31554-16-2Relevant academic research and scientific papers
Diastereoselective Synthesis of CF3-Substituted Spiroisochromans by [1,5]-Hydride Shift/Cyclization/Intramolecular Friedel-Crafts Reaction Sequence
Tamura, Risa,Kitamura, Eriko,Tsutsumi, Ryosuke,Yamanaka, Masahiro,Akiyama, Takahiko,Mori, Keiji
, p. 2383 - 2387 (2019/03/29)
Developed herein is a diastereoselective synthesis of CF3-substituted spiroisochromans via C(sp3)-H bond functionalization involving sequential transformations ([1,5]-hydride shift/cyclization/elimination of MeOH/intramolecular Friedel-Crafts reaction).
An Improvement of the Palladium-Catalyzed [4+2] Cycloaddition of o -(Silylmethyl)benzyl Carbonates with Alkenes
Jin, Yushu,Ishizuka, Kentaro,Kuwano, Ryoichi
, p. 2488 - 2492 (2015/07/27)
The palladium complex, which is generated in situ from Pd(η 3-C3H5)Cp and tris(4-methoxy-3,5-dimethylphenyl)phosphine, catalyzed the [4+2] cycloaddition of o-(silylmethyl)benzyl carbonates with alkenes. The reaction of the
Rearrangement-cleavage of ammonium salts containing a 3-methyl-2- naphthylmethyl group
Oganesyan,Grigoryan,Babayan,Kocharyan
, p. 951 - 956 (2007/10/03)
The example of the rearrangement-cleavage under the action of 25% aqueous potassium hydroxide at 90-92°C of ammonium salts containing both 3-methyl-2-naphthylmethyl and 2-bromoethyl, allyl, methallyl, 2-bromoallyl, 3-phenylallyl, 2-propynyl, or 3-phenylphenyl-2-propynyl groups was used to show that the reaction always involves the aromatic ring of the 3-methyl-2- naphthylmethyl group. Along with rearrangement-cleavage, nucleophilic substitution of the 2-naphthylmethyl group takes place.
Electron-transfer-induced reductive cleavage of phthalans: Reactivity and synthetic applications
Azzena, Ugo,Demartis, Salvatore,Melloni, Giovanni
, p. 4913 - 4919 (2007/10/03)
The behavior of phthalan (1a) was investigated under conditions of electron transfer from alkali metals in aprotic solvents. Reaction with lithium in the presence of a catalytic amount of naphthalene in THF led to the reductive cleavage of an arylmethyl carbon-oxygen bond, with formation of a stable dilithium compound. Trapping of this intermediate with several electrophiles (alkyl halides, carbonyl derivatives, CO2) was successful. The extension of this procedure to several substituted phthalans (1b-i) was investigated, and the regiochemistry as well as the synthetic usefulness of these reactions are discussed.
SPIROINDANE OPIATE ANALOGS
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, (2008/06/13)
The present invention provides biologically active compounds of the formulas (I) and (II): (* CHEMICAL STRUCTURE *) (I) (* CHEMICAL STRUCTURE *) (II) wherein R3 is H or a hydroxyl protecting group, R2 is OH, H or a protected hydroxyl group, R1 is alkyl, c
Antihyperglycemic Activity of Novel Naphthalenyl 3H-1,2,3,5-Oxathiadiazole 2-Oxides
Ellingboe, John W.,Lombardo, Louis J.,Alessi, Thomas R.,Nguyen, Thomas T.,Guzzo, Frieda,et al.
, p. 2485 - 2493 (2007/10/02)
A series of naphthalenyl 3H-1,2,3,5-oxathiadiazole 2-oxides was prepared and tested for antihyperglycemic activity in the db/db mouse, a model for type 2 (non-insulin dependent) diabetes mellitus.Substitution at the 1-,5-, or 8-positions of the naphthalene ring with a halogen was found to be beneficial to antihyperglycemic activity. 4--3H-1,2,3,5-oxathiadiazole 2-oxide (45), one of the most potent compounds in this series, was selected for further pharmacological evaluation.
Novel naphthalenyl-3H-1,2,3,5-oxathiadiazole 2-oxides useful as antihyperglycemic agents
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, (2008/06/13)
This invention relates to novel substituted 3H-1,2,3,5-oxathiadiazole 2-oxides, processes for their preparation, to methods for using the compounds, and to pharmaceutical preparations thereof. The compounds have pharmaceutical properties which render them beneficial for the treatment of diabetes mellitus and associated conditions.
Novel naphthalenylalkyl-3H-1,2,3,5-oxathiadiazole 2-oxides useful as antihyperglycemic agents
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, (2008/06/13)
This invention relates to novel [(substituted naphthalenyl)alkyl]-3H-1,2,3,5-oxathiadiazole 2-oxides, to the processes for their preparation, to methods for using the compounds, and to pharmaceutical compositions thereof. The compounds have pharmaceutical
