Patents by Inventor Sung-eun Yoo

Sung-eun Yoo 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).

  • Patent number: 6482898
    Abstract: The present invention relates to novel halogenated Wang resins for combinational chemical synthesis, more specifically to halogenated Wang resins expressed by formula (1) useful for the effective tracing of combinational chemical synthetic process on solid supports using X-ray photoelectron spectroscopy (XPS) element analysis method; in formula (1), P represents polystyrene-divinylbenzene; X and Y represent hydrogen atom or halogen atom, which may be identical or different, their total number being 1-4; and at least one of them is halogen atom.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: November 19, 2002
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Sung Eun Yoo, Young Dae Gong, Jin Soo Seo
  • Patent number: 6413983
    Abstract: The present invention relates to novel benzopyranyl heterocycle derivatives of the formula 1, process for preparation thereof and pharmaceutical use of the benzopyranyl heterocycle derivatives. The benzopyranyl heterocycle derivatives of the present invention can be used for protecting heart, brain, retina and neuronal cell from “ischemia-reperfusion” injury, treatment for diseases related to it and suppressing lipid peroxidation. Wherein R1, R2, R3, R4, n and * are each defined in specification.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: July 2, 2002
    Assignee: Dongbu Hannong Chemical Co. Ltd.
    Inventors: Sung-Eun Yoo, Sun Kyung Lee, Kyu Yang Yi, Nak Jeong Kim, Jee Hee Suh, Hwa Sup Shin, Byung Ho Lee, Ho Won Seo, Hong Lim, Sun-Ok Kim, Dongha Lee, Insun Cho, Miae Namgung, Dongsoo Jang
  • Publication number: 20020049158
    Abstract: The bioavailability of a drug which is not readily absorbed in the digestive tract can be greatly enhanced by administering an oral composition comprising a drug and a compound of formula (I): 1
    Type: Application
    Filed: May 11, 2001
    Publication date: April 25, 2002
    Inventors: Jong-Soo Woo, Sung-Eun Yoo
  • Patent number: 6323238
    Abstract: The present invention relates to novel benzopyranyl guanidine derivatives of the formula 1, process for preparation therof and pharmaceutical use of the benzopyranyl guanidine derivatives. The benzopyranyl guanidine derivatives of the present invention can be used for protecting heart, neuronal cell or brain damage, preserving organs, and also the benzopyranyl guanidine derivatives are pharmacologically useful for inhibiting NO generation, and for suppressing lipid peroxidation, angiogenesis or restenosis. Wherein R1, R2, R3, R4, R5, R6, n and * are each defined in specification.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: November 27, 2001
    Assignee: Dongbu Hannong Chemical Co., Ltd.
    Inventors: Sung-Eun Yoo, Kyu Yang Yi, Sun Kyung Lee, Nak-Jeong Kim, Jee Hee Suh, Young Sook Park, Sun Kyung Hwang, Hwa Sup Shin, Byung Ho Lee, Ho Won Seo, Hong Lim, Sun-Ok Kim, In Sun Cho, Miae Namgoong, Dongsoo Jang
  • Patent number: 5849753
    Abstract: Substituted pyridyl imidazole derivatives of formula (I) inhibit effectively the action of angiotensin II and have a superior anti-hypertensive activity.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: December 15, 1998
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Sung-Eun Yoo, Kyu-Yang Yi, Sang-Hee Lee, Hye-Ryung Kim, Jee-Hee Suh, Nak-Jeong Kim, Seon-Ju Kim, Ok-Ja Cha, Young-Ah Shin, Wha-Sup Shin, Sung-Hou Lee, Yi-Sook Jung, Byung-Ho Lee, Ho-Won Seo
  • Patent number: 5691348
    Abstract: Novel pyridyl imidazole derivatives of formula(I) inhibit effectively the action of angiotensin II and have a superior antihypertensive activity: ##STR1## wherein: A is a straight, branched or cyclic C.sub.1 -C.sub.6 alkyl or alkenyl group, OR.sup.1 (wherein R.sup.1 is a hydrogen, or a straight, branched or cyclic C.sub.1 -C.sub.6 alkyl or alkenyl radical), or NR.sup.2 R.sup.3 (wherein R.sup.2 and R.sup.3 are independently a hydrogen, or a straight, branched or cyclic C.sub.1 -C.sub.6 alkyl radical);B is a group of the following formula ##STR2## D is a hydrogen; a halogen; a straight, branched or cyclic C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl or C.sub.2 -C.sub.6 alkynyl group which is optionally substituted with OH, a C.sub.1 -C.sub.4 alkoxy radical, CO.sub.2 R.sup.1, COR.sup.1, CON(R.sup.1).sub.2 or N(R.sup.1).sub.2, wherein R.sup.1 is the same as defined above; tetrazol-5-yl; a perfluoro-C.sub.1 -C.sub.4 alkyl group; or N(R.sup.1).sub.2, OR.sup.1, CO.sub.2 R.sup.1 or CON(R.sup.1).sub.2, wherein R.
