Search Results - "Valiullina, Z. R."

Synthesis of (±)-Entecavir by Valiullina, Z. R., Ivanova, N. A., Miftakhov, M. S.

“…A practical synthesis of (±)-entecavir has been developed on the basis of Corey (±)-lactone diol. The key stage is the synthesis of (1 R *,3 R *,4 S…”
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Reaction of Derivatives of the [2+2]-Cycloadduct of Dichloroketene and Dimethylfulvene with Ozone by Valiullina, Z. R., Ivanova, N. A., Miftakhov, M. S.

“…Previously unknown optically active cyclopentenones were synthesized by the ozonation of 2-dichloromethyl-5-(1-methylethylidene)- N -[(1 R…”
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Adducts of dichloroketene with 1,3-cyclopentadienes in the synthesis of bioactive cyclopentanoids by Loza, V. V., Valiullina, Z. R., Miftakhov, M. S.

“…1,3-Cyclopentadienes, fulvenes and their derivatives regio- and stereoselectively react with the in situ generated dichloroketene to form the corresponding…”
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Synthesis of 2-(16,17-Epoxy-3β,20-dihydroxypregn-5-en-20-yl)-1,3-dithiane from Diosgenin by Valiullina, Z. R., Khasanova, L. S., Miftakhov, M. S.

“…–2-(16,17-Epoxy-3β,20-dihydroxypregn-5-en-20-yl)-1,3-dithiane, a new promising synthon for the OSW-1 aglycone and its analogs, was synthesized from diosgenin…”
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Synthesis of a C3 Hydroxyproline-modified Carbapenem by Valiullina, Z. R., Galeeva, A. M., Miftakhov, M. S.

“…Methyl (4 R )-4-hydroxy-1-(sulfanylacetyl)-l-prolinate was synthesized starting from trans -4-l-hydroxyprolinate methyl ester hydrochloride and then reacted…”
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Synthesis of (3S,4S)-4-Acetyl-3-(1R)-1-hydroxyethyl-1-(4-methoxyphenyl)azetidin-2-one by Selezneva, N. K., Galeeva, A. M., Valiullina, Z. R., Miftakhov, M. S.

“…The synthesis of the title compound from l-threonine with the participation of β-methallyl chloride amide in the N -alkylation step is described…”
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β-Lactam Ring Opening in the Reformatsky Reaction of (3R,4R)-4-Acetoxy-3-((1R)-1-{[tert-butyl(dimethyl)silyl]oxy}ethyl)azetidin-2-one with Ethyl 4-Bromo-3-oxopentanoate by Valiullina, Z. R., Galeeva, A. M., Miftakhov, M. S.

“…The Reformatsky reaction of (3 R ,4 R )-4-acetoxy-3-((1 R )-1-{[ tert -butyl(dimethyl)silyl]oxy}ethyl)­azetidin-2-one with ethyl 4-bromo-3-oxopentanoate gave…”
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Synthesis of the 2,3-Asyridinyl Derivative of d-Carvone by Selezneva, N. K., Sunagatullina, G. R., Valiullina, Z. R., Miftakhov, M. S.

“…2,3-Asyridinylcarvone was synthesized from epoxycarvone through the stages of regio- and stereoselective opening of the epoxy ring under the action of NaN 3 in…”
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Reactions of 2,3-Dibromo-2-methylpropanamides Promoted by Potassium tert-Butoxide by Galeeva, A. M., Valiullina, Z. R., Selezneva, N. K., Miftakhov, M. S.

“…2,3-Dibromo-2-methylpropanamides with different substituents on the nitrogen atom were synthe­sized, and their transformations by the action of potassium tert…”
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Regioselective Intermolecular Cyclization of Methyl (E)-3-[(4S,5S)-5-Acetyl-2,2-dimethyl-1,3-dioxolan-4-yl)]prop-2-enoate by Valiullina, Z. R., Ivanova, N. A., Lobov, A. N., Miftakhov, M. S.

“…Methyl ( E )-3-[(4 S ,5 S )-5-acetyl-2,2-dimethyl-1,3-dioxolan-4-yl)]prop-2-enoate obtained from D-ribose eliminates water on storage and transforms into a…”
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Acid-Catalyzed Acetonation of D-Ribose by Valiullina, Z. R., Ivanova, N. A., Shavaleeva, G. A., Akhmetdinova, N. P., Lobov, A. N., Abdullin, M. F., Miftakhov, M. S.

