(1R*,3′S*,4′R*)-4′-(4-Chlorophenyl)-3′-[(4-hydroxy-2-oxo-1,2-dihydroquinolin-3-yl)carbonyl]-1′-methylspiro[acenaphthylene-1,2′-pyrrolidin]-2-one

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(1R*,3′S*,4′R*)-4′-(4-Chloro­phen­yl)-3′-[(4-hy­droxy-2-oxo-1,2-dihydro­quinolin-3-yl)carbon­yl]-1′-methyl­spiro­[ace­naphthyl­ene-1,2′-pyrrolidin]-2-one

The title compound, C(32)H(23)ClN(2)O(4), has a quinoline, a chloro-phenyl and an acenaphthalene ring system attached to a central pyrrolidine ring, which has three stereogenic centers. Nevertheless, the compound crystallizes as a racemate with two mol-ecules of identical chirality in the asymmetric unit. They differ in the conformation of the five-membered pyrrolidine ring; in one molecule it ...

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3′-(4-Chloro­benzo­yl)-4′-(4-chloro­phen­yl)-1′-methyl­spiro­[indoline-3,2′-pyrrolidin]-2-one

In the title compound, C(25)H(20)Cl(2)N(2)O(2), the pyrrolidine ring adopts an envelope conformation and the best plane through the five ring atoms makes a dihedral angle of 87.03 (8)° with the indoline ring. Mol-ecules are connected by pairs of N-H⋯O hydrogen bonds into centrosymmetric dimers with an R(2) (2)(8) graph-set ring motif. C-H⋯O hydrogen bonds stabilize the crystal structure.

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Methyl 3-(2-chlorophenyl)-2-(1H-indol-3-ylmethyl)-5-[1-(4-methoxyphenyl)-4-oxo-3-phenylazetidin-2-yl]-4-nitropyr­rolidine-2-carboxylate

In the mol-ecule of the title compound, C(37)H(33)ClN(4)O(6), the four-membered β-lactam ring is essentially planar and is oriented at dihedral angles of 30.0 (1), 76.3 (1) and 30.9 (1)° with respect to the methoxy-phenyl ring, the phenyl ring and the indole unit, respectively. The pyrrolidine ring adopts a twist conformation. Intra-molecular C-H⋯Cl and C-H⋯O hydrogen bonds result in the format...

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(E)-3-(4-Hydr­oxy-3-methoxy­benzyl­idene)-4-(4-hydroxy­phen­yl)pyrrolidin-2-one

The title compound, C(18)H(17)NO(4), was isolated from an ethanol extract of Ophiopogon japonicus. The dihedral angle between the 4-hydroxy-3-methoxyphenyl ring and the pyrrolidine ring is 17.4 (1)°. The 4-hydroxyphenyl ring makes a dihedral angle of 69.74 (6)° with the least-squares plane through the 4-hydroxy-3-methoxyphenyl ring and the pyrrolidine ring. The conformation of the pyrrolidine f...

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4-Bromo-3-hy­droxy-3-(4-hy­droxy-2-oxo-2H-chromen-3-yl)indolin-2-one

In the mol-ecule of the title compound, C(17)H(10)BrNO(5), the indoline system and the attached coumarin ring are each essentially planar with maximum deviations of 0.074 (2) and 0.062 (2) Å, respectively. The dihedral angle between them is 85.09 (3)°. In the crystal, all heteroatoms (except for the coumarin oxo O atoms) are involved in intra- and inter-molecular hydrogen bonds. An intra-molecu...

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ژورنال

عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online

سال: 2011

ISSN: 1600-5368

DOI: 10.1107/s1600536811048896