Patents Assigned to Kaken Pharmaceuticals Co., Ltd
  • Patent number: 5013736
    Abstract: An azaazulene derivative having the general formula (I): ##STR1## wherein R.sup.1 is hydrogen atom or isopropyl group; the bond C N between C at the 2-position and N at the 1-position is single bond or double bond; when the bond C N is single bond, R.sup.2 is 5-tetrazolyl group, R.sup.3 is taken together with carbon atom to form carbonyl group at the 2-position, and R.sup.4 is hydrogen atom, an alkyl group having 1 to 18 carbon atoms, a lower alkenyl group, a lower alkyl group having oxygen atom or sulfur atom in carbon chain, a lower alkyl group having a halogen atom or cyano group, a lower alkyl group having heteroaromatic ring, a diphenyl lower alkyl group, or a lower alkyl group having hydrocarbon-aromatic ring with the general formula: ##STR2## in which W is single bond or carbonyl group, oxygen atom, sulfur atom or --CH.dbd.CH--, n is an integer of 1 to 6, and R.sup.1', R.sup.2' and R.sup.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: May 7, 1991
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Michiko Nagahara, Chikara Ieda, Mitsuo Mimura, Katsuhiro Uchida, Soichiro Sato, Makoto Okumura
  • Patent number: 4983751
    Abstract: Disclosed are novel oxazolidinedione derivatives expressed by the following formula: ##STR1## (R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 being defined in the specification), a method of producing the derivatives and herbicides containing the derivatives as an active ingredient. Carbonate esters which are intermediates in the method of producing the oxazolidinedione derivatives are also disclosed.These novel derivatives exhibit excellent weed-killing activity for harmful weeds and low phytotoxicity for crops.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: January 8, 1991
    Assignees: Sagami Chemical Research Center, Chisso Corporation, Kaken Pharmaceutical Co. Ltd.
    Inventors: Kenji Hirai, Takamasa Futikami, Atsuko Murata, Hiroaki Hirose, Masahiro Yokota, Shoin Nagato
  • Patent number: 4971985
    Abstract: A pyridylketoxime ether compound of the formula: ##STR1## wherein Ar is a phenyl, naphthyl, or heterocyclic group unsubstituted or substituted by a C.sub.1 -C.sub.8 alkyl group, a C.sub.1 -C.sub.8 alkylamino group, a C.sub.1 -C.sub.8 alkoxy group, a C.sub.1 -C.sub.8 alkoxycarbonyl group, a trifluoromethyl group, a nitro group or a halogen atom, X is a --(CH.sub.2).sub.m -- group wherein m is an integer of from 1 to 5, a --(CH.sub.2).sub.m --Y-- group wherein Y is an oxygen or sulfur atom and m is as defined above, or a --CH.sub.2 --(CH.dbd.CH).sub.n -- group wherein n is an integer of 1 or 2, and R is a phenyl, naphthyl, C.sub.3 -C.sub.8 cycloalkyl or heterocyclic group unsubstituted or substituted by a C.sub.1 -C.sub.8 alkyl group, a C.sub.1 -C.sub.8 alkylamino group, a C.sub.1 -C.sub.8 alkoxy group, a C.sub.1 -C.sub.8 akloxycarbonyl group, a trifluoromethyl group, a nitro group or a halogen atom, or a salt thereof.
    Type: Grant
    Filed: October 19, 1989
    Date of Patent: November 20, 1990
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Katsuyuki Otsuka, Nobuo Ishiyama, Makoto Watanabe, Kenji Seri, Kazuko Sanai, Kanji Muraoka
  • Patent number: 4902337
    Abstract: Novel hydantoin derivative which is represented by the formula: ##STR1## (wherein X and Y represent a halogen atom, R.sup.1 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group or an alkynyl group, R.sup.2 represents a hydrogen atom, an alkyl group, an alkenyl group or an alkynyl group, and R.sup.3 and R.sup.4 independently represent a hydrogen atom or a lower alkyl group), and a herbicide containing said derivative as effective ingredient.This hydantoin derivative exhibit excellent weed-killing activity for harmful weeds and low phytotoxicity for crop plants.
