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1',5-Dinitro-2'-phenyl-2',3',5',6',7',7a'-hexa-hydro-spiro-[indoline-3,3'-1'H-pyrrolizin]-2-one.

ABSTRACT: In the title cyclo-adduct, C(20)H(18)N(4)O(5), the rings of the pyrrolizine system adopt envelope conformations. A centrosymmetric dimer is formed via inter-molecular N-H?O hydrogen bonds between the indolinone rings.

SUBMITTER: Sarrafi Y

PROVIDER: S-EPMC2960711 | biostudies-literature | 2008 Aug

REPOSITORIES: biostudies-literature

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1',5-Dinitro-2'-phenyl-2',3',5',6',7',7a'-hexa-hydro-spiro-[indoline-3,3'-1'H-pyrrolizin]-2-one.

Sarrafi Yaghoub Y Alimohammadi Kamal K

Acta crystallographica. Section E, Structure reports online 20080813 Pt 9

In the title cyclo-adduct, C(20)H(18)N(4)O(5), the rings of the pyrrolizine system adopt envelope conformations. A centrosymmetric dimer is formed via inter-molecular N-H⋯O hydrogen bonds between the indolinone rings. ...[more]

PMID: 21201723

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2'-Methyl-2'-nitro-1'-phenyl-2',3',5',6',7',7a'-hexa-hydro-spiro-[indoline-3,3'-1'H-pyrrolizin]-2-one.

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Crystal structure of 2'-[(2',4'-di-fluoro-biphenyl-4-yl)carbon-yl]-1'-phenyl-1',2',5',6',7',7a'-hexa-hydro-spiro-[indole-3,3'-pyrrolizin]-2(1H)-one.

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{1'-Phenyl-1',2',5',6',7',7a'-hexa-hydro-spiro-[indeno-[1,2-b]quinoxaline-11,3'-pyrrolizin]-2'-yl}(p-tol-yl)methanone.

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Project description:In the title compound, C(7)H(11)NO(4), prepared via a Morita-Baylis-Hillman adduct, the five-membered ring bearing three O atoms approximates to a twisted conformation, whereas the other ring is close to an envelope, with a C atom in the flap position. The dihedral angle between their mean planes (all atoms) is 23.11?(9)°. The new stereocenters are created in a trans-diaxial configuration. In the crystal, O-H?O and O-H?(O,O) hydrogen bonds link the mol-ecules, generating a three-dimensional network. A weak C-H?O inter-action also occurs.

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1'-Methyl-2-oxo-5'-phenyl-spiro-[indoline-3,3'-pyrrolidine]-4',4'-dicarbo-nitrile.

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4'-Methyl-3-(4-nitro-phen-yl)-4-phenyl-4,5,1',2',3',4'-hexa-hydro-spiro-[isoxazole-5,2'-naphthalen]-1'-one.

Project description:The title compound, C(25)H(20)N(2)O(4), is a new spiro-isoxazoline derivative. It contains a five-membered isoxazoline ring (A), a tetra-lone unit (E and D), a 4-nitro-phenyl substituent (B), and a phenyl ring (C). The isoxazoline ring (A) has an envelope conformation, while the cyclo-hexenone ring (D) has an inter-mediate sofa/half-chair conformation. The aromatic ring of the 4-nitro-phenyl substituent (B) is inclined at an angle of 78.97 (10)° to the phenyl ring (C). The rigid pharmacophore site, Osp(2)-C-C-Osp(3), is characterized by an O⋯O distance of 3.113 (2) Å and an O-C-C-O torsion angle of 97.8 (2)°. In the crystal structure, mol-ecules are linked by C-H⋯O contacts.

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(1S,2E,6R,7aR)-2-Benzyl-idene-1,6-dihy-droxy-2,3,5,6,7,7a-hexa-hydro-1H-pyrrolizin-3-one.

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