Patents by Inventor Masahiro Neya
Masahiro Neya 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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Publication number: 20030134849Abstract: A compound of formula (I) in which R1 is halo, lower alkoxy, optionally substituted aryl, optionally substituted aryloxy, optionally substituted heterecyclic group or optionally substituted lower alkynyl, R2 is amidated carboxy, R3 is hydrogen or acyl, Ar is aryl or heterocyclic group, X is thia, sulfinyl or sulfonyl, Y and Z are each lower alkylene, m and n are each an integer of 0 to 2, and a salt thereof, useful as inhibitors of matrix metalloproteinases (MMP) or the production of tumor necrosis factor &agr; (TNF &agr;).Type: ApplicationFiled: August 19, 2002Publication date: July 17, 2003Inventors: Masahiro Neya, Hitoshi Yamazaki, Kazuhiko Ohne, Yuki Sawada, Tsuyoshi Mizutani, Yoshimasa Imamura, Noriko Mukai
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Publication number: 20030060473Abstract: A compound of formula (I) wherein A is a sulfonyl or a carbonyl; R1 is an optionally substituted aryl, an optionally substituted heterocyclic group, an optionally substituted lower alkyl or an optionally substituted lower alkenyl; R2 is a hydrogen, an optionally substituted lower alkyl, an optionally substituted aryl or an optionally substituted heterocyclic group; R3 is an optionally substituted lower alkyl, an optionally substituted lower alkoxy, an optionally substituted aryloxy, an optionally substituted lower alkenyl, an optionally substituted aryl, an optionally substituted heterocyclic group or an optionally substituted amino; R4 is a hydrogen, an optionally substituted lower alkyl, an optionally substituted aryl or an optionally substituted heterocyclic group; R5 is a hydrogen, an optionally substituted lower alkyl, an optionally substituted aryl or an optionally substituted heterocyclic group; and R10 is a hydroxy or a protected hydroxy, and a pharmaceutically acceptable salt thereof.Type: ApplicationFiled: October 3, 2002Publication date: March 27, 2003Applicant: FUJISAWA PHARMACEUTICAL CO., LTD.Inventors: Masahiro Neya, Hitoshi Yamazaki, Natsuko Kayakiri, Kentaro Sato, Teruo Oku
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Patent number: 6489324Abstract: A compound of formula (I) wherein A is a sulfonyl or a carbonyl; R1 is an optionally substituted aryl, an optionally substituted heterocyclic group, an optionally substituted lower alkyl or an optionally substituted lower alkenyl; R2 is a hydrogen, an optionally substituted lower alkyl, an optionally substituted aryl or an optionally substituted heterocyclic group; R3 is an optionally substituted lower alkyl, an optionally substituted lower alkoxy, an optionally substituted aryloxy, an optionally substituted lower alkenyl, an optionally substituted aryl, an optionally substituted heterocyclic group or an optionally substituted amino; R4 is a hydrogen, an optionally substituted lower alkyl, an optionally substituted aryl or an optionally substituted heterocyclic group; R5 is a hydrogen, an optionally substituted lower alkyl, an optionally substituted aryl or an optionally substituted heterocyclic group; and R10 is a hydroxy or a protected hydroxy, and a pharmaceutically acceptable salt thereof.Type: GrantFiled: October 22, 2001Date of Patent: December 3, 2002Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Masahiro Neya, Hitoshi Yamazaki, Natsuko Kayakiri, Kentaro Sato, Teruo Oku
