Patents by Inventor David J. Cavalla

David J. Cavalla 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).

  • Publication number: 20030073834
    Abstract: The present invention comprises compounds having the general formula I: 1
    Type: Application
    Filed: February 1, 2002
    Publication date: April 17, 2003
    Inventors: David J. Cavalla, Mark Chasin, Peter Hofer
  • Patent number: 6413975
    Abstract: Disclosed are compounds of the formula: wherein R3, R6a, R6b and R8 are substituted as disclosed herein. The compounds are effective in effecting PDE IV inhibition in patients in need thereof.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: July 2, 2002
    Assignee: Euro-Celtique, S.A.
    Inventors: Mark Chasin, David J. Cavalla, Peter Hofer, Andre Gehrig, Peter Wintergerst
  • Patent number: 6319928
    Abstract: A compound of the formula: wherein R2 is O or S; R3, R6a and R8 are the same or different and each represent a C1-8 alkyl which is unbranched or branched and unsubstituted or substituted with OH, alkoxy, CO2H, ═NOH, ═NOCONH2, or ═O; C3-8 cycloalkyl which is unsubstituted or substituted with OH, alkoxy, CO2H, ═NOH, ═NOCONH2, or ═O; C4-8 cycloalkylalkyl wherein the cycloalkyl portion is unsubstituted or substituted with OH, alkoxy, CO2H, ═NOH, ═NOCONH2, or ═O; aryl which is unsubstituted or substituted with Cl, NH2, alkylamino, dialkylamino, amido, C1-C8 alkylamido, C1-C3 dialkylamido, OH, alkoxy, HC═NOH, HC═NOCONH2, C1-C3 alkyl, phenyl or benzyl; aralkyl (C1-4); heterocyclyl; heterocyclylalkyl (C1-C4); and heteroaryl; R6b represents a H or R6a, or together R6b, N, and R6a make a 3 to 8 member ring containing at least one carbon, from one to three nitrogen atoms, from zero to two oxygen atoms, from zero to two sulfur atoms, said ring op
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: November 20, 2001
    Assignee: Euro-Celtique, S.A.
    Inventors: Mark Chasin, David J. Cavalla, Peter Hofer, Peter Wintergerst, Andre Gehrig
  • Patent number: 6294541
    Abstract: A compound of the formula: wherein R3 represent a C1-8 alkyl which is unbranched or branched and unsubstituted or substituted with OH, alkoxy, CO2H, ═NOH, ═NOCONH2, or ═O; C3-8 cycloalkyl which is unsubstituted or substituted with OH, alkoxy, CO2H, ═NOH, ═NOCONH2, or ═O; C4-8 cycloalkylalkyl wherein the cycloalkyl portion is unsubstituted or substituted with OH, alkoxy, CO2H, ═NOH, ═NOCONH2, or ═O; aryl which is unsubstituted or substituted with Cl, NH2, alkylamino, dialkylamino, amido, C1-C8 alkylamido, C1-C3 dialkylamido, OH, alkoxy, HC═NOH, HC═NOCONH2, C1-C3 alkyl, phenyl or benzyl; aralkyl (C1-4); heterocyclyl; heterocyclylalkyl (C1-C4); and heteroaryl; R8 represents H or a C1-8 alkyl which is unbranched or branched and unsubstituted or substituted with OH, alkoxy, CO2H, ═NOH, ═NOCONH2, or ═O; C3-8 cycloalkyl which is unsubstituted or substituted with OH, alkoxy, CO2H, ═NOH, ═NOCONH2, or ═O; C4-8 cyclo
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: September 25, 2001
    Assignee: Euro-Celtique S.A.
