Knu-industry Cooperation Foundation

Kangwon National University Industry Cooperation Foundation

Phil Ho Lee

Seo Hyun Shin

Dong Jin Kang

Yeon Seok Jeong

Won Seok Choi

Da Han Eom

Yea Rin Kim

Jungyeon Lee

Seok-Ju Lee

Byeong Su Kim

Young Chul Park

Sang June Park

In Cheol Jeon

Tae Kyu Ryu

Jung Min Seo

Bo Ram Seo

Yonghyeon Baek

Koo Yeon Lee

Kyusik Um

Jun Tae Mo

Taekyu Ryu

Disclosed is a method of preparing ezetimibe, including cross-metathesis using a Grubbs 2catalyst and deprotection using a Pearlman's catalyst, and an intermediate thereof. The method of preparing ezetimibe is useful as an efficient ezetimibe synthesis technique in pharmaceutical fields using ezetimibe as a raw material.

Method of preparing ezetimibe and intermediate thereof

Provided are an imidazo[1,2-a]pyridine-3-carboxylate derivative and a preparation method thereof, and more particularly, a method of effectively preparing an imidazo[1,2-a]pyridine-3-carboxylate derivative by performing an aza-[3+2] cycloaddition reaction of a pyridine derivative with an &#x3b1;-diazo oxime ether derivative in the presence of a copper (II) catalyst, and an imidazo[1,2-a]pyridine-3-carboxylate derivative prepared thereby.

Imidazo[1,2-A]pyridine-3-carboxylate derivative and preparation method thereof

Provided are novel cyclic phosphinate derivatives and a method of preparing the same, and more particularly, cyclic phosphinate derivatives including benzoxaphosphole oxide derivatives and benzoxaphosphorin oxide derivatives, and a method of preparing the same. The cyclic phosphinate derivative according to the present invention may have pharmacological and physiological activities, be used as the basic skeleton of the natural material, and be used in development of a new drug, and synthesis of various medicines. In addition, with the method of preparing a cyclic phosphinate derivative according to the present invention, various cyclic phosphinate derivatives may be prepared with high yield through a simple synthetic process by performing an intramolecular carbon-oxygen coupling reaction on the phosphinic acid derivative in the presence of a palladium (Pd) catalyst, an oxidant, and a base.

Cyclic phosphinate derivatives and method of preparing the same

Provided are a novel phosphinine oxide derivative and a preparation method thereof, and more specifically, the phosphinine oxide derivative includes an oxaphosphinine oxide derivative and an azaphosphinine oxide derivative. The phosphinine oxide derivative according to the present invention may have a pharmacological activity and a physiological activity, and may be used as a basic framework of a natural product and may be used for development of new drug and synthesis of various medical supplies. In addition, according to the preparation method of the phosphinine oxide derivative according to the present invention, various phosphinine oxide derivatives with a high yield may be prepared by a simple synthesis process using an intramolecular annulation between a phosphinic derivative and an alkyne derivative in the presence of a rhodium (Rh) catalyst or a ruthenium (Ru) catalyst and an oxidant.

Phosphinine oxide derivative and preparation method thereof

Provided are a novel phosphorus 2-pyrone derivative and a preparation method thereof. The phosphorus 2-pyrone derivative according to the present invention is capable of being efficiently synthesized by treating an alkyl hydrogen alkynylphosphonate derivative and an alkyne derivative with a minimal amount of a gold catalyst.

Phosphorus 2-pyrone derivative and preparation method thereof

Provided are novel dihydro-1H-phosphole 1-oxide derivatives and a preparation method thereof. More particularly, the dihydro-1H-phosphole 1-oxide derivatives include 1,3-dihydro-1H-2,1-oxaphosphole 1-oxide derivatives and 2,3-dihydro-1H-2,1-azaphosphole 1-oxide derivatives. Further, in the preparation method of a dihydro-1H-phosphole 1-oxide derivative according to the present invention, various phosphinine oxide derivatives may be prepared with high yield by a simple synthesis process by reacting a phosphinic derivative and a vinyl derivative with each other in the presence of a rhodium (Rh) catalyst, an oxidant, and a base.

Dihydro-1H-phosphole 1-oxide derivatives and preparation method thereof

The present invention relates to 4-alkenyl-2-azetidinone derivatives, a process for preparing 4-alkenyl-2-azetidinone derivatives and multicyclic compounds prepared using 4-alkenyl-2-azetidinone derivatives. More specifically, the present invention relates to a 4-alkenyl-2-azetidinone derivative having a novel structure represented by the following chemical formula 1, in which an alkenyl group such as 1,3-dien-2-yl or 1,2,4,5-hexatetraen-3-yl is substituted at the C-4 position of azetidinone; to a process for preparing the 4-alkenyl-2-azetidinone derivative by reacting 4-acetoxy-2-azetidinone with organic indium, which is prepared by reacting a propargyl halide derivative with indium; and to a novel multicyclic compound prepared using the compound represented by the following chemical formula 1 as an intermediate in the Diels-Alder reaction. 

4-alkenyl-2-azetidinone derivatives, process for preparing 4-alkenyl-2-azetidinone derivatives and multicyclic compounds prepared using 4-alkenyl-2-azetidinone derivatives

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Chuncheon-si, South Korea

Phil Ho Lee