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| Number | Title | Issue Date |
| 7420065 | Hetero-polycyclic compounds, and coloring matters, pigments, dyes, color-changing material compositions, and color-changing films, made by using the compounds Provided are novel hetero-polycyclic compounds having a specific structure, color-changing material compositions comprising (A) a fluorescent coloring matter comprising at least one of the hetero-polycyclic compounds described above and (B) a binder material, color-... | 09/02/2008 |
| 7329654 | Heteroatom containing tetracyclic derivatives as selective estrogen receptor modulators The present invention is directed to novel heteroatom containing tetracyclic derivatives, pharmaceutical compositions containing them, their use in the treatment and/or prevention of disorders mediated by one or more estrogen receptors and processes for their prepar... | 02/12/2008 |
| 7125989 | Hetero diels-alder adducts of pentacene as soluble precursors of pentacene The present invention describes organic solvent-soluble Diels-Alder adducts of polycyclic aromatic compounds, such as, oligothiophene, perylene, benzo[ghi]perylene, coronene and polyacenes, with variety of dienophiles containing at least one heteroatom and in some c... | 10/24/2006 |
| 6930184 | Functional fluorescent dyes Fluorescent functional dyes represented by the following formulas: wherein R1 is hydrogen or methyl; R2, R3, R4, R5, and R6 are each independently selec... | 08/16/2005 |
| 6858732 | Photochromic benzodioxine fused naphthopyran compounds, compositions and articles containing those naphthopyran compounds Benzodioxino-naphtho[1,2-b]pyran compounds having particularly advantageous photochromic properties, such as, high sensitivity/coloration, two distinct absorption bands in the 430-500 nm range and 520-620 nm range of the visible spectrum may be generally described a... | 02/22/2005 |
| 6750346 | Stable near-infrared (NIR) marker dyes based on benzopyrylium-polymethines The disclosure is directed to so-called laser-compatible NIR marker dyes based on polymethines for use in optical, in particular, fluorescence optical determination and detection methods, for example, in the fields of medicine, pharmaceutics and in the areas of life... | 06/15/2004 |
| 6713636 | Thloxanthone dyes with improved solubility and a method of preparing 2-oxybenzanthrones as intermediate materials for making of these dyes The invention relates to new thioxanthone compounds having utility as fluorescent dyes and processes for their manufacture. ... | 03/30/2004 |
| 6696540 | Episulfide compound, method for producing the same and optical product comprising the same An episulfide compound useful as a starting material for optical materials that have a high refractive index and a high Abbe's number is provided. A method for producing the same and an optical product made with the same are also provided. The episulfide ... | 02/24/2004 |
| 6398987 | Naphthopyrans having a perfluoroalkyl substituent in position 5, preparation and compositions and matrices containing them The present invention relates to novel compounds of the naphthopyran type which have a perfluoroalkyl group (X) in position 5. These compounds are of formula (I) given below: ##STR1## These compounds (I) possess interesting photochromic properties. The ... | 06/04/2002 |
| 6384045 | Tricyclic and tetracyclic pyrones This invention provides cancer-active tricyclic and tetracyclic oxypyrones and a method of synthesizing these compounds. Preferred compounds have aryl groups at the 3-position of the oxypyrone ring. The tricyclic oxypyrone synthetic method is a simple con... | 05/07/2002 |
| 6313161 | 2,19-methyleneoxy and 2,19-methylenethio bridged steroids as aromatase, 19-hydroxylase inhibitors and methods of their use in the treatment of estrogen mediated disorders The present invention is directed to a method of using a certain compounds which are 2,19-methyleneoxy or 2,19 methylenethio bridged steroids, and related steroidal compounds as inhibitors of the enzyme steroid aromatase, 19-hydroxylase and as treatment f... | 11/06/2001 |
| 6281355 | Nitrogen-containing tetracyclic compounds A nitrogen-containing tetracyclic compound represented by the formula: ##STR1## wherein Y1 --Y2 --Y3 is N--C.dbd.N or a group represented by the formula: C.dbd.C--NR3 (wherein R3 is a hydrogen atom, a ... | 08/28/2001 |