    Type: Grant
    Filed: December 8, 1996
    Date of Patent: November 25, 1997
    Assignee: Daewoo Electronics Co., Ltd.
    Inventors: Sung-Eun Yoo, Kyu-Yang Yi, Sang-Hee Lee, Hye-Ryung Kim, Jee-Hee Suh, Nak-Jeong Kim, Seon-Ju Kim, Ok-Ja Cha, Young-Ah Shin, Wha-Sup Shin, Sung-Hou Lee, Yi-Sook Jung, Byung-Ho Lee, Ho-Won Seo, Hye-Suk Lee
  • Patent number: 5665738
    Abstract: Novel imidazole derivatives of formula(I) inhibit effectively the action of angiotensin II and have a superior antihypertensive activity: ##STR1## wherein: A is a straight, branched or cyclic C.sub.1 -C.sub.6 alkyl group, or OR.sub.1 wherein R.sub.1 is a hydrogen, or a straight, branched or cyclic C.sub.1 -C.sub.6 alkyl radical; B is a halogen, CF.sub.3 or CF.sub.2 CF.sub.3 ; X is N or N-oxide; Y is --CH.sub.2 --, --CH(OR.sub.1)-- wherein R.sub.1 is the same as defined above, or --C(.dbd.O)--; n is 0 or an integer of 1 to 4; Z is a halogen, --OH, --OR.sub.1, --NR.sub.1 R.sub.2, --N(.dbd.O)R.sub.3 R.sub.4, --C(.dbd.O)R.sub.1, --C(.dbd.O)OR.sub.1, --CH(OR.sub.1).sub.2 or --C(.dbd.O)N.sub.1 N.sub.2 wherein R.sub.1 is the same as defined above, R.sub.2 is, independently of R.sub.1, a hydrogen, or a straight, branched or cyclic C.sub.1 -C.sub.6 alkyl radical, and R.sub.3 and R.sub.4 are independently a straight, branched or cyclic C.sub.1 -C.sub.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: September 9, 1997
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Sung-Eun Yoo, Kyu-Yang Yi, Sang-Hee Lee, Hye-Ryung Kim, Jee-Hee Suh, Nak-Jeong Kim, Seon-Ju Kim, Ok-Ja Cha, Young-Ah Shin, Wha-Sup Shin, Sung-Hou Lee, Yi-Sook Jung, Byung-Ho Lee, Ho-Won Seo, Hye-Suk Lee
  • Patent number: 5493029
    Abstract: The present invention relates to novel benzopyran derivatives of formula (I) which have exellent effectiveness in the treatment of asthma as well as hypertension. ##STR1## wherein: R.sub.1 is --CN, --NO.sub.2, --OCX.sub.1 X.sub.2 X.sub.3, --NH.sub.2, --NHSO.sub.2 R.sup.A, ##STR2## --SO.sub.2 R.sup.C or --SO.sub.2 NR.sup.C R.sup.D wherein X.sub.1, X.sub.2 and X.sub.3 are, each independently, F, Cl or H, except for that X.sub.1, X.sub.2 and X.sub.3 may not be hydrogen atom simulaneously; R.sup.A and R.sup.B are, each independently, a hydrogen atom, or a C.sub.1-6 alkyl group or an optionally substituted phenyl group with a halogen atom, or a straight or branched C.sub.1-3 alkyl group; and R.sup.C and R.sup.D are, each independently, a hydrogen atom or a C.sub.1-6 alkyl group or an optionally substituted phenyl group with a halogen atom, or a straight or branched C.sub.1-3 alkyl group;R.sub.2 is a C.sub.1-4 straight or branched alkyl group;R.sub.3 is a C.sub.