    Inventors: David J. Cavalla, Mark Chasin, Peter Hofer, Andre Gehrig, Peter Wintergerst
  • Patent number: 6248746
    Abstract: With the above and other objects in view, the present invention comprises compounds having the general formula (I): wherein: R1 is a C2-8 alkyl, C2-8 alkenyl, C2-8 alkynyl, C3-8 cycloalkyl, C3-8 cycloalkenyl or cycloalkynyl, wherein said alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl or cycloalkynyl is optionally substituted with hydroxy, C1-5 alkoxy, C3-5 cycloalkoxy, halogen, oxo, carbamido, hydroxycarbamido, oximido, C1-5 alkyloximido, C3-5 cycloalkyloximido, C1-5 acyloximido or C3-5 cycloacyloximido; Q is methylene or ethylene; R3 is aryl or heteroaryl wherein said aryl or heteroaryl has one to three substituents selected from the group consisting of C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, C3-6 cycloalkyl, C3-6 cycloalkenyl, cycloalkynyl, C3-5 alkylene, C3-5 cycloalkylene, haloC1-6 alkyl, haloC1-6 cycloalkyl, hydroxy, C1-5 alkoxy, C3-5 cycloalkoxy, C1-2 alkylenedioxy, C1-6 acyl, C3-6 cycloacyl, C1-6 acyloxy, C3-6 cycloacyloxy, halogen, nitro or cyano; R8 is C1-5 alkyl or C3-5 cycl
    Type: Grant
    Filed: January 7, 1999
    Date of Patent: June 19, 2001
    Assignee: Euro-Celtique S.A.
    Inventors: Mark Chasin, David J. Cavalla, Peter Hofer
  • Patent number: 6228859
    Abstract: Disclosed are compounds of the formula (I): wherein R3 is selected from the group consisting of C1-10 alkyl, C1-10 alkenyl, C3-10 cycloalkyl, C4-10 cycloalkylalkyl or C3-10 cycloalkenyl, wherein said alkyl, alkenyl, cycloalkyl, cycloalkylalkyl or cycloalkenyl is optionally substituted in one position with hydroxy; or benzyl, wherein said benzyl is optionally substituted in one or two positions with halogen, alkoxy, cycloalkoxy or polycycloalkyl, and wherein said alkyl moiety of said alkoxy or cycloalkoxy substituent is optionally substituted in one position with hydroxy; R8 is selected from the group consisting of hydrogen, C1-10 alkyl, C1-10 alkenyl, C3-10 cycloalkyl, C4-10 cycloalkylalkyl or C3-10 cycloalkenyl, wherein said alkyl, alkenyl, cycloalkyl, cycloalkylalkyl or cycloalkenyl is optionally substituted in one position with hydroxy; or benzyl, wherein said benzyl is optionally substituted in one or two positions with halogen, alkoxy, cycloalkoxy or polycycloalkyl, and wherein said a
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: May 8, 2001
    Assignee: Euro-Celtique S.A.
    Inventors: David J. Cavalla, Mark Chasin, Peter Hofer, Andre Gehrig, Peter Wintergerst
  • Patent number: 6211367
    Abstract: The present invention comprises compounds having the general formula I: wherein: Y, is N or CH Z is selected from the group consisting of alkyl groups such as alkylene groups such as CH2, CH2CH2, CH(CH3); alkenyl groups such as CH═CH; alkynyl groups such as C≡C; and NH, N(C1-C3 alkyl), O, S, C(O)CH2 and OCH2; R1 and R2 are selected from the group consisting of hydrogen and a C1-C8 straight or branched alkyl or a C3-C8 cycloalkyl; R3 is a C3-C12 straight or branched alkyl; R4 is a C3-C10 cycloalkyl optionally substituted with OH or C3-C10 cycloalkenyl optionally substituted with OH; and R8 is a C1-C8 straight or branched alkyl or a C3-C8 cycloalkyl, optionally substituted with OH; and methods of synthesis.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: April 3, 2001
    Assignee: Euro-Celtique, S.A.
    Inventors: David J. Cavalla, Mark Chasin, Peter Hofer
  • Patent number: 6166041
    Abstract: Novel compounds which are effective PDE IV inhibitors are disclosed. The present invention is directed to compounds having the general formula I ##STR1## wherein: X is a halogen;Q is --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --, a single or a double bond, or --NR.sub.1 --;R.sub.1 is a C.sub.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: December 26, 2000
    Assignee: Euro-Celtique, S.A.
    Inventors: David J. Cavalla, Mark Chasin, John W F Whitehead, Lesley Walton, Andrew C. Mansfield
  • Patent number: 6153630
    Abstract: Novel compounds which are effective PDE IV inhibitors are disclosed. The compounds possess improved PDE IV inhibition as compared to theophylline or rolipram as well as with improved selectivity with regard to PDE III inhibition. In certain aspects of the invention, the compounds also demonstrate PDE V inhibition. Pharmaceutical compositions containing the same and methods of treatment are also disclosed.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: November 28, 2000
    Assignee: Euro-Celtique, S.A.