| 6214865 | Macrocyclic analogs and methods of their use and preparation The invention provides halichondrin analogs having pharmaceutical activity, such as anticancer or antimitotic (mitosis-blocking) activity, and methods of identifying agents that induce a sustained mitotic block in a cell after transient exposure of the ce... | 04/10/2001 |
| 6162610 | Xanthan-ester and acridan substrates for horseradish peroxidase Xanthan esters and acridans are substrates for horseradish peroxidase. These stable, enzymatically cleavable chemiluminescent esters are substrates for horseradish peroxidase which, together with peroxide is among the extensively used enzyme in enzyme-lin... | 12/19/2000 |
| 6133288 | Pentacyclic compounds, intermediates, processes, compositions, and methods The present invention provides compounds of formula I and II: ##STR1## wherein X is --O--, --S--, or --NR5 --; Y is --O--, --S--, --CH2 --, --CH2 CH2 --, --CH.dbd.CH--, or --NR5 --; B is --CH2 | 10/17/2000 |
| 5998408 | Triterpene derivatives with immunosuppressant activity The compounds of Formula I ##STR1## are useful as immunosuppressive agents.... | 12/07/1999 |
| 5977351 | Benzpyrylium squarylium and croconylium dyes, and processes for their preparation and use Dyes comprising an inner salt of a compound of the formula: Q1 =Z-Q2 wherein: Q1 is a 4-(benz[b]-4H-pyrylium)methylidene, 4-(benz[b]-4H-thiopyrylium)methylidene or 4-(benz[b]-4H-selenopyrylium)methylidene grouping; Z is a 1,3-(... | 11/02/1999 |
| 5958970 | Tricyclic and tetracyclic pyrones This invention provides cancer-active tricyclic and tetracyclic oxypyrones and a method of synthesizing these compounds. Preferred compounds have aryl groups at the 3-position of the oxypyrone ring. The tricyclic oxyprone synthetic method is a simple cond... | 09/28/1999 |
| 5955493 | Thiamorphinans with neuroprotective activity The present invention relates to morphinan derivatives that are neuroprotective against excitatory amino acid (EAA) cytotoxicity. In particular, morphinan derivatives of the invention act as antagonists at the ionotropic NMDA (N-methyl-(D)-aspartic acid) ... | 09/21/1999 |
| 5783710 | Benzothioxanthene dyes, their preparation and their use The present invention relates to benzothioxanthene dyes of the formula I, ##STR1## in which R1 is SO3.crclbar. M.sym. or SO2 NR4 R5, R2 and R3 independentl... | 07/21/1998 |
| 5726186 | Pentacyclic compounds, intermediates, processes, compositions, and methods The present invention provides compounds of formula I: ##STR1## wherein X is --O-- or --S--, Y is --O--, --S--, --CH2 --, --CH2 CH2 --, --CH.dbd.CH--, or --NR5 --; R1, R2, and R3... | 03/10/1998 |
| 5645768 | Photochromic compounds A photochromic compound, in particular, for tinting optical elements made of a plastic material has reduced mobility in plastic material. The photochromic compound is a photochromic 2H-pyran and is distinguished by the aromatic residues being chemically r... | 07/08/1997 |
| 5623080 | Fluorone and pyronin Y derivatives A compound of the formula (I) or (II): ##STR1## where R1, R2, R5 and R6 are the same or different and represent a hydrogen atom or a halogen atom and R1 and R2 may combine to form a ri... | 04/22/1997 |
| 5604280 | Ring spiro [fluorene-[2H]-benzopyranes] and their use in ophthalmic optics The invention concerns photochromic compounds with general formula (I): ##STR1## where Ra, Rb and Rc represent hydrogen; alkyl, aryl, OR, SR, COR or COOR, where R represents hydrogen, alkyl or aryl, amino with formula... | 02/18/1997 |
| 5310909 | Photochromic compounds, a process for their preparation, and their use Compounds of the formula I ##STR1## in which X is O, S, SO, SO2 or NR13, R13 is, for example, methyl, and R1 to R12, independently of one another, are, for example, H, C1 -C12 | 05/10/1994 |
| 5280128 | Process for the preparation of benzothioxanthene dyestuffs The present invention relates to a process for the preparation of benzothioxanthene dyestuffs and cyclisation of 3-(2'-aminophenylthio)-benzanathrones wherein the diazotisation and cyclisation are carried out simultaneously in polar, aprotic solvent in ... | 01/18/1994 |
