Patents by Inventor Kwang Hyeg Lee
Kwang Hyeg Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7329780Abstract: Provided is a method of preparing an optically pure compound having formula 1 or its salts. The method includes: reacting (R)-2-(4-methoxy-3-aminosulfonyl-phenyl)-1 -methylethylamine or its salts with a compound selected from the group consisting of chloroacetic acid, bromoacetic acid, fluoroacetic acid, iodoacetic acid, ?-halogenoacetic acid anhydride, and ?-halogenoacetyl halide in the presence of a base or an acylating agent.Type: GrantFiled: December 9, 2004Date of Patent: February 12, 2008Assignee: CJ CorporationInventors: Seong Hwan Cho, Dong Kwon Lim, Kwang Hyeg Lee, Yong Sik Youn, Choong Sil Park
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Patent number: 7288652Abstract: Provided is a method for preparing oltipraz. The method includes reacting methyl 2-methyl-3-(pyrazin-2-yl)-3oxopropionate with phosphorus pentasulfide in the presence of a mixed solvent of toluene and xylene, followed by recrystallization.Type: GrantFiled: November 25, 2003Date of Patent: October 30, 2007Assignee: CJ CorporationInventors: Jin Wan Kim, Kwang Do Choi, Jee Woong Lim, Kwang Hyeg Lee, Sang Ho Lee
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Publication number: 20060106079Abstract: Provided is a method for preparing oltipraz. The method includes reacting methyl 2-methyl-3-(pyrazin-2-yl)-3oxopropionate with phosphorus pentasulfide in the presence of a mixed solvent of toluene and xylene, followed by recrystallization.Type: ApplicationFiled: November 25, 2003Publication date: May 18, 2006Applicant: CJ CORPORATIONInventors: Jin Kim, Kwang Dong Choi, Jee Woong Lim, Kwang Hyeg Lee, Sang Ho Lee
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Patent number: 7015238Abstract: A novel crystalline organic acid salt of amlodipine having improved physiochemical properties, a preparation method thereof and a pharmaceutical composition comprising the same are provided.Type: GrantFiled: August 29, 2003Date of Patent: March 21, 2006Assignee: CJ Corp.Inventors: Dong Kwon Lim, Hyuk Koo Lee, Hea Ran Suh, Seong Hwan Cho, Kwang Hyeg Lee, Yun Cheul Kim, Sung Hak Jung, Sung Hak Lee, Hyun Suk Kang, Kyung Mi Park, Yun Taek Jung, Jun Hee Cheon, Choong Sil Park, Yong Sik Youn, Young Hoon Kim, Kyu Jeong Yeon, Myeong Yun Chae, Hae Tak Jin
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Patent number: 6906204Abstract: The present invention relates to a processing method for preparing lovastatin and simvastatin which comprises the steps of (1) performing lactonization of mevinic acid and its homologous compounds in the presence of a mixed organic solvent without an acid catalyst through nitrogen sweep; and (2) making crystals. In the process of the present invention, lovastatin and simvastatin highly purified can be produced in a high yield and especially, heterodimers formed as a by-product can be reduced remarkably. Therefore, the processing method of the present invention can be convenient and economical.Type: GrantFiled: November 14, 2002Date of Patent: June 14, 2005Assignee: CJ Corp.Inventors: Kwang-hyeg Lee, Jin-wan Kim, Kwang-do Choi, Sang-ho Lee, Hong-suk Cho
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Patent number: 6903124Abstract: Disclosed are a novel organic acid salt of amlodipine, its preparation method, and a pharmaceutical composition containing as a therapeutically active ingredient the same.Type: GrantFiled: July 29, 2003Date of Patent: June 7, 2005Assignee: CJ CorpInventors: Seong Hwan Cho, Yong Sik Youn, Yun Taek Jung, Choong Sil Park, Hyuk Koo Lee, Kwang Hyeg Lee, Eun Ju Jeong, Young Hoon Kim, Hae Tak Jin, Jun Hee Cheon, Sung Hak Lee, Sung Hak Jung, Dong Kwon Lim, Kyu Jeong Yeon, Yun Cheul Kim, Kyung Mi Park, Hyun Suk Kang
