Patents by Inventor Mingqiang Zhang

Mingqiang Zhang 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: 7026304
    Abstract: Disclosed are 2-alkylated-cyclodextrin derivatives and pharmaceutically acceptable salts thereof. The 2-alkylated-cyclodextrin derivatives are suitable for use in the reversal of drug-induced neuromuscular block.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: April 11, 2006
    Assignee: Akzo Nobel N.V.
    Inventors: Mingqiang Zhang, Gary Tarver
  • Patent number: 6949527
    Abstract: Disclosed is a 6-mercapto-cyclodextrin derivative having a general formula (I, ) wherein m is 0-7 and n is 1-8 and m+n=7 or 8; R is (C1-6) alkylene, optionally substituted with 1-3 OH groups, or (CH2)o-phenylene-CH2)p—; o and p are independently 0-4; X is COOH, CONHR3, NHCOR2, SO2OH, PO(OH)2, O(CH2—CH2—O)q—H, OH or tetrazol-5-yl: R2 is H or (C1-3)alkyl; R2 is carboxyphenyl; q is 1-3; or pharmaceutically acceptable salts thereof. The 6-mercaptocyclodextrin derivative is highly suitable for use in the reversal of drug-induced neuromuscular block.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: September 27, 2005
    Assignee: Akzo Nobel N.V.
    Inventors: Mingqiang Zhang, Ronald Palin, David Jonathan Bennett
  • Publication number: 20040171605
    Abstract: The present invention relates to benzoxazepine derivative having the general formula I, wherein X represents CO or SO2; R1, R2, R3 and R4 are independently selected from H, (C1-4)alkyl, (C1-4)alkyloxy, (C1-4)alkyloxy(C1-4)alkyl, halogen, nitro, cyano, NR8R9, NR8COR10, and CONR8R9, R5, R6 and R7 are independently H or (C1-4)alkyl; R8 and R9 are independently H or (C1-4)alkyl; or R8 and R9 form together with the nitrogen atom to which they are bound a 5- or 6-membered saturated heterocyclic ring, optionally containing a further heteroatom selected from O, S or NR11; R10 is (C1-4)alkyl; R11 is (C1-4)alkyl; A represents the residue of a 4-7 membered saturated heterocyclic ring, optionally containing an oxygen atom, the ring being optionally substituted with 1-3 substituents selected from (C1-4)alkyl, (C1-4)alkyloxy, hydroxy, halogen and oxo; or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: December 11, 2003
    Publication date: September 2, 2004
    Inventors: Simon James Anthony Grove, Mingqiang Zhang
  • Publication number: 20040048830
    Abstract: The invention relates to the use of sequestering agents for the preparation of a medicament for the treatment of hypercortisolaemia related disorders, especially for the treatment of major depression; to pharmaceutical compositions comprising a cortisol-sequestering agent, and to the cortisol-sequestering agent 6-per-deoxy-6-per-(2,3-dihydroxypropylthio)-&ggr;-cyclodextrin.
    Type: Application
    Filed: September 2, 2003
    Publication date: March 11, 2004
    Inventors: Mingqiang Zhang, David Robert Hill, David Rees
  • Patent number: 6136848
    Abstract: This invention relates to a flavone derivative represented by the formula (1) or a salt thereof, and also to a medicine containing the same. ##STR1## wherein A represents H, halogen, phenyl, naphthyl, a group of the formula (2) in which X is H or halogen, B is --CH.dbd.CH--, --CH.dbd.N--, --N(R.sup.7)-- (R.sup.7 : lower alkyl or alkoxyalkyl), --O-- or --S--; W represents a single bond, --CH.sub.2 O-- or --CH.dbd.CH--; at least one of R.sup.1 to R.sup.4 represents --COOH, --CN, alkyloxycarbonyl, tetrazolyl or --CONHR.sup.8 (R.sup.8 : H, lower alkyl or phenylsulfonyl), the remainder thereof individually represent H, halogen, --OH, lower alkyl or lower alkoxyl; R.sup.5 represents H, --OH, lower alkoxyl, --O(CH.sub.2).sub.m NR.sup.9 R.sup.10 (R.sup.9,R.sup.10 : H or lower alkyl, or coupled together with the adjacent N to form a phthalimido group; m: 1-5), or a group of the formula (3) (n: 1-5, l: 2-3; and R.sup.6 represents H, halogen, lower alkyl or lower alkoxyl.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: October 24, 2000
    Assignee: Kowa Co., Ltd.
    Inventors: Maria Elizabeth Zwaagstra, Mingqiang Zhang, Henk Timmerman, Masahiro Tamura, Yasushi Wada
  • Patent number: 6046212
    Abstract: This invention relates to chalcone derivatives represented by the following formula (1): wherein A represents a phenyl group, a quinolyl group or the like, W represents a vinylene group or the like, and R.sup.1 to R.sup.5 each independently represent a carboxyl, cyano, alkyloxycarbonyl or like group, or salts of the chalcone derivatives, and also to drugs containing them as effective ingredients. These compounds have excellent cys-LT receptor antagonism, and are useful as antiallergic agents or the like.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: April 4, 2000
    Assignee: Kowa Co., Ltd.