    Inventors: David J. Cavalla, Mark Chasin, Lloyd Dolby
  • Patent number: 6057445
    Abstract: The present invention comprises methods of synthesizing compounds having the formula I: ##STR1## wherein: Y.sub.1, Z, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.8 are as described herein, which comprises the steps of(a) reacting a compound of the formula III ##STR2## with a base to cause cyclization to compound IV ##STR3## (b) transforming said hydroxy group of said compound IV to an amine by successive halogenation by a halogenating agent and displacement of the resultant halogen with an amide to form compound V ##STR4## (c) reacting said compound V with an effective amount of compound VI ##STR5## to form the compound of formula 1.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: May 2, 2000
    Assignee: Euro-Celtique S.A.
    Inventors: David J. Cavalla, Mark Chasin, Peter Hofer
  • Patent number: 6040447
    Abstract: The present invention comprises a method of synthesizing compounds having the formula (I): ##STR1## wherein: Z, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.8 are defined herein, which comprises the steps of(a) reacting a compound of the formula (II) ##STR2## wherein Q is a halogen, with an effective amount of a compound selected from the group consisting of an acid anhydride or an acid halide; to form a compound of the formula (III) ##STR3## b) transforming the 6-halo group of said compound (III) to an amine by displacement with ammonia to form compound (IV) ##STR4## (c) reacting said compound (IV) with a base to cause cyclization to a 6-halo intermediate, said 6-halo group is then transformed to an amine by displacement with an amine to form compound (V) ##STR5## (d) reacting said compound (V) with an effective amount of compound (VI) ##STR6## wherein X is a halogen; to form the compound of formula (I).
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: March 21, 2000
    Assignee: Euro-Celtique S.A.
    Inventors: David J. Cavalla, Mark Chasin, Peter Hofer
  • Patent number: 6037470
    Abstract: The present invention comprises a method of synthesizing compounds of formula (I): wherein Z, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.8 are as described herein; comprising the steps of.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: March 14, 2000
    Assignee: Euro-Celtique S.A.
    Inventors: David J. Cavalla, Mark Chasin, Peter Hofer
  • Patent number: 5591776
    Abstract: Rolipram-based PDE IV inhibitors containing phenyl- or benzyl-substituted moieties of the formula: ##STR1## wherein X.sub.1 and X.sub.2 may be the same or different and each is O or S;R.sub.1 is selected from the group consisting of hydrogen, saturated or unsaturated straight-chain or branched C.sub.2-12 alkyl groups, cycloalkyl and cycloalkyl-alkyl groups containing from 3 to 10 carbon atoms in the cycloalkyl moiety;R.sub.2 =R.sub.1 or --CH.sub.3 ;R.sub.3 is hydrogen, halogen, or a saturated or unsaturated straight-chain or branched C.sub.1-12 alkyl group, a cycloalkyl or cycloalkyl-alkyl groups containing from 3 to 7 carbon atoms in the cycloalkyl moiety;Z is a linkage selected from --CH.sub.2 CONH-- or --CH.sub.2 NHCO--, andR.sub.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: January 7, 1997
    Assignee: Euro-Celtique, S.A.