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Patent number: 6890944Abstract: Disclosed are a novel organic acid salt of amlodipine, its preparation method, and a pharmaceutical composition containing the same as a therapeutically active ingredient.Type: GrantFiled: July 29, 2003Date of Patent: May 10, 2005Assignee: CJ CorporationInventors: Seong Hwan Cho, Yong Sik Youn, Yun Taek Jung, Choong Sil Park, Hyuk Koo Lee, Kwang Hyeg Lee, Eun Ju Jeong, Young Hoon Kim, Hae Tak Jin, Jun Hee Cheon, Sung Hak Lee, Sung Hak Jung, Dong Kwon Lim, Kyu Jeong Yeon, Yun Cheul Kim, Kyung Mi Park, Hyun Suk Kang
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Patent number: 6846931Abstract: Disclosed are a novel organic acid salt of amlodipine, its preparation method, and a pharmaceutical composition containing the same as a therapeutically active ingredient.Type: GrantFiled: August 19, 2003Date of Patent: January 25, 2005Assignee: CJ CorpInventors: Yong Sik Youn, Seong Hwan Cho, Choong Sil Park, Yun Cheul Kim, Dong Kwon Lim, Sung Hak Jung, Sung Hak Lee, Hyun Suk Kang, Kyung Mi Park, Yun Taek Jung, Young Hoon Kim, Kyu Jeong Yeon, Myeong Yun Chae, Hae Tak Jin, Hea Ran Suh, Kwang Hyeg Lee, Hyuk Koo Lee
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Publication number: 20040158075Abstract: Disclosed are a novel organic acid salt of amlodipine, its preparation method, and a pharmaceutical composition containing the same as a therapeutically active ingredient.Type: ApplicationFiled: August 19, 2003Publication date: August 12, 2004Applicant: CJ CorporationInventors: Yong Sik Youn, Seong Hwan Cho, Choong Sil Park, Yun Cheul Kim, Dong Kwon Lim, Sung Hak Jung, Sung Hak Lee, Hyun Suk Kang, Kyung Mi Park, Yun Taek Jung, Young Hoon Kim, Kyu Jeong Yeon, Myeong Yun Chae, Hae Tak Jin, Hea Ran Suh, Kwang Hyeg Lee, Hyuk Koo Lee
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Patent number: 6756390Abstract: Disclosed are a novel organic acid salt of amlodipine with superb physicochemical properties, its preparation method, and a pharmaceutical composition containing the same as a therapeutically active ingredient.Type: GrantFiled: July 29, 2003Date of Patent: June 29, 2004Assignee: CJ Corp.Inventors: Seong Hwan Cho, Yong Sik Youn, Yun Taek Jung, Choong Sil Park, Hyuk Koo Lee, Kwang Hyeg Lee, Eun Ju Jeong, Young Hoon Kim, Hae Tak Jin, Jun Hee Cheon, Sung Hak Lee, Sung Hak Jung, Dong Kwon Lim, Kyu Jeong Yeon, Yun Cheul Kim, Kyung Mi Park, Hyun Suk Kang
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Publication number: 20040058967Abstract: A novel crystalline organic acid salt of amlodipine having improved physiochemical properties, a preparation method thereof and a pharmaceutical composition comprising the same are provided.Type: ApplicationFiled: August 29, 2003Publication date: March 25, 2004Inventors: Dong Kwon Lim, Hyuk Koo Lee, Hea Ran Suh, Seong Hwan Cho, Kwang Hyeg Lee, Yun Cheul Kim, Sung Hak Jung, Sung Hak Lee, Hyun Suk Kang, Kyung Mi Park, Yun Taek Jung, Jun Hee Cheon, Choong Sil Park, Yong Sik Youn, Young Hoon Kim, Kyu Jeong Yeon, Myeong Yun Chae, Hae Tak Jin
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Publication number: 20040029931Abstract: Disclosed are a novel organic acid salt of amlodipine, its preparation method, and a pharmaceutical composition containing as a therapeutically active ingredient the same.Type: ApplicationFiled: July 29, 2003Publication date: February 12, 2004Applicant: CJ CorpInventors: Seong Hwan Cho, Yong Sik Youn, Yun Taek Jung, Choong Sil Park, Hyuk Koo Lee, Kwang Hyeg Lee, Eun Ju Jeong, Young Hoon Kim, Hae Tak Jin, Jun Hee Cheon, Sung Hak Lee, Sung Hak Jung, Dong Kwon Lim, Kyu Jeong Yeon, Yun Cheul Kim, Kyung Mi Park, Hyun Suk Kang