    Inventors: Maria Elizabeth Zwaagstra, Mingqiang Zhang, Henk Timmerman, Kazuhiro Onogi, Masahiro Tamura, Tsutomu Toma, Yasushi Wada
  • Patent number: 6011033
    Abstract: This invention relates to a phenylene derivative represented by the following formula (1) or a salt thereof and also to a medicine containing it as an effective ingredient. ##STR1## wherein R.sup.1 represents H or halogen; A represents --CH.dbd.CH--, --CH.dbd.N--, --N(R.sup.2)--, --O-- or --S--; W represents --CH.dbd.CH-- or --CH.sub.2 O--; X represents --CH.sub.2 O--, --CH.sub.2 S--, --CH.sub.2 N(R.sup.3)--, --CH.dbd.N--, --COO-- or --CONH--; Y represents ##STR2## B.sup.1 represents --C(R.sup.7)(R.sup.8)(CH.sub.2).sub.l --, --S(O).sub.m (CH.sub.2).sub.n -- or --CH.dbd.C(R.sup.9)--; B.sup.2 represents --CH.sub.2 CH.sub.2 -- or --CH.sub.2 CH.sub.2 CH.sub.2 --; Z.sup.1 and Z.sup.2 each represents O or S; etc. The phenylene derivative or salt thereof has antileukotrienic action and antihistaminic action and is useful as a medicine such as an asthma preventive or curative.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: January 4, 2000
    Assignee: Kowa Co., Ltd.
    Inventors: Henk Timmerman, Mingqiang Zhang, Kazuhiro Onogi, Masahiro Tamura, Tsutomu Toma, Yasushi Wada
  • Patent number: 5885987
    Abstract: This invention relates to a phenylene derivative represented by the following formula (1) or a salt thereof and also to a medicine containing it as an effective ingredient. ##STR1## wherein R.sup.1 represents H or halogen; A represents --CH.dbd.CH--, --CH.dbd.N--, --N(R.sup.2)--, --O-- or --S--; W represents --CH.dbd.CH-- or --CH.sub.2 O--; X represents --CH.sub.2 O--, --CH.sub.2 S--, --CH.sub.2 N(R.sup.3)--, --CH.dbd.N--, --COO-- or --CONH--; Y represents ##STR2## B.sup.1 represents --C(R.sup.7)(R.sup.8)(CH.sub.2).sub.l, --S(O).sub.m (CH.sub.2).sub.n -- or --CH.dbd.C(R.sup.9)--; B.sup.2 represents --CH.sub.2 CH.sub.2 -- or --CH.sub.2 CH.sub.2 CH.sub.2 --; Z.sup.1 and Z.sup.2 each represents O or S; etc. The phenylene derivative or salt thereof has antileukotrienic action and antihistaminic action and is useful as a medicine such as an asthma preventive or curative.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: March 23, 1999
    Assignee: Kowa Co., Ltd.
    Inventors: Henk Timmerman, Mingqiang Zhang, Kazuhiro Onogi, Masahiro Tamura, Tsutomu Toma, Yasushi Wada
  • Patent number: 5756518
    Abstract: This invention relates to a phenylene derivative represented by the following formula (1) or a salt thereof and also to a medicine containing it as an effective ingredient. ##STR1## wherein R.sup.1 represents H or halogen; A represents --CH.dbd.CH--, --CH.dbd.N--, --N(R.sup.2)--, --O-- or --S--; W represents --CH.dbd.CH-- or --CH.sub.2 O--; X represents --CH.sub.2 O--, --CH.sub.2 S--, --CH.sub.2 N(R.sup.3)--, --CH.dbd.N--, --COO-- or --CONH--; Y represents ##STR2## B.sup.1 represents --C(R.sup.7)(R.sup.8)(CH.sub.2).sub.l --, --S(O).sub.m (CH.sub.2).sub.n -- or --CH.dbd.C(R.sup.9)--; B.sup.2 represents --CH.sub.2 CH.sub.2 -- or --CH.sub.2 CH.sub.2 CH.sub.2 --; Z.sup.1 and Z.sup.2 each represents O or S; etc. The phenylene derivative or salt thereof has antileukotrienic action and antihistaminic action and is useful as a medicine such as an asthma preventive or curative.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: May 26, 1998
    Assignee: Kowa Co., Ltd.
    Inventors: Henk Timmerman, Mingqiang Zhang, Kazuhiro Onogi, Masahiro Tamura, Tsutomu Toma, Yasushi Wada
  • Patent number: 5714501
    Abstract: A piperidine derivative of formula (1) or salts thereof: ##STR1## wherein R.sup.1 and R.sup.2 independently represent H or together represent O, R.sup.3 represents H, --R.sup.5 --COOR.sup.6, or --COOR.sup.6 (wherein R.sup.5 is a lower alkylene group, --CONH--, or --CONHCH.sub.2, and R.sup.6 is H or a lower alkyl group), R.sup.4 represents H, an aralkyloxy carbonyl group, an aminomethyl carbonyl group, or an aralkyloxy carbonyl aminomethyl carbonyl group, A represents O or a double bond, and the broken line has the meaning that a bonding hand may be present; and preventive and therapeutic agents for allergies, antihistaminic agents, and antileucotriene agents comprising the derivative or salts as their effective component.The compound of formula (1) has excellent antihistaminic activities and antileukotriene activities, which are well balanced, and is useful as a drug for the prevention and treatment of allergies such as asthma, allergic rhinitis, allergic dermatosis and urticaria.
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: February 3, 1998
    Assignee: Kowa Co., Ltd.
    Inventors: Henk Timmerman, Mingqiang Zhang