5H)-dione.

Project description:The asymmetric unit of the title compound, C(14)H(14)N(2)O(2), comprises two independent mol-ecules, which slightly differ in the orientation of the propargyl chain. In both molecules, the diazepine ring adopts a boat conformation with the propargyl-bearing C atom as the prow and the C atoms at the ring junction as the stern. The carbonyl O atom of one independent mol-ecule is hydrogen bonded to the acetyl-enic H atom of the other independent mol-ecule. In the crystal, symmetry-related mol-ecules are linked together by C-H⋯O hydrogen bonds, forming a ribbon-like structure along the c axis.

| S-EPMC3006968 | biostudies-literature

1-Ethyl-1H,6H-pyrrolo[2,3-c]azepine-4,8(5H,7H)-dione.

Project description:The title compound, C(10)H(12)N(2)O(2), was synthesized by cyclization of 3-(1-ethyl-pyrrole-2-carboxamido)propanoic acid in the presence of polyphospho-ric acid and diphospho-rus pentoxide. In the crystal structure, adjacent mol-ecules are linked by N-H?O hydrogen bonds, forming chains extending along the b axis.

| S-EPMC2977308 | biostudies-literature

3-Hexadecyl-1,5-dimethyl-1H-1,5-benzo-diazepine-2,4(3H,5H)-dione.

Project description:In the title mol-ecule, C(27)H(44)N(2)O(2), the seven-membered ring adopts a boat-shaped conformation, with two C atoms of the fused benzene ring forming the stern and the methine C atom forming the prow. The hexa-decyl substituent occupies an equatorial position, with the aliphatic chain exhibibiting an extended zigzag conformation.

| S-EPMC3089251 | biostudies-literature

1,3,3,5-Tetra-methyl-1H-1,5-benzodiazepine-2,4(3H,5H)-dione.

Project description:The seven-membered ring in the title compound, C(13)H(16)N(2)O(2), adopts a boat-shaped conformation (with the C atoms of the fused-ring as the stern and the C atom bearing two methyl groups) as the prow.

| S-EPMC3100004 | biostudies-literature

3-(12-Bromo-dodec-yl)-1,5-dimethyl-1H-1,5-benzodiazepine-2,4(3H,5H)-dione.

Project description:The seven-membered ring in the title compound, C(23)H(35)BrN(2)O(2), adopts a boat-shaped conformation (with the C atoms of the fused-ring as the stern and the methine C atom as the prow). The bromo-dodecyl substituent occupies an equatorial position, with the dodecyl chain exhibiting an extended conformation. Weak inter-molecular C-H?O hydrogen bonding is present in the crystal structure.

| S-EPMC3009360 | biostudies-literature

3,4-Bis(4-meth-oxy-phen-yl)-2,5-dihydro-1H-pyrrole-2,5-dione.

Project description:In the title compound, C(18)H(15)NO(4), the benzene rings form quite different dihedral angles [16.07?(1) and 59.50?(1)°] with the central pyrrole ring, indicating a twisted mol-ecule. Conjugation is indicated between the five- and six-membered rings by the lengths of the C-C bonds which link them [1.462?(3) and 1.477?(3)?Å]. The most prominent feature of the crystal packing is the formation of inversion dimers via eight-membered {?HNCO}(2) synthons.

| S-EPMC3344467 | biostudies-literature

3,4-Bis[4-(4-meth-oxy-phen-oxy)phen-yl]-1-methyl-1H-pyrrole-2,5-dione.

Project description:The title compound, C(31)H(25)NO(6), has a structure related to other 3,4-diaryl-substituted maleic anhydride derivatives which have been shown to be useful as photochromic materials. The dihedral angles between the maleimide ring system and the benzene rings bonded to it are 44.48?(3) and 17.89?(3)°, while the angles between each of the latter rings and the corresponding ether bridging connected meth-oxy-benzene rings are 78.61?(8) and 72.67?(7)°. In the crystal, the molecules are linked by C-H?O inter-actions.

| S-EPMC3200619 | biostudies-literature

3-{[3-(4-Chloro-phen-yl)-4,5-dihydro-1,2-oxazol-5-yl]meth-yl}-1,5-dimethyl-1H-1,5-benzodiazepine-2,4(3H,5H)-dione.

Project description:The seven-membered ring of the title mol-ecule, C(21)H(20)ClN(3)O(3), adopts a boat-shaped conformation (with the C atoms of the fused-ring as the stern and the methine C atom as the prow). The substituent at the 3-position occupies an equatorial position; its five-membered ring is approximately planar (r.m.s. deviation = 0.081?Å), and is aligned at 14.5?(1)° with respect to the chloro-phenyl ring to which it is connected.

| S-EPMC3052140 | biostudies-literature

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