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Publication number: 20020128270Abstract: A compound of formula (I) wherein A is a sulfonyl or a carbonyl; R 1 is an optionally substituted aryl, an optionally substituted heterocyclic group, an optionally substituted lower alkyl or an optionally substituted lower alkenyl; R 2 is a hydrogen, an optionally substituted lower alkyl, an optionally substituted aryl or an optionally substituted heterocyclic group; R 3 is an optionally substituted lower alkyl, an optionally substituted lower alkoxy, an optionally substituted aryloxy, an optionally substitued lower alkenyl, an optionally substituted aryl, an optionally substituted heterocyclic group or an optionally substitued amino, R 4 is a hydrogen, an optionally substituted lower alkyl, an optionally substituted aryl or an optionally substituted heterocyclic group, R 5 is a hydrogen, an optionally substituted lower alkyl, an optionally substituted aryl or an optionally substituted heterocyclic group; and R 10 is a hydroxy or a protected hydroxy, and a pharmaceutically acceptable salt thereof.Type: ApplicationFiled: October 22, 2001Publication date: September 12, 2002Applicant: FUJISAWA PHARMACEUTICAL CO., LTD.Inventors: Masahiro Neya, Hitoshi Yamazaki, Natsuko Kayakiri, Kentaro Sato, Teruo Oku
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Patent number: 6333324Abstract: A compound of formula (I) wherein A is a sulfonyl or a carbonyl; R1 is an optionally substituted aryl, an optionally substituted heterocyclic group, an optionally substituted lower alkyl or an optionally substituted lower alkenyl; R2 is a hydrogen, an optionally substituted lower alkyl, an optionally substituted aryl or an optionally substituted heterocyclic group; R3 is an optionally substituted lower alkyl, an optionally substituted lower alkoxy, an optionally substituted aryloxy, an optionally substitued lower alkenyl, an optionally substituted aryl, an optionally substituted heterocyclic group or an optionally substitued amino; R4 is a hydrogen, an optionally substituted lower alkyl, an optionally substituted aryl or an optionally substituted heterocyclic group; R5 is a hydrogen, an optionally substituted lower alkyl, an optionally substituted aryl or an optionally substituted heterocyclic group; and R10 is a hydroxy or a protected hydroxy, and a pharmaceutically acceptable salt thereof.Type: GrantFiled: July 26, 1999Date of Patent: December 25, 2001Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Masahiro Neya, Hitoshi Yamazaki, Natsuko Kayakiri, Kentaro Sato, Teruo Oku
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Patent number: 6207686Abstract: A compound of formula (I), in which: R1 is lower alkyl, cyclo(lower)alkyl, optionally substituted aryl, optionally substituted heterocyclic group, cyclo(lower)alkyl(lower)alkyl, or ar(lower)alkyl; R2 is hydrogen, hydroxy or protected hydroxy; R3 is lower alkyl, aryl, ar(lower)alkyl or optionally substituted heterocyclic(lower)alkyl; R4 is carboxy, protected carboxy or lower alkylsufonylcarbamoyl; R5 is hydrogen or lower alkyl; R6 is hydrogen or heterocyclic group; A is a single bond or lower alkylene, and Ar is optionally substituted aryl, or pharmaceutically acceptable salts thereof, having endothelin antagonistic activity.Type: GrantFiled: June 20, 1997Date of Patent: March 27, 2001Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Masahiro Neya, Tatsuya Zenkoh, Hitoshi Sawada, Chiyoshi Kasahara, Masayoshi Murata, Keiji Hemmi
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Patent number: 5888972Abstract: A compound of the formula: ##STR1## in which R.sup.4 is acyl,R.sup.5 is lower alkyl,R.sup.6 is optionally substituted ar(lower)alkyl or optionally substituted heterocyclic-(lower)alkyl,R.sup.7 is lower alkyl or lower alkylthio(lower)alkyl,R.sup.8 is carboxy or protected carboxy,A is lower alkylene,Z is a group of the formula: ##STR2## wherein R.sup.1 is hydrogen, lower alkyl, common amino-protective group or optionally substituted ar(lower)alkyl,R.sup.2 is hydrogen, lower alkyl, optionally substituted ar(lower)alkyl, optionally substituted heterocyclic-(lower)alkyl, optionally substituted cyclo(lower)alkyl(lower)alkyl, common amino-protective group, amino(or protected amino)(lower)alkyl, optionally substituted heterocyclic-carbonyl or cyclo(lower)alkyl, andR.sup.3 is optionally substituted heterocyclic(lower)alkyl, andm is an integer of 0 to 2,or pharmaceutically acceptable salts thereof, useful as endothelin antagonist.Type: GrantFiled: June 24, 1997Date of Patent: March 30, 1999Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Keiji Hemmi, deceased, Masahiro Neya, Naoki Fukami, Natsuko Kayakiri, Hirokazu Tanaka