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Publication number: 20040029923Abstract: Disclosed are a novel organic acid salt of amlodipine with superb physicochemical properties, its preparation method, and a pharmaceutical composition containing the same as a therapeutically active ingredient.Type: ApplicationFiled: July 29, 2003Publication date: February 12, 2004Applicant: CJ CorporationInventors: Seong Hwan Cho, Yong Sik Youn, Yun Taek Jung, Choong Sil Park, Hyuk Koo Lee, Kwang Hyeg Lee, Eun Ju Jeong, Young Hoon Kim, Hae Tak Jin, Jun Hee Cheon, Sung Hak Lee, Sung Hak Jung, Dong Kwon Lim, Kyu Jeong Yeon, Yun Cheul Kim, Kyung Mi Park, Hyun Suk Kang
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Publication number: 20040030143Abstract: Disclosed are a novel organic acid salt of amlodipine, its preparation method, and a pharmaceutical composition containing the same as a therapeutically active ingredient.Type: ApplicationFiled: July 29, 2003Publication date: February 12, 2004Applicant: CJ CorpInventors: Seong Hwan Cho, Yong Sik Youn, Yun Taek Jung, Choong Sil Park, Hyuk Koo Lee, Kwang Hyeg Lee, Eun Ju Jeong, Young Hoon Kim, Hae Tak Jin, Jun Hee Cheon, Sung Hak Lee, Sung Hak Jung, Dong Kwon Lim, Kyu Jeong Yeon, Yun Cheul Kim, Kyung Mi Park, Hyun Suk Kang
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Patent number: 6649775Abstract: The present invention relates to a process for preparing lovastatin and simvastatin which comprises (1) performing step of a lactonization of mevinic acid and analog thereof compounds in the presence of a dehydrating agent and without an acid catalyst under nitrogen sweep; and then (2) making step of crystals at a high temperature. In the process of the present invention, lovastatin and simvastatin highly purified can be produced in a high yield and especially, heterodimers formed as a by-product can be reduced in an amount remarkably. Therefore, the process of the present invention is convenient and economical.Type: GrantFiled: July 23, 2002Date of Patent: November 18, 2003Assignee: Cheil Jedang CorporationInventors: Kwang-Hyeg Lee, Jin-Wan Kim, Myeong-Sik Yoon, Kwang-Do Choi, Sang-Ho Lee, Hong-Suk Cho
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Publication number: 20030109723Abstract: The present invention relates to a processing method for preparing lovastatin and simvastatin which comprises the steps of (1) performing lactonization of mevinic acid and its homologous compounds in the presence of a mixed organic solvent without an acid catalyst through nitrogen sweep; and (2) making crystals. In the process of the present invention, lovastatin and simvastatin highly purified can be produced in a high yield and especially, heterodimers formed as a by-product can be reduced remarkably. Therefore, the processing method of the present invention can be convenient and economical.Type: ApplicationFiled: November 14, 2002Publication date: June 12, 2003Applicant: CJ CORP.Inventors: Kwang-hyeg Lee, Jin-wan Kim, Kwang-do Choi, Sang-ho Lee, Hong-suk Cho
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Publication number: 20030050482Abstract: The present invention relates to a process for preparing lovastatin and simvastatin which comprises (1) performing step of a lactonization of mevinic acid and analog thereof compounds in the presence of a dehydrating agent and without an acid catalyst under nitrogen sweep; and then (2) making step of crystals at a high temperature. In the process of the present invention, lovastatin and simvastatin highly purified can be produced in a high yield and especially, heterodimers formed as a by-product can be reduced in an amount remarkably. Therefore, the process of the present invention is convenient and economical.Type: ApplicationFiled: July 23, 2002Publication date: March 13, 2003Inventors: Kwang-Hyeg Lee, Jin-Wan Kim, Myeong-Sik Yoon, Kwang-Do Choi, Sang-Ho Lee, Hong-Suk Cho