| 5225554 | Polyoxa tetracyclic compounds A process for synthesizing polyoxa tetracyclics which involves the ozonolysis of a single-ring-structure vinyl silane with resulting direct formation of the desired multiple ring material. The polyoxa tetracyclic compounds have the formula ##STR1## ... | 07/06/1993 |
| 5177218 | Photochromic benzothioxanthone oxides, process for their preparation and the use thereof Compounds of formula I or III or mixtures thereof ##STR1## wherein R is unsubstituted C6 -C14 aryl or C6 -C14 aryl which is substituted by C1 -C12 alkyl, C1 -C12 ... | 01/05/1993 |
| 5099037 | 2,19-methyleneoxy and 2,19-methylenethio bridged steroids as aromatase and 19-hydroxylase inhibitors The present invention is directed to a group of compounds which are 2,19-methylenoxy or 2,19-methylenethio bridged steroids, and related steroidal compounds. These compounds are useful as aromatase and 19-hydroxylase inhibitors.... | 03/24/1992 |
| 5071853 | Polycyclic amines useful as cerebrovascular agents A novel series of polycyclic amines, derivatives, methods of making the compounds, novel intermediates, compositions containing them, and methods for using them in the treatment and prevention of cerebrovascular disorders are disclosed.... | 12/10/1991 |
| 4826977 | Photochromic spiropyran compounds A series of novel photochromic spiropyrans are disclosed in which a spiro-adamantane group is introduced into the 2-position of the benzopyran or naphthopyran ring. The spiropyran compounds of the invention exhibit heliochromic properties, i.e. they color... | 05/02/1989 |
| 4797414 | Naphthothiophene derivatives and their use as respiratory enhancing agents Pharmaceutical preparations containing compounds of formula I ##STR1## wherein ring A is unsubstituted or substituted, R1 and R2, independently of one another, each represents hydrogen, lower alkyl, aryl or heteroaryl, or R... | 01/10/1989 |
| 4739062 | Method of producing paraquinones A new widely-applicable method has been found for synthesis of 9,10-anthraquinones and similar chemical compounds of wide use in industry and pharmacology, by reacting suitable aromatic substrates with activated dicarboxylic acids (more particularly dichl... | 04/19/1988 |
| 4565779 | Photochromic compounds and photosensitive compositions containing the compounds Novel photochromic compounds are disclosed, which compounds are represented by the general formula ##STR1## in which R1 represents an alkyl group having 1 to 20 carbon atoms, R2, R3, R4 and R5 in... | 01/21/1986 |
| 4503066 | Spiro-linked pyrrolidine-2,5-diones active as enzyme aldose reductase inhibitors The invention provides various medical compositions for use in treating or preventing certain of the side effects of diabetes or galactosemia. The active ingredients are selected from a series of novel aldose reductase inhibitory spiro-linked pyrrolidine-... | 03/05/1985 |
| 4377703 | Process for preparing benzoxanthene and benzothioxanthene dyestuffs Mixtures of isomers of benzoxanthene and benzothioxanthene dyestuffs of the formulae ##STR1## wherein X is oxygen or sulfur, R optionally substituted alkyl, acyl or arylsulfonyl, R1 and R2 are hydrogen or halogen, alkyl, aryl, ... | 03/22/1983 |
| 4312868 | Isothiochromans Isothiochromans are described. The compounds possess hypotensive and antipsychotic properties; methods and compositions using them are described.... | 01/26/1982 |
| 4082769 | Benzothioxanthenes Treating compounds of the formula ##STR1## in which the nuclei marked "A" and "B" can be substituted by halogen, lower alkyl, lower alkoxy or phenyl, with acid binding agents at elevated temperatures in polar organic solvents yields compounds of the ... | 04/04/1978 |
| 4075226 | Secondary antioxidants Decahydro-3,3,8,8-tetramethoxy-2,7-epithio-1,4-ethanonaphthalene-5,9-dione, decahydro-3,3,8,8-tetraethoxy-2,7-epithio-1,4-ethanonaphthalene-5,9-dione, decahydro-dispiro[1,3-dioxolane-2,3'-(2',7'-epithio-1',4'-ethanonaphthalen e)-8',2"-[1,3]dioxolane]-5',9'... | 02/21/1978 |
| 3978081 | 11H,12H-[1]benzopyrano[2,3-b][1]benzopyran-11,12-dione and derivatives Benzopyrano-benzopyranes and the sulfur analogs thereof, benzothiopyranobenzothiopyranes, useful as medicinal agents. Compositions of matter including 11H,12H-[1]benzopyrano[2,3-b][1]benzopyran-11,12-dione or 11H,12H-[1]benzothiopyrano[2,3-b][1]benzothiop... | 08/31/1976 |
