Sk Biopharmaceuticals Co., Ltd.

Sk Energy Co., Ltd.

Sk Innovation Co., Ltd.

Sk Holdings Co., Ltd.

Byong Sung Kwak

Sang Mi Chae

Eun Hee Chae

Young Soon Kang

Hong Sik Moon

Dae Joong Im

Ki Ho Lee

Jin Woong Kim

Tae Jin Kim

Seung Hoon Oh

Jin Hong Kim

Sang Il Lee

Tae Yun Kim

Dae Hyun Choo

Young Min Chung

Young Seek Yoon

Jong Ho Lim

Han Ju Yi

Han-Ju Yi

Ki Ho Koh

Mee Sook Lim

Hee Jun Hwang

There is provided a novel carbamoyloxy arylalkanoyl arylpiperazine derivative compound having abundant racemic or enantiomeric characteristics, represented by the Formula 1, and pharmaceutically available salts or hydrates thereof. Also, there are provided a pharmaceutical composition for treating pain, anxiety or depression including an effective amount of the compound, and a method for treating pain, anxiety or depression in mammals by administering an effective amount of the compound to the mammals in need of treatment thereof.

Method for treating pain, anxiety or depression using carbamoyloxy alkanoyl piperazine compound

Carbamoyloxy arylalkanoyl arylpiperazine analgesics

Disclosed is a method of preparing 3-hydroxytetrahydrofuran using cyclodehydration. More particularly, this invention relates to a method of preparing 3-hydroxytetrahydrofuran, including subjecting 1,2,4-butanetriol to cyclodehydration under reaction conditions of a reaction temperature of 30&#x2dc;180&#xb0; C. and reaction pressure of 5000 psig or less in the presence of a strong acid cation exchange resin catalyst having a sulfonic acid group as an exchange group. According to the method of this invention, 3-hydroxytetrahydrofuran can be economically prepared at higher yield and productivity than when using conventional methods.

Method for preparing 3-hydroxytetrahydrofuran using cyclodehydration

Disclosed herein are a platinum-based catalyst for oxidation/reduction reactions and the use thereof. The platinum-based catalyst is prepared by loading a catalyst composition comprising a water soluble salt of at least one metal selected from among cerium (Ce), zirconium (Zr) and rhenium (Re), on a support comprising at least one selected from among alumina, silica and titania. The disclosed catalyst can be prepared in a simple manner without any particular limitation as to the kind of usable water soluble platinum salt, and when it is applied to various oxidation reactions, including water gas shift reactions of carbon monoxide, three-way catalytic reactions, and selective oxidation reactions of carbon monoxide, and to reduction reactions, such as reactions of removing nitrogen oxide (NOx), it will show excellent catalytic activity. In particular, the disclosed catalyst shows excellent performance even in a specific temperature range in which it is difficult to apply the prior high-temperature water gas shift reaction catalyst and low-temperature water gas shift reaction catalyst. Also, it can remove carbon monoxide even at high temperatures without the loss of hydrogen caused by methanataion, and thus is particularly useful in a hydrogen production process of producing high-purity hydrogen for fuel cells.

Platinum based catalyst for oxidation/reduction reaction and its use

Disclosed herein is a method of regenerating a titanium-containing molecular sieve catalyst. Particularly, this invention provides a method of regenerating a titanium-containing molecular sieve catalyst used in epoxidation of olefin through simple treatment using a mixture solvent comprising aqueous hydrogen peroxide and alcohol. According to the method of this invention, when the catalyst having decreased activity is regenerated, the activity of the regenerated catalyst is equal to that of new catalyst and can be maintained stable for a long period of time.

Method of regeneration of titanium-containing molecular sieve catalyst

Growing community of inventors

Daejeon, South Korea

Byong Sung Kwak