The Tricyclo Ring System Consists Of The Lactone Ring, A Five-membered Carbocyclic Ring, And A Three-membered Carbocyclic Ring Patents (Class 549/301)
  • Patent number: 8114963
    Abstract: Fluorescent dye compounds of formula (I) are disclosed. These compounds are useful as they interact with organic compounds in a manner such that excitation with certain wavelengths of light results in fluorescent emission. Detection and/or monitoring of the fluorescence provides a means for the detection or quantification of organic compounds when bound to these fluorescent dye compounds. Formula (I), wherein: each of R, R? and R? is a hydrogen atom, halogen atom or a straight or branched C1-20 alkyl, alkenyl or alkynl group optionally substituted with one or more halogen, hydroxyl, and/or oxy group; rings A, B and C optionally include one or more double bonds; rings B and C are optionally substituted with one or more halogen atoms.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: February 14, 2012
    Assignee: Flurotechnics Pty Limited
    Inventors: Philip John Livingston Bell, Peter Karuso
  • Patent number: 6433004
    Abstract: The present invention relates to novel substituted &bgr;,&ggr;-fused lactones, to processes for their preparation and to their use for the prevention and/or treatment of disorders caused by hyper- or hypofunction of the glutamatergic system, in particular of cerebral ischaemias, craniocerebral trauma, states of pain or CNS-mediated spasms.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: August 13, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Stolle, Horst-Peter Antonicek, Stephen Lensky, Arnd Voerste, Thomas Müller, Jörg Baumgarten, Karsten von dem Bruch, Gerhard Müller, Udo Stropp, Ervin Horváth, Jean-Marie-Viktor de Vry, Rudy Schreiber
  • Patent number: 5219743
    Abstract: The primary hydroxy group of Corey lactone diols is optically selectively acylated to obtain the desired optically active ester and/or diol. The mixture of Corey lactone diols of formulae (Ia) and (Ib): ##STR1## is reacted with an acylating agent optically selectively in the presence of an enzyme and/or a microorganism thereby to acylate, isolate and purify the primary alcohol.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: June 15, 1993
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Seiichi Takano, Tsutomu Sugahara
  • Patent number: 4495342
    Abstract: A class of relatively low molecular-weight oligomers containing at least one isoimide group and terminal groups capable of undergoing an addition polymerization reaction are provided. These oligomers are characterized by excellent solubility in common solvents and a melting temperature considerably lower than their cure temperature, thus enabling the oligomers to be formed into cured polymers more slowly and at lower temperatures, all without the evolution of deleterious gases. The oligomers of the present invention may be formed by reacting an aromatic dianhydride with an aromatic diamine, followed by reaction with a monoanhydride. The resulting product is dehydrated to form the isoimide-containing oligomer.
    Type: Grant
    Filed: September 26, 1983
    Date of Patent: January 22, 1985
    Assignee: Hughes Aircraft Company
    Inventor: Abraham L. Landis
  • Patent number: 4485231
    Abstract: A class of relatively low molecular-weight oligomers containing at least one isoimide group and terminal groups capable of undergoing an addition polymerization reaction are provided. These oligomers are characterized by excellent solubility in common solvents and a melting temperature considerably lower than their cure temperature, thus enabling the oligomers to be formed into cured polymers more slowly and at lower temperatures, all without the evolution of deleterious gases. The oligomers of the present invention may be formed by reacting an aromatic dianhydride with an aromatic diamine, followed by reaction with a functional mono-amine. The resulting product is then dehydrated to form the isoimide-containing oligomer.
    Type: Grant
    Filed: September 26, 1983
    Date of Patent: November 27, 1984
    Assignee: Hughes Aircraft Company
    Inventor: Abraham L. Landis