Search Results - "Portalone, Gustavo"

5-Fluorocytosine/Isocytosine Monohydrate. The First Example of Isomorphic and Isostructural Co-Crystal of Pyrimidine Nucleobases by Portalone, Gustavo

“…To date, despite the crucial role played by cytosine, uracil, and thymine in the DNA/RNA replication process, no examples showing isomorphic and isostructural…”
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Site Selectivity of Halogen Oxygen Bonding in 5- and 6-Haloderivatives of Uracil by Portalone, Gustavo

“…Seven 5-and 6-halogenated derivatives of uracil or 1-methyluracil (halogen = Cl, Br, I) were studied by single crystal X-ray diffraction. In contrast with pure…”
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Solid-phase molecular recognition of cytosine based on proton-transfer reaction. Part II. supramolecular architecture in the cocrystals of cytosine and its 5-Fluoroderivative with 5-Nitrouracil by Portalone, Gustavo

“…Background Cytosine is a biologically important compound owing to its natural occurrence as a component of nucleic acids. Cytosine plays a crucial role in…”
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A Combined Experimental and Computational Study of Halogen and Hydrogen Bonding in Molecular Salts of 5-Bromocytosine by Aschi, Massimiliano, Toto Brocchi, Giorgia, Portalone, Gustavo

“…Although natural or artificial modified pyrimidine nucleobases represent important molecules with valuable properties as constituents of DNA and RNA, no…”
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Benzamidinium 2-methoxybenzoate by Portalone, Gustavo

“…The title molecular salt, C7H9N2+.C8H7O3−, was synthesized by reaction between benzamidine (benzenecarboximidamide) and 2-methoxybenzoic acid. In the cation,…”
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A new polymorph of 2,6-dimethoxybenzoic acid by Portalone, Gustavo

“…A new crystalline form of 2,6-dimethoxybenzoic acid, C9H10O4, crystallizing in a tetragonal unit cell has been identified during screening for co-crystals. The…”
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4-Methoxybenzamidinium 2,6-dimethoxybenzoate by Portalone, Gustavo

“…The title compound, C8H11N2O+·C9H9O4−, was synthesized by the reaction of 4-methoxybenzamidine (4-amidinoanisole) and 2,6-dimethoxybenzoic acid. The…”
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Cytosinium orotate dihydrate by Portalone, Gustavo

“…The title compound, C4H6N3O(+)·C5H3N2O4(-)·2H2O or Cyt(+)·Or(-)·2H2O, was synthesized by a reaction between cytosine (4-amino-2-hy-droxy-pyrimidine, Cyt) and…”
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Redetermination of orotic acid monohydrate by Portalone, Gustavo

“…The crystal structure of the title compound, which is also known as vitamin B(13) (systematic name: 2,6-dioxo-1,2,3,6-tetra-hydro-pyrimidine-4-carboxylic acid…”
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A redetermination of 2-nitrobenzoic acid by Portalone, Gustavo

“…The crystal structure of the title compound, C7H5NO4, was first reported by Kurahashi, Fukuyo & Shimada [(1967). Bull. Chem. Soc. Jpn, 40, 1296]. It has…”
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Redetermination of 2,6-dimethoxybenzoic acid by Portalone, Gustavo

“…The crystal structure of the title compound, C9H10O4, was first reported by Swaminathan, Vimala & Lotter [Acta Cryst. (1976), B32, 1897-1900]. It has been…”
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Short X···N Halogen Bonds With Hexamethylenetetraamine as the Acceptor by Anyfanti, Goulielmina, Bauzá, Antonio, Gentiluomo, Lorenzo, Rodrigues, João, Portalone, Gustavo, Frontera, Antonio, Rissanen, Kari, Puttreddy, Rakesh

“…Hexamethylenetetramine (HMTA) and -haloimides form two types of short (imide)X···N and X-X···N (X = Br, I) halogen bonds. Nucleophilic substitution or…”
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Redetermination of 5-iodouracil by Portalone, Gustavo

“…The title compound (systematic name: 2,4-dihydroxy-5-iodopyrimidine), C4H3IN2O2, which was first reported by Sternglanz, Freeman & Bugg [Acta Cryst. (1975),…”
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Acetoguanamine N , N -dimethylformamide solvate by Portalone, Gustavo

“…The structure of acetoguanamine (or 2,4-diamino-6-methyl-1,3,5-triazine) has been determined as the N , N -dimethylformamide solvate, C 4 H 7 N 5 ·C 3 H 7 NO…”
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Benzamidinium tetrahydropentaborate sesquihydrate by Portalone, Gustavo

“…The asymmetric unit of the title compound [systematic name: benzamidinium 3,3′,5,5′-tetrahydroxy-1,1′-spirobi[2,4,6-trioxa-1,3,5-triboracyclohexane](1−)…”
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4-Methoxybenzamidinium acetate by Irrera, Simona, Portalone, Gustavo

“…The title compound, C8H11N2O+·CH3CO2−, was synthesized by a reaction between 4-methoxybenzamidine (4-amidinoanisole) and acetic acid. In the cation,…”
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Biguanidinium dichloride by Portalone, Gustavo

“…The asymmetric unit of the title compound, C(2)H(9)N(5) (2+)·2Cl(-), is composed of one diprotonated biguanidinium cation and two chloride anions. The…”
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4-Methoxybenzamidinium hydrogen oxalate monohydrate by Irrera, Simona, Portalone, Gustavo

“…The title hydrated salt, C8H11N2O+·C2HO4−·H2O, was synthesized by a reaction of 4-methoxybenzamidine (4-amidinoanisole) and oxalic acid in…”
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4-Methoxybenzamidinium bromide by Irrera, Simona, Portalone, Gustavo

“…The title salt, C8H11N2O+·Br−, was synthesized by the reaction between 4-methoxybenzamidine (4-amidinoanisole) and hydrobromic acid. In the cation, the…”
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4-Methoxybenzamidinium nitrate by Irrera, Simona, Portalone, Gustavo

“…The title salt, C8H11N2O+·NO3−, was synthesized by a reaction between 4-methoxybenzamidine (4-amidinoanisole) and nitric acid. The asymmetric unit…”
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