    Type: Grant
    Filed: September 2, 1987
    Date of Patent: February 20, 1990
    Assignees: Sagami Chemical Research, Kaken Pharmaceutical Co., Ltd., Chisso Corporation
    Inventors: Kenji Hirai, Takamasa Fuchikami, Atsuko Fujita, Hiroaki Hirose, Masahiro Yokota, Shoin Nagato
  • Patent number: 4883879
    Abstract: A cephalosporin compound having the formula: ##STR1## wherein R.sub.1 is a hydrogen atom, a halogen atom, a methoxy group, a substituted or unsubstituted vinyl group, or --CH.sub.2 --A wherein A is a hydrogen atom, an azido group, an acyloxy group, a carbamoyloxy group, a substituted or unsubstituted heterocyclic group (wherein the hetrocyclic ring is a 5- or 6-membered heterocyclic ring having from 1 to 4 oxygen, nitrogen or sulfur atoms), or a substituted or unsubstituted heterocyclic thio group (wherein the heterocyclic ring is a monocyclic or bicyclic heterocyclic ring having from 1 to 5 oxygen, nitrogen or sulfur atoms), or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: November 28, 1989
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Yoshiyuki Zama, Nobuo Ishiyama, Tsuneo Saita, Takanobu Naito, Masao Hirose, Masaaki Yokoyama, Taiji Asano, Hisato Senda, Keiji Sekine, Shigeru Sanai
  • Patent number: 4822786
    Abstract: A cephalosporin compound having the formula: ##STR1## wherein R.sub.1 is a hydrogen atom, a halogen atom, a methoxy group, a substituted or unsubstituted vinyl group, or --CH.sub.2 --A wherein A is a hydrogen atom, an azido group, an acyloxy group, a carbamoyloxy group, a subsituted or unsubstituted heterocyclic group (wherein the hetrocyclic ring is a 5- or 6-membered heterocyclic ring having from 1 to 4 oxygen, nitrogen or sulfur atoms), or a substituted or unsubstituted heterocyclic thio group (wherein the heterocyclic ring is a monocyclic or bicyclic heterocyclic ring having from 1 to 5 oxygen, nitrogen or sulfur atoms), or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: June 17, 1987
    Date of Patent: April 18, 1989
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Yoshiyuki Zama, Nobuo Ishiyama, Tsuneo Saita, Takanobu Naito, Masao Hirose, Masaaki Yokoyama, Taiji Asano, Hisato Senda, Keiji Sekine, Shigeru Sanai
  • Patent number: 4818272
    Abstract: Disclosed are novel oxazolidinedione derivatives expressed by the following formula: ##STR1## (R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 being defined in the specification), a method of producing the derivatives and herbicides containing the derivatives as an active ingredient.These novel derivatives exhibit excellent weed-killing activity for harmful weeds and low phytotoxicity for crops.
    Type: Grant
    Filed: June 11, 1987
    Date of Patent: April 4, 1989
    Assignees: Sagami Chemical Research Center, Chisso Corporation, Kaken Pharmaceutical Co. Ltd.
    Inventors: Kenji Hirai, Takamasa Futikami, Atsuko Murata, Hiroaki Hirose, Masahiro Yokota, Shoin Nagato
  • Patent number: 4778785
    Abstract: A pharmaceutical composition for retarding and reducing cachexia comprising, as an efficacious ingredient, at least one compound selected from the group consisting of benzaldehyde and 4,6-O-benzylidene-D-glucose, and a method for retarding and reducing cachexia in humans which comprises administering to an affected human at least one said compound.
    Type: Grant
    Filed: August 29, 1986
    Date of Patent: October 18, 1988
    Assignees: Kaken Pharmaceutical Co., Ltd., Rikagaku Kenkyusho
    Inventors: Mutsuyuki Kochi, Shinichiro Esumi, Setsuo Takeuchi
  • Patent number: 4777046
    Abstract: A sheet-like preparation comprising a composition comprising (a) a drug, (b) gelatin or agar, (c) gluten, (d) a carboxyvinyl polymer, (e) a polyhydriic alcohol, (f) a gum and (g) wax as its essential constituents, and water in an amount of 0 to 30 w/w % based on the total weight of the essential constituents, and a sheet-like support which supports thereon said composition.The sheet-like preparation of this invention is useful, for example, as a preparation for oral cavity administration.
    Type: Grant
    Filed: October 1, 1985
    Date of Patent: October 11, 1988
    Assignees: Nippon Kayaku Kabushiki Kaisha, Teikoku Seiyaku Kabushiki Kaisha, Kaken Pharmaceutical Co., Ltd.
    Inventors: Taiichiro Iwakura, Tadafumi Mizobuchi, Yukio Aouda
  • Patent number: 4767787
    Abstract: A sheet-shape adhesive preparation for promoting tooth-movement in orthodontics comprising a layer of a pharmaceutical composition containing as the active ingredient a prostaglandin (e.g. prostaglandin E.sub.1, prostaglandin E.sub.2, and prostaglandin F.sub.2.alpha.) in admixture with one or more high molecular weight compounds and a flexible base sheet, a process for the preparation thereof, and a method for promoting tooth-movement in orthodontics by applying the sheet-shape adhesive preparation to the mucous membrane of gingiva. Said preparation can be kept for a long period of time without being dissolved in saliva and without irritation or unpleasant feeling when applied to the mucous membrane of gingiva and hence can show the tooth-movement activity of the active prostaglandin for a long period of time.
