Patents by Inventor Kenji Yoshimi
Kenji Yoshimi 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: 6096771Abstract: An isoxazole compound having the following formula: ##STR1## wherein R.sup.1 represents hydrogen, halogen, alkyl, alkoxy, hydroxyl, alkylthio, amino, alkanoyl, alkanoylamino, alkanoyloxy, alkoxycarbonyl, carboxy, (alkylthio)thiocarbonyl, carbamoyl, nitro or cyano; R.sup.2 represents an amino; m is 2 or 3; n is 1 to 6; ring A represents a phenyl ring, a naphthyl ring or an aromatic heterocycle; and X represents oxygen or sulfur. The isoxazole compound has an excellent monoamine oxidase inhibitory activity, and is useful for treating Parkinson's disease, depression and Alzheimer's disease.Type: GrantFiled: February 3, 1999Date of Patent: August 1, 2000Assignee: Sankyo Company, LimitedInventors: Koichi Kojima, Junichi Sakai, Yuichi Aizawa, Naozumi Samata, Masao Kozuka, Kenji Yoshimi, Isao Kaneko, Kazuo Koyama
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Patent number: 6005116Abstract: Isoxazole compounds having the following general formula: ##STR1## wherein R.sup.1 represents an optionally substituted aryl group or aromatic heterocyclic group; R.sup.2 represents a hydrogen atom, a halogen atom, an optionally substituted alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkenyl group, an alkoxy group, a cyano group, a carboxyl group, an alkanoyl group, an alkoxycarbonyl group or an optionally substituted carbamoyl group; R.sup.3 represents an optionally substituted amino group or a saturated heterocyclic group; X represents an oxygen atom or a sulfur atom; and n is an integer of from 2 to 6. These compounds have excellent monoamine oxidase inhibitory activity and are useful as a therapeutic agent or a preventive agent against nervous diseases such as depression.Type: GrantFiled: August 26, 1998Date of Patent: December 21, 1999Assignee: Sankyo Company, LimitedInventors: Koichi Kojima, Junichi Sakai, Naozumi Samata, Masao Kozuka, Kenji Yoshimi, Tsugio Kaneko
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Patent number: 5965591Abstract: An isoxazole compound having the following formula: wherein R.sup.1 represents hydrogen, halogen, alkyl, alkoxy, hydroxyl, alkylthio, amino, alkanoyl, alkanoylamino, alkanoyloxy, alkoxycarbonyl, carboxy, (alkylthio)thiocarbonyl, carbamoyl, nitro or cyano; R.sup.2 represents an amino; m is 1; n is 1 to 6; ring A represents a phenyl ring or a naphthyl ring; and X represents oxygen or sulfur. The isoxazole compound has an excellent monoamine oxidase inhibitory activity, and is useful for treating Parkinson's disease, depression and Alzheimer's disease.Type: GrantFiled: February 26, 1997Date of Patent: October 12, 1999Assignee: Sankyo Company, LimitedInventors: Koichi Kojima, Junichi Sakai, Yuichi Aizawa, Naozumi Samata, Masao Kozuka, Kenji Yoshimi, Isao Kaneko, Kazuo Koyama
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Patent number: 5321037Abstract: Compounds of formula (I): ##STR1## [in which: either (a) the dotted line ( ) is a single bond; A=is oxygen; and B is a group of formula (II): ##STR2## (in which m is 0 and n is 0 or 1) or (b) the dotted line ( ) is a double bond; A=is said group of formula (II) in which m is 1 and n is 0 or 1; and B is absent; and R.sup.1 is hydrogen, halogen, alkyl, alkenyl, alkynyl, optionally substituted benzyl or optionally substituted phenyl; R.sup.2 is hydrogen, halogen, alkyl, optionally substituted phenyl or heterocyclic; or R.sup.1 and R.sup.2, together with the carbon atoms to which they are attached, are a hydrocarbon ring fused to the isoxazole ring; R.sup.3 and R.sup.4 are each hydrogen, alkyl, optionally substituted benzyl or optionally substituted phenyl; or R.sup.3, R.sup.4 and the nitrogen atom to which they are attached together represent an alicyclic amino group]; and salts thereof may be used for the treatment of cerebral circulatory problems and for use as centrally acting muscle relaxants.Type: GrantFiled: March 4, 1993Date of Patent: June 14, 1994Assignee: Sankyo Company, LimitedInventors: Mitsuo Nagano, Junichi Sakai, Nobuyoshi Iwata, Kazuo Kobayashi, Masao Kozuka, Kenji Yoshimi, Katsunori Kato, Yoshiko Kubo, Toshiyuki Tonohiro, Takao Hara