    Inventors: David J. Cavalla, Lloyd J. Dolby, Mark Chasin
  • Patent number: 5114950
    Abstract: The invention provides amide derivatives of the general formula (I) ##STR1## wherein R.sup.1 is a hydrogen atom or a C.sub.1-6 alkyl group; Y represents a group --(CH.sub.2).sub.m --, where m represents 2, 3 or 4 or a group --X(CH.sub.2).sub.p, where p represents 2 or 3, X represents an oxygen or a sulphur atom or a group NR.sup.5, where R.sup.5 is a C.sub.1-6 alkyl group, and X is attached to the benzene ring moiety of the molecule; and Im represents an imidazolyl group of the formula: ##STR2## wherein one of the groups represented by R.sup.2, R.sup.3 and R.sup.4 is a hydrogen atom or a C.sub.1-6 alkyl, C.sub.3-7 cycloalkyl, C.sub.3-6 alkenyl, phenyl or phenylC.sub.1-3 alkyl group, and each of the other two groups, which may be the same or different, represents a hydrogen atom or a C.sub.1-6 alkyl group; and physiologically acceptable salts and solvates thereof.The compounds of formula (I) are potent and selective antagonists of 5-hydroxytryptamine at 5-HT.sub.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: May 19, 1992
    Assignee: Glaxo Group Limited
    Inventors: Alexander W. Oxford, David E. Bays, David J. Cavalla, Peter C. North
  • Patent number: 5084474
    Abstract: The present invention provides ketones of the general formula (I): ##STR1## and physiologically acceptable salts and solvates thereof, wherein R.sup.1 and R.sup.2, which may be the same or different, each represents a hydrogen atom or a C.sub.1-6 alkyl group; Im represents an imidazolyl group of formula: ##STR2## wherein one of the groups represented by R.sup.3, R.sup.4 and R.sup.5 is a hydrogen atom or a C.sub.1-6 alkyl, C.sub.3-7 cycloalkyl, C.sub.3-6 alkenyl, phenyl or phenylC.sub.1-3 alkyl group, and each of the other two groups, which may be the same or different, represents a hydrogen atom or a C.sub.1-6 alkyl group; andA is a group of the formula (a), (b), (c), (d), (e), (f) or (g) as set forth hereinafter,and when A is the group (g), the group --COCR.sup.1 R.sup.2 CH.sub.2 Im is attached at the 2- or 4- position of the indole moiety.The compounds are potent and selective antagonists of the effect of 5-HT at 5-HT.sub.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: January 28, 1992
    Assignee: Glaxo Group Limited
    Inventors: Alexander W. Oxford, David J. Cavalla, Peter C. North
  • Patent number: 5026696
    Abstract: The invention relates to compounds of the general formula (I): ##STR1## wherein R.sup.1 and R.sup.2 together form a C.sub.3-5 alkylene chain and R.sup.3 is a hydrogen atom; orR.sup.1 and R.sup.3 together form a C.sub.2-4 alkylene chain and R.sup.2 is a hydrogen atom;A-B represents the group R.sup.4 R.sup.5 C--CH.sub.2 or R.sup.4 C.dbd.CH;R.sup.4 and R.sup.5, which may be the same or different, each represent a hydrogen atom or a C.sub.1-6 alkyl group; andIm represents an imidazolyl group of formula: ##STR2## wherein one of the groups represented by R.sup.6, R.sup.7 and R.sup.8 is a hydrogen atom or a C.sub.1-6 alkyl, C.sub.3-7 cycloalkyl, C.sub.3-6 alkenyl, phenyl or phenylC.sub.1-3 alkyl group and each of the other two groups, which may be the same or different, represents a hydrogen atom or a C.sub.1-6 alkyl group; and physiologically acceptable salts and solvates thereof.The compounds are potent and selective antagonists of the effect of 5-HT at 5-HT.sub.
    Type: Grant
    Filed: July 18, 1990
    Date of Patent: June 25, 1991
    Assignee: Glaxo Group Limited
    Inventors: Peter C. North, Alexander W. Oxford, David J. Cavalla
  • Patent number: 5026722
    Abstract: The invention relates to indole derivatives of the general formula (I) ##STR1## wherein Im represents an imidazolyl group of the formula: ##STR2## and R.sup.1 represents a hydrogen atom or a group selected from C.sub.1-6 alkyl, C.sub.3-6 alkenyl, C.sub.3-10 alkynyl, C.sub.3-7 cycloalkyl, C.sub.3-7 cycloalkylC.sub.1-4 alkyl, phenyl or phenylC.sub.1-3 alkyl;R.sup.2 represents a hydrogen atom or a group selected from C.sub.1-6 alkyl, C.sub.3-6 alkenyl, C.sub.3-7 cycloalkyl, phenyl or phenylC.sub.1-3 alkyl;X represents an oxygen atom or the group NR.sup.3 (where R.sup.3 represents a hydrogen atom or a C.sub.1-6 alkyl group);one of the groups represented by R.sup.4, R.sup.5 and R.sup.6 is a hydrogen atom or a C.sub.1-6 alkyl, C.sub.3-7 cycloalkyl, C.sub.3-6 alkenyl, phenyl or phenylC.sub.1-3 alkyl group, and each of the other two groups, which may be the same or different, represents a hydrogen atom or a C.sub.1-6 alkyl group;Q represents a hydrogen or a halogen atom, or a hydroxy, C.sub.1-4 alkoxy, phenylC.sub.