    Type: Grant
    Filed: December 9, 1993
    Date of Patent: February 20, 1996
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Sung-Eun Yoo, Kyu Y. Yi, Nak C. Jeong, Jee H. Suh, Seon-Ju Kim, Hwa-Sup Shin, Byung H. Lee, Kyu S. Jung
  • Patent number: 5300511
    Abstract: The present invention relates to novel benzopyran derivatives of formula(I) which have exellent effectiveness in the treatment of asthma as well as hypertension. ##STR1## wherein R.sub.1 is --CN, --NO.sub.2, --OCX.sub.1 X.sub.2 X.sub.3, --NH.sub.2, --NHSO.sub.2 R.sup.A, ##STR2## --SO.sub.2 R.sup.C or --SO.sub.2 NR.sup.C R.sup.D wherein X.sub.1, X.sub.2 and X.sub.3 are, each independently, F, Cl or H, except for that X.sub.1, X.sub.2 and X.sub.3 may not be hydrogen atom simulaneously; R.sup.A and R.sup.B are, each independently, a hydrogen atom, or a C.sub.1-6 alkyl group or an optionally substituted phenyl group with a halogen atom, or a straight or branched C.sub.1-3 alkyl group; and R.sup.C and R.sup.D are, each independently, a hydrogen atom or a C.sub.1-6 alkyl group or an optionally substituted phenyl group with a halogen atom, or a straight or branched C.sub.1-3 alkyl group;R.sub.2 is a C.sub.1-4 straight or branched alkyl group;R.sub.3 is a C.sub.
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: April 5, 1994
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Sung-Eun Yoo, Kyu Y. Yi, Nak C. Jeong, Jee H. Suh, Seon-Ju Kim, Hwa-Sup Shin, Byung H. Lee, Kyu S. Jung
  • Patent number: 5236935
    Abstract: The present invention relates to novel benzopyran derivatives of formula (I) which have superior selectivity in the treatment of hypertension by lowering blood pressure with a relaxation activity on vascular smooth muscle. The present invention also relates to processes for preparing such compounds; and to a pharmaceutical compositions containing such compounds as an active ingredient. ##STR1## wherein: R.sub.1 is --CN, --NO.sub.2, --OCX.sub.1 X.sub.2 X.sub.3, --NH.sub.2, --NHSO.sub.2 R.sup.A, ##STR2## --SO.sub.2 R.sup.C or --SO.sub.2 NR.sup.C R.sup.D wherein X.sub.1, X.sub.2 and X.sub.3 are, each independently, a fluorine, chlorine or hydrogen atom; R.sup.A and R.sup.B are, each independently, an amino, C.sub.1-6 alkoxy, C.sub.1-6 alkyl group or an optionally substituted phenyl group; and R.sup.C and R.sup.D are a hydrogen atom, or a C.sub.1-6 alkyl group or an optionally substituted phenyl group with a halogen atom, or a straight or branched C.sub.1-3 alkyl group;R.sub.2 is ##STR3## wherein R.sup.
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: August 17, 1993
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Sung-Eun Yoo, Kyu Y. Yi, Nak C. Jeong, Jee H. Suh, Seon-Ju Kim, Hwa-Sup Shin, Byung H. Lee, Kyu S. Jung
  • Patent number: 4880804
    Abstract: Substituted benzimidazoles such as ##STR1## and pharmaceutically suitable salts thereof are useful as angiotensin II blockers. These compounds have activity in treating hypertension and congestive heart failure.
    Type: Grant
    Filed: January 7, 1988
    Date of Patent: November 14, 1989
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: David J. Carini, John Jonas V. Duncia, Sung-Eun Yoo
  • Patent number: 4450172
    Abstract: Polyhalohydroxyisopropyl phenylalka(e)noic acid esters of alkylaminohydroxypropyloxyphenylalkyl alcohols, such as 2-(4-((2-hydroxy-3-(1-methylethylamino)-phenyl)ethyl 3-(4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl))benzene propanoate, are useful as antihypertensive agents. Preferred compounds give vasodilatory activity and reduced tachycardia.
    Type: Grant
    Filed: March 10, 1982
    Date of Patent: May 22, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Sung-eun Yoo