    Type: Grant
    Filed: March 24, 1986
    Date of Patent: August 30, 1988
    Assignees: Kaken Pharmaceutical Co., Ltd., Teikoku Seiyaku Kabushiki Kaisha, Nippon Kayaku Kabushiki Kaisha
    Inventors: Terushige Kawata, Shinsuke Yamashita
  • Patent number: 4766148
    Abstract: Biphenylylpropionic acid derivatives of the formula: ##STR1## wherein R is an alkylcarbonyloxyalkyl group or an alkenylcarbonyloxyalkyl group having the formula: ##STR2## wherein R.sup.1 is a lower alkyl group having 1 to 5 carbon atoms and R.sup.2 is an alkyl group having 1 to 15 carbon atoms or an alkenyl group having 2 to 8 carbon atoms, or a lactone having the formula: ##STR3## wherein R.sup.3 and R.sup.4 are hydrogen atom or a lower alkyl group having 1 to 2 carbon atoms, and n is an integer of 1 or 2. The compounds have excellent anti-inflammatory, analgesic and antipyretic activities. Moreover, the compounds have no irritation, rapid and long-acting, and high safety margin.
    Type: Grant
    Filed: June 7, 1985
    Date of Patent: August 23, 1988
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Katsuhiro Uchida, Shozo Masumoto, Masao Tohno, Mitsuo Mimura, Makoto Okumura
  • Patent number: 4749392
    Abstract: A moisture absorbent is sealed between an elastic material and a moisture-permeable film to thereby provide a dehumidifying material having an elastic layer or bed therein. The dehumidifying material may be used in the fields of packing articles such as precision machines and dehydrated food and of dehumidification of beds, cushions, seat covers, lockers and the like.
    Type: Grant
    Filed: December 3, 1986
    Date of Patent: June 7, 1988
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Yoshio Aoki, Masatoshi Saito
  • Patent number: 4731375
    Abstract: A chromene derivative having the general formula (I): ##STR1## wherein n is 1 to 5 and --O--CH.sub.2).sub.n CO.sub.2 H group is attached to 5-position, 6-position, 7-position or 8-position, or salts thereof, a process for preparing the same and antiallergic agents containing the same.The compounds of the present invention inhibit the immunological release of chemical mediators such as SRS-A and histamine from mast cell and have an excellent effect in preventing and treating the various allergic diseases such as allergic asthma, allergic dermatitis, allergic nasitis, hives, allergic enteritis and allergic conjunctivitis, especially allergic asthma.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: March 15, 1988
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Jun Nakano, Toshikazu Awaji, Kiyoshi Kuriyama, Yoshiyuki Hiyama, Toshiaki Okuda
  • Patent number: 4699925
    Abstract: Biphenylylpropionic acid derivatives of the formula: ##STR1## wherein R is an alkylcarbonyloxyalkyl group or an alkenylcarbonyloxyalkyl group having the formula: ##STR2## wherein R.sup.1 is an alkyl group having 1 to 15 carbon atoms or an alkenyl group having 2 to 8 carbon atoms and m is 0 or an integer of 1. The compounds have excellent anti-inflammatory, analgesic and antipyretic activities. Moreover, the compounds have no irritation, rapid and long-acting, and high safety margin.
    Type: Grant
    Filed: September 12, 1983
    Date of Patent: October 13, 1987
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Katsuhiro Uchida, Shozo Masumoto, Masao Tohno, Mitsuo Mimura, Makoto Okumura, Kiyonoshin Ichikawa, Misako Matsumura
  • Patent number: 4691014
    Abstract: A cephalosporin compound having the formula: ##STR1## wherein R.sub.1 is a hydroxy group, a lower alkanoyloxy group or a lower alkoxycarbonyloxy group, R.sub.2 is a hydrogen atom, a hydroxy group, a lower alkanoyloxy group or a lower alkoxycarbonyloxy group, R.sub.3 is a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkenyl group, a lower alkoxy group or --CH.sub.2 R.sub.7 (wherein R.sub.7 is a hydrogen atom, an azido group, a lower alkanoyloxy group, a carbamoyloxy group, a substituted or unsubstituted pyridinium group or a substituted or unsubstituted heterocyclic thio group), R.sub.4 is a hydrogen atom or a carboxy-protecting group, each of R.sub.5 and R.sub.6 is a hydrogen atom or a lower alkyl group, or R.sub.5 and R.sub.6 form a cycloalkylidene group together with the carbon atom to which they are attached, and m is 0 to 1, or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: October 1, 1985
    Date of Patent: September 1, 1987
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Takanobu Naito, Masaaki Yokoyama, Kazuya Sasaki, Makoto Yamamoto, Kouji Amemiya
  • Patent number: 4666931
    Abstract: A benzofuran derivative having the general formula (I): ##STR1## wherein R.sup.1 is hydrogen atom, a benzyl group, unsubstituted or substituted with a halogen atom or an alkyloxy group, or an alkyl group having 1 to 3 carbon atoms, R.sup.2 is hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R.sup.3 is acetyl group, ethyl group, carboxyl group or 4-methyl-2,5-dioxoimidazolidine-4-yl group, R.sup.4 is hydrogen atom, hydroxyl group, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 9 carbon atoms, carboxymethoxy group, nitro group, acetoamino group, a benzylozy group unsubstituted or substituted with a halogen atom, nitro group or an alkyloxy group or a group having the formula: --OR.sup.6, wherein R.sup.6 is an alkenyl group having 2 to 4 carbon atoms or an alkyl group having 2 to 3 carbon atoms having a halogen atom, cyano group or oxo group, R.sup.5 is hydrogen atom or methylenedioxy group together with R.sup.
