Patent application number | Description | Published |
20110081393 | COOLING SENSATION AGENT COMPOSITION, SENSORY STIMULATION AGENT COMPOSITION AND USE OF THE SAME - Disclosed is a cooling sensation agent composition or sensory stimulation agent composition which contains at least one of diester compounds of dicarboxylic acid represented by the formula (1) wherein A represents CH | 04-07-2011 |
20130030193 | PROCESS FOR PRODUCING WINE LACTONE - The present invention relates to a method comprising (A) reacting a β-keto ester with a 2-halo ester under basic conditions to obtain a 2-aceto-3-methyl-succinic acid ester; (B) reacting the resulting 2-aceto-3-methyl-succinic acid ester with methyl vinyl ketone under basic conditions, optionally followed by a decarboxylation reaction and hydrolysis, etc., to obtain an α-methyl-γ-keto acid; and (C) reducing the resulting α-methyl-γ-keto acid to obtain wine lactone or a stereoisomer thereof or a mixture thereof. Alternatively, the present invention relates to a method comprising step (A) as recited above; (B) reacting the resulting 2-aceto-3-methyl-succinic acid ester with methyl vinyl ketone under basic conditions, followed by decarboxylation reaction to obtain an α-methyl-γ-keto acid ester; and (E) reducing the resulting α-methyl-γ-keto acid ester in the presence of a ruthenium complex having a specific structure and in the presence of a hydrogen donor to obtain wine lactone or a stereoisomer thereof or a mixture thereof. | 01-31-2013 |
20130131169 | COOLING SENSATION AGENT COMPOSITION, SENSORY STIMULATION AGENT COMPOSITION AND USE OF THE SAME - Disclosed is a cooling sensation agent composition or sensory stimulation agent composition which contains at least one of diester compounds of dicarboxylic acid represented by the formula (1) wherein A represents CH | 05-23-2013 |
20130245286 | PROCESS FOR PRODUCING WINE LACTONE - The present invention relates to a method comprising (A) reacting a β-keto ester with a 2-halo ester under basic conditions to obtain a 2-aceto-3-methyl-succinic acid ester; (B) reacting the resulting 2-aceto-3-methyl-succinic acid ester with methyl vinyl ketone under basic conditions, optionally followed by a decarboxylation reaction and hydrolysis, etc., to obtain an α-methyl-γ-keto acid; and (C) reducing the resulting α-methyl-γ-keto acid to obtain wine lactone or a stereoisomer thereof or a mixture thereof. Alternatively, the present invention relates to a method comprising step (A) as recited above; (B) reacting the resulting 2-aceto-3-methyl-succinic acid ester with methyl vinyl ketone under basic conditions, followed by decarboxylation reaction to obtain an α-methyl-γ-keto acid ester; and (E) reducing the resulting α-methyl-γ-keto acid ester in the presence of a ruthenium complex having a specific structure and in the presence of a hydrogen donor to obtain wine lactone or a stereoisomer thereof or a mixture thereof. | 09-19-2013 |
20130245287 | PROCESS FOR PRODUCING WINE LACTONE - The present invention relates to a method comprising (A) reacting a β-keto ester with a 2-halo ester under basic conditions to obtain a 2-aceto-3-methyl-succinic acid ester; (B) reacting the resulting 2-aceto-3-methyl-succinic acid ester with methyl vinyl ketone under basic conditions, optionally followed by a decarboxylation reaction and hydrolysis, etc., to obtain an α-methyl-γ-keto acid; and (C) reducing the resulting α-methyl-γ-keto acid to obtain wine lactone or a stereoisomer thereof or a mixture thereof. Alternatively, the present invention relates to a method comprising step (A) as recited above; (B) reacting the resulting 2-aceto-3-methyl-succinic acid ester with methyl vinyl ketone under basic conditions, followed by decarboxylation reaction to obtain an α-methyl-γ-keto acid ester; and (E) reducing the resulting α-methyl-γ-keto acid ester in the presence of a ruthenium complex having a specific structure and in the presence of a hydrogen donor to obtain wine lactone or a stereoisomer thereof or a mixture thereof. | 09-19-2013 |
Patent application number | Description | Published |
20130136704 | P-MENTHANE-3,8-DIOL ISOMER MIXTURE, COMPOSITION COMPRISING THE SAME, AND PRODUCTS COMPRISING THE MIXTURE OR COMPOSITION - An object of the present invention is to provide a novel technology for preventing crystal precipitation of p-menthane-3,8-diol, and stable products utilizing this technology. Provided is a p-menthane-3,8-diol isomer mixture, wherein the mass ratio of cis isomers:trans isomers in terms of the relative configuration at Positions 3 and 4 is 55:45 to 45:55. Also provided are stable products and the like containing the p-menthane-3,8-diol isomer mixture. | 05-30-2013 |
20140219931 | P-MENTHANE-3,8-DIOL ISOMER MIXTURE, COOLING SENSATION COMPOSITION COMPRISING THE SAME, AND PRODUCT COMPRISING THE COOLING SENSATION COMPOSITION - The present invention relates to a p-menthane-3,8-diol isomer mixture 50% by mass or more of which is constituted of (1S)-isomers and a cooling sensation composition containing this mixture. The present invention also relates to a flavor and/or fragrance composition, food, beverage, cosmetic, daily use product, oral cavity composition, or pharmaceutical containing the p-menthane-3,8-diol isomer mixture in an amount of 0.0001 to 90% by mass. | 08-07-2014 |