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Patent number: 5656604Abstract: Peptide compounds of the formula (I') ##STR1## in which R.sup.1 is acyl,R.sup.2 is lower alkyl, cyclo(lower)alkyl(lower)alkyl or optionally substituted heterocyclic(lower)alkyl,R.sup.3 is optionally substituted heterocyclic(lower)alkyl or optionally substituted ar(lower)alkyl,R.sup.4 is lower alkyl, amino(lower)alkyl, protected amino(lower)alkyl, carboxy(lower)alkyl, protected carboxy(lower)alkyl or optionally substituted heterocyclic(lower)alkyl,R.sup.5 is carboxy, protected carboxy, carboxy(lower)alkyl or protected carboxy(lower)alkyl,R.sup.6 is hydrogen, lower alkyl, C.sub.6-10 ar(lower)alkyl amino(lower)alkyl, protected amino(lower)alkyl, carboxy(lower)alkyl, protected carboxy(lower)alkyl, or heterocyclic(lower)alkyl,R.sup.7 is hydrogen or lower alkyl, andA is --O--, --NH--, lower alkylimino or lower alkylene, or a pharmaceutically acceptable salt thereof are disclosed. The compounds can be used to treat and prevent endothelin mediated diseases such as hypertension.Type: GrantFiled: April 17, 1995Date of Patent: August 12, 1997Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Keiji Hemmi, Masahiro Neya, Naoki Fukami, Masashi Hashimoto, Hirokazu Tanaka, Natsuko Kayakiri
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Patent number: 5538950Abstract: A compound of the formula: ##STR1## in which R.sup.3 is hydrogen or lower alkyl, R.sup.4 is pyridyl (lower) alkyl; andR.sup.1, R.sup.2, R.sup.5 and A are defined in the description;or a pharmaceutically acceptable salt thereof, which have endothelin antagonistic activity.Type: GrantFiled: May 12, 1994Date of Patent: July 23, 1996Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Keiji Hemmi, Masahiro Neya, Naoki Fukami, Masashi Hashimoto, Hirokazu Tanaka, Natsuko Kayakiri
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Patent number: 5491132Abstract: This invention relates to new amino acid derivatives and pharmaceutically acceptable salts thereof, wherein the amino acid derivatives are useful in the treatment and/or prevention of hypertension, heart failure, renal diseases or glaucoma.Type: GrantFiled: February 28, 1994Date of Patent: February 13, 1996Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Keiji Hemmi, Masahiro Neya, Hiroshi Marusawa, Shinya Watanabe, Masashi Hashimoto
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Patent number: 5430022Abstract: Peptide compounds of the formula (I') ##STR1## in which R.sup.1 is acyl,R.sup.2 is lower alkyl, cyclo(lower)alkyl(lower)alkyl or optionally substituted heterocyclic(lower)alkyl,R.sup.3 is optionally substituted heterocyclic(lower)alkyl or optionally substituted ar(lower)alkyl,R.sup.4 is lower alkyl, amino(lower)alkyl, protected amino(lower)alkyl, carboxy(lower)alkyl, protected carboxy(lower)alkyl or optionally substituted heterocyclic(lower)alkyl,R.sup.5 is carboxy, protected carboxy, carboxy(lower)alkyl or protected carboxy(lower)alkyl,R.sup.6 is hydrogen, lower alkyl, C.sub.6-10 ar(lower)alkyl amino(lower)alkyl, protected amino(lower)alkyl, carboxy(lower)alkyl, protected carboxy(lower)alkyl, or heterocyclic(lower)alkyl,R.sup.7 is hydrogen or lower alkyl, andA is --O--, --NH--, lower alkylimino or lower alkylene, or a pharmaceutically acceptable salt thereof are disclosed. The compounds can be used to treat and prevent endothelin mediated diseases such as hypertension.Type: GrantFiled: July 6, 1993Date of Patent: July 4, 1995Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Keiji Hemmi, Masahiro Neya, Naoki Fukami, Masashi Hashimoto, Hirokazu Tanaka, Natsuko Kayakiri
