References of "Acta Crystallographica. Section B-Structural Crystallography and Crystal Chemistry"
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See detailAcide cyclohexyl-4 naphtalène-1-propionique
Dupont, Léon; Dideberg, Otto; Dive, Georges ULg et al

in Acta Crystallographica. Section B-Structural Crystallography and Crystal Chemistry (1982), 38(9), 2409-2411

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See detailStructure de l'hydrogénonitrate de l'isopropyl-1 {[(pipéridyl-1 amino)-4 pyridyl-3]sulfonyl}-3 urée
Dupont, Léon; Dideberg, Otto; Delarge, Jacques et al

in Acta Crystallographica. Section B-Structural Crystallography and Crystal Chemistry (1982), 38(5), 1495-1500

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See detailTetrakis(propylthio)-2,2,6,6' azoxy-3,3' pyridine
Lamotte, Josette; Dupont, Léon; Dideberg, Otto et al

in Acta Crystallographica. Section B-Structural Crystallography and Crystal Chemistry (1980), 36

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See detailStructure d'un nouvel alcaloïde bisindolinique: complexe moléculaire 1:1 Sungucine-Acétone
Dupont, Léon; Dideberg, Otto; Lamotte, Josette ULg et al

in Acta Crystallographica. Section B-Structural Crystallography and Crystal Chemistry (1980), B 36

Sungucine ( found only in Strychnos icaja ) represents a new type of bisindolinic alkaloid with an unusual C(23)-C(5') bond between the two parts of the molecule, which have the same stereochemistry. Ring ... [more ▼]

Sungucine ( found only in Strychnos icaja ) represents a new type of bisindolinic alkaloid with an unusual C(23)-C(5') bond between the two parts of the molecule, which have the same stereochemistry. Ring D (and D') is almost in a boat conformation and C(2)-C(16) is cis. There are only van der Waals interactions in the orthorombic crystals of the molecular complex 1:1 sungucine-acetone. [less ▲]

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See detailStructure cristalline et moléculaire d'un nouvel alclaoïde bisindolique: complexe moléculaire 1:2 Strychnofoline-Ethanol
Dideberg, otto; Lamotte-Brasseur, Josette ULg; Dupont, Léon et al

in Acta Crystallographica. Section B-Structural Crystallography and Crystal Chemistry (1977), B33

Strychnofoline is a phenolic alkaloid isolated from leaves of Strychnos usambarensis. The crystals of the complex Strychnofoline-Ethanol are monoclinic. the crystal structure has been solvad by direct ... [more ▼]

Strychnofoline is a phenolic alkaloid isolated from leaves of Strychnos usambarensis. The crystals of the complex Strychnofoline-Ethanol are monoclinic. the crystal structure has been solvad by direct methods. The configuration determined by biogenetic arguments is 3S?4R?7S?15S?17S?20R. This is the first oxindole alkaloid found in a Strychnos species. [less ▲]

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See detailStructure Cristalline et Moléculaire de la Picrotoxine, C15H16O6.C15H18O7
Dupont, Léon; Dideberg, Otto; Lamotte, Josette ULg et al

in Acta Crystallographica. Section B-Structural Crystallography and Crystal Chemistry (1976), B32(11), 2987-2993

Picrotoxin is the toxic constituent of Anamirta cocculus fruits. Crystals of picrotoxin are monoclinic and are an addition component of two almost identical molecules :picrotoxinin, C15H16O6, and picrotin ... [more ▼]

Picrotoxin is the toxic constituent of Anamirta cocculus fruits. Crystals of picrotoxin are monoclinic and are an addition component of two almost identical molecules :picrotoxinin, C15H16O6, and picrotin, C15H18O7.The structure of each molecule is compared with the crystal structure of alpha1-bromopicrotoxinin. [less ▲]

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See detailDétermination de la Structure Cristalline et de la Configuration Absolue du Bromhydrate d'Usambarensine
Dideberg, Otto; Dupont, Léon; Angenot, Luc ULg

in Acta Crystallographica. Section B-Structural Crystallography and Crystal Chemistry (1975), B31(6), 1571-1575

Usambarensine is a bisindolinic alkaloid found in the bark of Strychnos usambarensis roots. The crystal and molecular structure of usambarensine.2HBr.2H2O has been solved by direct methods thanks to a ... [more ▼]

Usambarensine is a bisindolinic alkaloid found in the bark of Strychnos usambarensis roots. The crystal and molecular structure of usambarensine.2HBr.2H2O has been solved by direct methods thanks to a Hilger-Watts four-circle diffractometer. The crystals are monoclinic; refinement of the parameters was carried out with 2459 reflexions. The absolute configuration of the molecule, determined by X-ray anomalous scattering, confirms the 3 alpha cis configuration ( 11alpha cis, IUPAC) assigned earlier by spectral, chromatographic and biogenetic data.This configuration seems dependent on the presence of an ethylidenic chain in the corynane part of the molecule. [less ▲]

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See detailStructure cristalline et moléculaire d'un nouvel alcaloïde indolique, l'Akagérine: C20H24N2O2
Dupont, Léon; Dideberg, Otto; Angenot, Luc ULg

in Acta Crystallographica. Section B-Structural Crystallography and Crystal Chemistry (1975), B31(10), 2378-2383

Akagerine is a new alkaloid first isolated by one of us (LA) from roots of Strychnos usambarensis. The crystal structure was determined by direct methods from three-dimensional diffractometer data. The ... [more ▼]

Akagerine is a new alkaloid first isolated by one of us (LA) from roots of Strychnos usambarensis. The crystal structure was determined by direct methods from three-dimensional diffractometer data. The crystals are tetragonal. The absolute configuration was not determined. This is the first report of a seven-membered ring with an N1-C17 bond (conventional notation for indole alkaloid). The lone-pair of electrons on N4 is cis with respect to C(3)H and C(15)H.The cohesion of the structure is the result of one hydrogen bond OH...N (2.77O Angstroem) and van der Waals interactions. [less ▲]

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