“…With the goal of identifying by-products in the cyanation of an imidate donor with trimethylsilyl cyanide, the main compounds formed in the sulfuric acid-, p…”
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Chiral 7-Oxabicyclo[2.2.1]heptane Building Blocks for Prostanoids by Valiullina, Z. R., Ivanova, N. A., Shitikova, O. V., Miftakhov, M. S.

“…Methyl (Z)-3-[(2 R ,3 R ,4 S ,5 S )-5-(2-methoxy-2-oxoethyl)-3,4-(isopropylidenedioxy)tetrahydrofuran-2-yl]-prop-2-enoate was synthesized, and its…”
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Primary Amine–Promoted Ring Opening in Carbapenem-derived p-Nitrobenzyl Esters by Valiullina, Z. R., Galeeva, А. М., Lobov, А. N., Miftakhov, М. S.

“…Ethylamine and ethanolamine react with 4-nitrobenzyl (4 R ,5 S ,6 S )-3-[(2-furylmethyl)sulfanyl]-6-[(1 R…”
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Low-Temperature Reactions of α-Bromopropanoyl Chloride with Lithium Derivative of Ethyl Acetate by Valiullina, Z. R., Khasanova, L. S., Galeeva, A. M., Selezneva, N. K., Miftakhov, M. S.

“…The reaction of 2-bromopropanoyl chloride with lithium ethyl acetate generated in situ by the reaction of equimolar amounts of lithium diisopropylamide with…”
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Synthesis of β-Lactam and Anomalous Minor Products in the (i-Pr)2NEt-Promoted Reaction of N-Chloroglycine Methyl Ester Derivative with Dichloroacetyl Chloride by Valiullina, Z. R., Galeeva, A. M., Selezneva, N. K., Miftakhov, M. S.

“…Apart from the expected [2 + 2]-cycloaddition product, the reaction of N -chloro- N -(2-methoxy-2-oxoethyl)-β-alanine methyl ester with dichloroacetyl chloride…”
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New Azetidinone Building Block for Carbapenems by Khasanova, L. S., Valiullina, Z. R., Galeeva, A. M., Egorov, V. A., Gimalova, F. A.

“…A new versatile building block for the synthesis of carbapenems, (3 S ,4 R )-3-{( R )-1-[ tert -butyl-(dimethyl)silyloxy]ethyl}-4-[(2 RS…”
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Synthesis and In Vitro Antibacterial Activity of New C-3-Modified Carbapenems by Valiullina, Z. R., Galeeva, A. M., Gimalova, F. A., Selezneva, N. K., Khasanova, L. S., Mavzyutov, A. R., Miftakhov, M. S.

“…New C-3 modified carbapenems have been synthesized by the Ad N E-substitution of the enol phosphate group of 4-nitrobenzyl (4 R…”
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Methyl 2-(Bromomethyl)acrylate, Methyl Acrylate, and Glycine in the Synthesis of Functionalized Pyrrolidones by Selezneva, N. K., Valiullina, Z. R., Galeeva, A. M., Spirikhin, L. V., Miftakhov, M. S.

“…Possible application of methyl 2-(bromomethyl)acrylate, methyl acrylate, and glycine in the synthesis of functionalized pyrrolidones was considered…”
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Unusual course of “enolate-imine” condensation in approach to β-lactams by Valiullina, Z. R., Gimalova, F. A., Spirikhin, L. V., Miftakhov, M. S.

“…In reaction of methyl ( Е )-3-(methoxycarbonyl)methylimino-2,2-dimethylpropanoate with enolate of ethyl 3-hydroxybutanoate an abnormal reaction product was…”
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(2R,3R)-3-[(1R)-1-{[tert-Butyl(dimethyl)silyl]oxy}ethyl]-4-oxoazetidin-2-yl Acetate in Zinc- and Samarium-Promoted Substitution Reactions with Methyl 2-Bromopropanoate and Methyl (2-Bromomethyl)prop-2-enoate. Unusual Cleavage of the N1‒C4 Bond in Azetidin-2-one Derivative with Migration of Methoxycarbonyl Group in Synthetic Approaches to Carbapenems and Their Analogs by Valiullina, Z. R., Khasanova, L. S., Selezneva, N. K., Spirikhin, L. V., Belokon’, Yu. N., Miftakhov, M. S.

“…The use of zinc in Barbier-type reactions of (2 R ,3 R )-3-[(1 R )-1-{[ tert -butyl(dimethyl)silyl]oxy}-ethyl]-4-oxoazetidin-2-yl acetates with halogen…”
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