    Type: Grant
    Filed: June 15, 1989
    Date of Patent: June 25, 1991
    Assignee: Glaxo Group Limited
    Inventors: Alexander W. Oxford, Peter C. North, David J. Cavalla
  • Patent number: 5006544
    Abstract: The invention provides imidazole derivatives of the general formula (I) ##STR1## wherein Im representes an imidazolyl group of the formula: ##STR2## and one of the groups represented by R.sup.3, R.sup.4 and R.sup.5 is a hydrogen atom, or a C.sub.1-6 alkyl, C.sub.3-7 cycoalkyl, C.sub.3-6 alkenyl, phenyl or phenylC.sub.1-3 alkyl group, and each of the other two groups, which may be the same or different, represents a hydrogen atom or a C.sub.1-6 alkyl group;R.sup.1 and R.sup.2 each represent a hydrogen atom, or together with the carbon atoms to which they are attached form a phenyl ring;X represents an oxygen or a sulphur atom, or a group NR.sup.6, wherein R.sup.6 represents a C.sub.1-6 alkyl group;Z--Y represents the group CH--CH.sub.2 or C.dbd.CH;and physiologically acceptable salts and solvates thereof.The compounds of formula (I) are potent and selective antagonists of 5-hydroxytryptamine at 5-HT.sub.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: April 9, 1991
    Assignee: Glaxo Group Limited
    Inventors: Peter C. North, David J. Cavalla, Derek J. M. Black
  • Patent number: 4963546
    Abstract: The invention relates to compounds of the general formula (I): ##STR1## wherein R.sup.1 and R.sup.2 together form a C.sub.3-5 alkylene chain and R.sup.3 is a hydrogen atom; orR.sup.1 and R.sup.3 together form a C.sub.2-4 alkylene chain and R.sup.2 is a hydrogen atom;A-B represents the group R.sup.4 R.sup.5 C--CH.sub.2 or R.sup.4 C.dbd.CH;R.sup.4 and R.sup.5, which may be the same or different, each represent a hydrogen atom or a C.sub.1-6 alkyl group; andIm represents an imidazolyl group of formula: ##STR2## wherein one of the groups represented by R.sup.6, R.sup.7 and R.sup.8 is a hydrogen atom or a C.sub.1-6 alkyl, C.sub.3-7 cycloalkyl, C.sub.3-6 alkenyl, phenyl or phenylC.sub.1-3 alkyl group and each of the other two groups, which may be the same or different, represents a hydrogen atom or a C.sub.1-6 alkyl group;and physiologically acceptable salts and solvates thereof.The compounds are potent and selective antagonists of the effect of 5-HT at 5-HT.sub.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: October 16, 1990
    Assignee: Glaxo Group Limited
    Inventors: Peter C. North, Alexander W. Oxford, David J. Cavalla, David E. Bays
  • Patent number: 4950681
    Abstract: The invention relates to ketones of the general formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a group selected from C.sub.1-6 alkyl, C.sub.3-6 alkenyl, C.sub.3-10 alkynyl, C.sub.3-7 cycloalkyl, C.sub.3-7 cycloalkylC.sub.1-4 alkyl, phenyl, phenylC.sub.1-3 alkyl, --CO.sub.2 R.sup.8, --COR.sup.8, --CONR.sup.8 R.sup.9 or --SO.sub.2 R.sup.8 (wherein R.sup.8 and R.sup.9, which may be the same or different, each represents a hydrogen atom, a C.sub.1-6 alkyl or C.sub.3-7 cycloalkyl group, or a phenyl or phenylC.sub.1-4 alkyl group, in which the phenyl group is optionally substituted by one or more C.sub.1-4 -alkyl, C.sub.1-4 alkoxy or hydroxy groups or halogen atoms, with the proviso that R.sup.8 does not represent a hydrogen atom when R.sup.1 represents a group --CO.sub.2 R.sup.8 or --SO.sub.2 R.sup.8);R.sup.2 represents a hydrogen atom or a C.sub.1-6 alkyl, C.sub.3-6 alkenyl, C.sub.3-7 cycloalkyl, phenyl or phenylC.sub.1-3 alkyl group;R.sup.3 and R.sup.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: August 21, 1990
    Assignee: Glaxo Group Limited
    Inventors: David J. Cavalla, William L. Mitchell