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Patent number: 5262413Abstract: A method of treating depression comprising administering to a patient an effective amount of a compound of the formula (Ib): ##STR1## wherein R.sup.1b is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkenyl, C.sub.2 -C.sub.4 alkynyl, an unsubstituted benzyl group, a substituted benzyl having at least one substitutent (b) selected from the group consisting of C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkoxy, hydroxy, halogen, nitro, amino and C.sub.2 -C.sub.4 aliphatic carboxylic acylamino; unsubstituted phenyl or a substituted phenyl having at least one substitutent (b); R.sup.2b is hydrogen, C.sub.1 -C.sub.4 alkyl, unsubstituted phenyl, substituted phenyl having at least one substitutent (b), unsubstituted 5- or 6- membered heterocyclic having an oxygen, sulfur or nitrogen as a heteroatom, or substituted 5- or 6- membered heterocyclic having an oxygen, sulfur or nitrogen as a heteroatom and having at least one substitutent (b); and R.sup.3b and R.sup.Type: GrantFiled: January 29, 1993Date of Patent: November 16, 1993Assignee: Sankyo Company, LimitedInventors: Nobuyoshi Iwata, Kenji Yoshimi, Mitsuo Nagano
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Patent number: 5217970Abstract: A method of treating depression comprising administering to a patient an effective antidepressive amount of a compound of the formula ##STR1## wherein either (i) the endocyclic dotted line ( ) is a double bond; the exoxyclic dotted line ( ) is a single bond;A is ##STR2## m is 1; n is 0; R.sup.3 and R.sup.4 are hydrogen, C.sub.1 -C.sub.4 alkyl, benzyl or phenyl or R.sup.3, R.sup.4 and the nitrogen to which they are attached represent an alicyclic amino having 5 or 6 ring atoms, of which one ring atom is nitrogen and one ring atom is optionally an additional nitrogen, oxygen or sulfur heteroatom; R.sup.1 is hydrogen, halogen C.sub.1 -C.sub.4 alkyl C.sub.2 -C.sub.4 alkenyl, C.sub.2 -C.sub.4 alkynyl, benzyl or phenyl; and R.sup.2 is hydrogen, C.sub.1 -C.sub.4 alkyl phenyl or a 5- or 6- membered heterocyclic; or(ii) the endocyclic dotted line ( ) is a single bond; the exocyclic dotted line ( ) is a double bond;A is oxygen;B is ##STR3## m is 0; n is 1; R.sup.3, R.sup.Type: GrantFiled: March 24, 1992Date of Patent: June 8, 1993Assignee: Sankyo Company, LimitedInventors: Nobuyoshi Iwata, Kenji Yoshimi, Mitsuo Nagano
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Patent number: 5116839Abstract: A method of treating depression comprising administering to a patient an effective antidepressive amount of a compound of the formula (I) ##STR1## wherein the endocyclic dotted line ##STR2## is a single bond; the exocyclic dotted line ##STR3## is a double bond; A is oxygen; B is a group of the formula (II) ##STR4## wherein m is 0 and n is 0 or 1; R.sup.3, R.sup.4 and the nitrogen to which they are attached together represent an alicyclic amino having a total of 5 or 6 ring atoms, of which one ring atom is the nitrogen and one ring atom is optionally an additional heteroatom selected from the group consisting of nitrogen, oxygen and sulfur, the alicyclic amino being unsubstituted or, where there is an additional nitrogen heteroatom, the alicyclic amino having as a substituent a C.sub.1 -C.sub.3 alkyl on the additional nitrogen heteroatom; R.sup.1 is hydrogen or halogen; and R.sup.2 is an unsubstituted phenyl, a substituted phenyl having a substituent selected from the group consisting of C.sub.1-3 alkyl, C.Type: GrantFiled: June 13, 1990Date of Patent: May 26, 1992Assignee: Sankyo Company, LimitedInventors: Nobuyoshi Iwata, Kenji Yoshimi, Mitsuo Nagano