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Patent number: 5284828Abstract: Novel peptides of the formula (I") ##STR1## in which R.sup.1 is hydrogen or acyl,R.sup.2.sub.c is lower alkyl,R.sup.3.sub.c is optionally N-substituted indolylmethyl,R.sup.4 is hydrogen, lower alkyl, C.sub.6-10 ar(lower)alkyl, amino(lower)alkyl, protected amino (lower)alkyl, carboxy(lower)alkyl, protected carboxy(lower)alkyl or optionally substituted heterocyclic (lower)alkyl,R.sup.5 is carboxy, protected carboxy, carboxy(lower)alkyl or protected carboxy(lower)alkyl,R.sup.7 is hydrogen or lower alkyl, andA is --O--, --NH--, lower alkylamino or lower alkylene,or a pharmaceutically acceptable salt thereof are disclosed.Additionally, the preparation of such peptides is described. The peptides are used to treat endothelin mediated diseases such as hypertension.Type: GrantFiled: May 7, 1991Date of Patent: February 8, 1994Assignee: Fujisawa Pharmaceutical Co. Ltd.Inventors: Keiji Hemmi, Masahiro Neya, Naoki Fukami, Masashi Hashimoto, Hirokazu Tanaka, Hatsuko Kayakiri
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Patent number: 5223489Abstract: A compound of the formula: ##STR1## wherein R.sup.1 is lower alkyl optionally substituted aryl; or amino optionally substituted; andR.sup.2 is hydrogen or lower alkyl; orR.sup.1 and R.sup.2 are taken together with the attached nitrogen atom to form a heterocyclic group optionally substituted;R.sup.3 is hydrogen or lower alkyl; andR.sup.Type: GrantFiled: January 30, 1992Date of Patent: June 29, 1993Assignee: Ujisawa Pharmaceutical Co., Ltd.Inventors: Keiji Hemmi, Masahiro Neya, Hiroshi Marusawa, Keisuke Imai, Natsuko Kayakiri, Masashi Hashimoto
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Patent number: 5142048Abstract: The invention relates to novel intermediate compounds for preparation of novel amino acid derivatives having renin inhibiting activity.Type: GrantFiled: January 8, 1990Date of Patent: August 25, 1992Assignee: Fujisawa Pharmaceutical Company, Ltd.Inventors: Keiji Hemmi, Masahiro Neya, Hiroshi Marusawa, Keisuke Imai, Natsuko Kayakiri, Masashi Hashimoto
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Patent number: 4963530Abstract: A compound of the formula: ##STR1## wherein R.sup.1 is aryl optionally substituted with a substituent selected from the group consisting of halogen and halo(lower)alkyl; lower alkyl or cyclo(lower)alkyl; andR.sup.2 is hydrogen or lower alkyl, orR.sup.1 and R.sup.2 are taken together with the attached nitrogen atom to form a heterocyclic group optionally substituted with a substituent selected from the group consisting of lower alkyl and esterified carboxy,R.sup.3 is hydrogen or lower alkyl, andR.sup.4 is lower alkyl,and its pharmaceutically acceptable salt, a process for the preparation thereof and pharmaceutical composition comprising the same.Type: GrantFiled: March 21, 1988Date of Patent: October 16, 1990Assignee: Fujisawa Pharmaceutical Company, Ltd.Inventors: Keiji Hemmi, Masahiro Neya, Keisuke Imai, Natsuko Kayakiri, Masashi Hashimoto
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Patent number: 4921855Abstract: A compound of the formula: ##STR1## wherein R.sup.1 is lower alkyl optionally substituted with a substituent selected from the group consisting of acyl, hydroxy, lower alkoxy, aryl, lower alkylthio and a group of the formula: ##STR2## in which R.sup.5 is hydrogen or acyl and R.sup.6 is hydrogen or lower alkyl; aryl; or amino optionally substituted with substituent(s) selected from the group consisting of lower alkyl and acyl; andR.sup.2 is hydrogen or lower alkyl; orR.sup.1 and R.sup.2 are taken together with the attached nitrogen atom to form a heterocyclic group optionally substituted with substituent(s) selected from the group consisting of lower alkyl, hydroxy(lower )alkyl, lower alkoxy(lower)alkyl, acyl(lower)alkyl, oxo and acyl;R.sup.3 is hydrogen or lower alkyl; andR.sup.4 is lower alkyl;and its pharmaceutically acceptable salt, processes for the preparation thereof and pharmaceutical composition comprising the same.Type: GrantFiled: June 9, 1988Date of Patent: May 1, 1990Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Keiji Hemmi, Masahiro Neya, Hiroshi Marusawa, Keisuke Imai, Natsuko Kayakiri, Masashi Hashimoto