    Type: Grant
    Filed: December 27, 1985
    Date of Patent: May 19, 1987
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Yoshitaka Ohishi, Michiko Nagahara, Norio Kajikawa, Motoyuki Yajima, Katsumi Nogimori, Shigeki Kurokawa
  • Patent number: 4652566
    Abstract: A [2-hydroxy-3-(4-phenylpiperazinyl)propoxy]benzofuran derivative having the formula (I): ##STR1## wherein X is acetyl, carbamoyl, cyano, a lower alkoxycarbonyl, carboxyl or 1-hydroxyethyl group, R is hydrogen atom, a lower alkoxy group, a lower alkyl group or a halogen atom; R is attached to an arbitrary position of ortho-position, meta-position and para-position to N-phenyl group, and a group having the formula: ##STR2## is attached to an arbitrary position of 4, 5, 6 and 7 positions to benzofuran ring or the salt thereof, a process for preparing the same and an antihypertensive agent containing the same as an effective component. The benzofuran derivative has a strong .alpha.-adrenergic blockade effect and calcium antagonistic effect with a more decreased side-effect.
    Type: Grant
    Filed: March 19, 1985
    Date of Patent: March 24, 1987
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Jun Nakano, Michiko Nagahara, Mitsuo Hayashida, Yuji Suzuki, Yohichi Maruyama
  • Patent number: 4613588
    Abstract: Benzaldehyde and 4,6-O-benzylidene-D-glucose have been found to have analgesic activity. It is believed that this analgesic activity results from the inhibition of enkephalinase. Therefore benzaldehyde and 4,6-O-benzylidene-D-glucose are also useful for inhibiting enkephalinase in humans.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: September 23, 1986
    Assignee: Kaken Pharmaceutical Co. Ltd.
    Inventors: Takashi Katayama, Tadahiko Hazato
  • Patent number: 4613505
    Abstract: There is provided a fat emulsion of an ester of flurbiprofen having the formula ##STR1## wherein R is a group of the formula ##STR2## wherein R.sub.1 is a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group, R.sub.2 is a C.sub.1 -C.sub.15 alkyl group or a C.sub.2 -C.sub.8 alkenyl group, and m is zero or an integer of 1; or a lactone group of the formula ##STR3## wherein R.sub.3 and R.sub.4 are same as or different from each other and are a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group, and n is an integer of 1 or 2.The emulsion containing particles of a vegetable oil dissolving the ester can be orally or parenterally administered to human or animal for analgesia, antiphlogosis and antipyresis in various diseases and exhibits a high activity with small amounts in terms of flurbiprofen as compared with flurbiprofen itself.
    Type: Grant
    Filed: June 19, 1984
    Date of Patent: September 23, 1986
    Assignees: The Green Cross Corporation, Kaken Pharmaceutical Co., Ltd.
    Inventors: Yutaka Mizushima, Katsuhiro Uchida, Shozoh Masumoto, Masao Tohno, Yoshinobu Hashimoto, Kazumasa Yokoyama, Hiroyuki Okamoto, Kiichiro Nabeta, Tadakazu Suyama
  • Patent number: 4609736
    Abstract: A rhodanine derivative having the following general formula (I): ##STR1## wherein R is an acyclic alkyl group having 2 to 10 carbon atoms which may be substituted by a halogen atom or an acyclic alkenyl group having 2 to 19 carbon atoms which may be substituted by a halogen atom; or a nontoxic salt thereof. The rhodanine derivative has potent platelet aggregation inhibiting activity and aldose reductase inhibiting activity and therefore is useful as a therapeutic agent for diabetic complications.
    Type: Grant
    Filed: November 28, 1984
    Date of Patent: September 2, 1986
    Assignee: Kaken Pharmaceutical Co., Ltd.
    Inventors: Yoshitaka Ohishi, Michiko Nagahara, Yoshitaka Takehisa, Motoyuki Yajima, Shigeki Kurokawa, Norio Kajikawa, Akira Itoh