...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7119201 | Triaryl-oxy-aryloxy-pyrimidine-2,4,6-trione metalloproteinase inhibitors The present invention relates to triaryl-oxy-aryloxy-pyrimidine-2,4,6-trione; metalloproteinase inhibitors of the formula wherein X, A, Y, B, G, W, and R1 are as defined in the specification, and to pharmace... | 10/10/2006 |
| 7105670 | Intermediates useful in the preparation of diaminothiazoles Disclosed are novel diaminothiazoles that are selective inhibitors of Cdk4. These compounds and their pharmaceutically acceptable salts and esters are anti-proliferative agents useful in the treatment or control of solid tumors, in particular breast, colon, lung and... | 09/12/2006 |
| 7074925 | N-substituted derivatives of 5-oxyiminobarbituric acid N-substituted derivatives of 5-oximinobarbituric add of the general formula where X is sulfur; R1 is selected from the group consisting of saturated or unsaturated alkyl, cycloalkyl, aryl and arylalkyl; and ... | 07/11/2006 |
| 6833372 | Non-peptide GnRH agents, Pharmaceutical compositions, and methods for their use Non-peptide GnRH agents that inhibit the effect of gonadotropin-releasing hormone are described. Such agents are useful for treating mammalian reproductive disorders and steroid hormone-dependent tumors as well as for regulating fertility, where suppression of gonad... | 12/21/2004 |
| 6756374 | Diaminothiazoles having antiproliferative activity Disclosed are novel diaminothiazoles of formula wherein R1, R2, R3, R4 and R5 are as herein disclosed. These compounds and their pharmaceutically acceptable salts an... | 06/29/2004 |
| 6713486 | Antiviral 2,4-pyrimidinedione derivatives and process for the preparation thereof 2,4-pyrimidinedione derivatives of formula (I) having high antiviral activity against wild-type and mutant HIV-1 and low toxicity are useful for treating AIDS (I) wherein: R1 is a C6-10 aryl or C3-10 heteroaryl group optionally havin... | 03/30/2004 |
| 6706723 | Pyrimidine-2,4,6-trione metalloproteinase inhibitors The present invention relates to pyrimidine-2,4,6-trione metalloproteinase inhibitors of the formula wherein X, Y, A, B and R1 are as defined in the specification, and to pharmaceutical compositions and method... | 03/16/2004 |
| 6562542 | Image-forming material and novel sulfonic acid ester derivative An image-forming material is described, comprising on an support an acid-generating agent selected from a sulfonic acid ester of a specific structure generating an acid by the action of heat and the polymer thereof, and a compound causing a light absorpti... | 05/13/2003 |
| 6518425 | Method of manufacture of 1,3-oxathiolane nucleosides Processes for the preparation of 1,3-oxathiolane nucleosides are provided that include efficient methods for the preparation of the 1,3-oxathiolane ring and subsequent condensation of the 1,3-oxathiolane with a pyrimidine or purine base. Using the process... | 02/11/2003 |
| 6444682 | Base analogues Nucleotide or base analogues having structure (3) or (4) ##STR1## wherein X.dbd.O or NH or S and each R6 is independently H or alkyl or alkenyl or alkoxy or aryl or a reporter moiety.... | 09/03/2002 |
| 6329379 | Hepatitis C inhibitor tri-peptides Racemates, diastereoisomers and optical isomers of a compound of formula (I): ##STR1## wherein B is H, a C6 or C10 aryl, C7-16 aralkyl; Het or (lower alkyl)-Het, all of which optionally substituted with C1-6 alk... | 12/11/2001 |
| 6254669 | Bleed reduction agents for ink printing inks A compound of the Formula (1) and salts thereof: ##STR1## wherein: Ar, Ar1, J, J1, X, X1 W, W1, L and m are as defined in the description. The compounds of Formula (1) are useful as additives in inks, especially... | 07/03/2001 |
| 6087498 | Process for the preparation of unsymmetrical 4,6-bis(aryloxy) pyrimidine compounds There is provided a process for the preparation of unsymmetrical 4,6-bis(aryloxy)pyrimidine compounds. The unsymmetrical 4,6-bis(aryloxy)pyrimidine compounds are useful as pesticidal agents.... | 07/11/2000 |
| 5922727 | Antiviral substituted pyrimidinedione homocarbocyclic nucleoside derivatives and methods for the preparation thereof and compositions containing the same as active ingredients The present invention relates to novel compound of general formula (I) and pharmaceutically acceptable salts thereof, and process for the preparation of such derivatives and to pharmaceutical compositions containing the same as active ingredients. ##... | 07/13/1999 |
| 5849910 | Process for the preparation of unsymmetrical 4,6-bis aryloxy-pyrimidine compounds This invention provides an improved process for the preparation of unsymmetrical 4,6-bis(aryloxy)pyrimidine compounds having the structural formula I ##STR1## The unsymmetrical 4,6-bis(aryloxy)pyrimidine compounds are useful as pesticidal agents... | 12/15/1998 |
| 5747500 | Antiviral 2, 4-pyrimidinedione derivatives Novel 2,4-pyrimidinedione compounds, and pharmaceutically acceptable salts thereof which possess good antiviral activities, and specifically represented by the following formula(I): ##STR1## wherein: R1 represents an unsubstituted or subst... | 05/05/1998 |
| 5656745 | Nucleotide analogs Nucleotide analogs characterized by the presence of an amidate linked amino acid or an ester linked group which is bonded to the phosphorus atom of phosphonate nucleotide analogs are disclosed. The analogs comprise a phosphoamidate or ester bond that is h... | 08/12/1997 |
| 5599770 | Herbicidal composition containing 2-benzyloxypyrimidine derivatives, processes for producing the derivatives and 2-benzyloxypyrimidine derivatives A herbicidal composition comprising a herbicidally effective amount of a 2-benzyloxypyrimidine derivative represented by the formula (I): ##STR1## wherein R1 and R2 are each independently H, a halogen, hydroxyl, C1 -C... | 02/04/1997 |
| 5478928 | 2',3'-dideoxy-4'-thioribonucleosides and synthetic precursors thereof 2',3'-dideoxy-4'-thioribonucleosides useful as antiviral agents in the treatment and prevention of AIDS are disclosed. In accordance with one aspect of the invention there are provided compounds of the formula ##STR1## where X.dbd.H, N3 or... | 12/26/1995 |
| 5420133 | Quinazolinones substituted with phenoxyphenylacetic acid derivatives Phenoxyphenylacetic acids and derivatives of general structural formula I ##STR1## have endothelin antagonist activity and are therefore useful in treating cardiovascular disorders, such as hypertension, postischemic renal failure, vasospasm, cerebra... | 05/30/1995 |
| 5360576 | Chiral alkenylaryl 2,3-epoxyalkyl ethers, and the use thereof in liquid-crystalline mixtures Compounds of the formula (I) in which the symbols have the following meanings: R1 is straight-chain or branched (C3 -C2)alkenyl containing a terminal double bond, it being possible for one or two non-adjacent CH2 | 11/01/1994 |
| 5284820 | Herbicidal substituted cycloalkenes Herbicidal substituted cycloalkenes of the formula ##STR1## in which A is a straight-chain or branched, optionally substituted alkanediyl group, X is O, S, N--R8 or CR9 R10, Y is O, S, NH or N-alkyl, Z is N or R11 | 02/08/1994 |
| 5270318 | Heterocyclic compounds A compounds of formula (I): ##STR1## wherein R1 and R2 are independently hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, alkylcycloalkyl, halogen, haloalkyl, alkoxy, alkenoxy, alkoxyalkyl, haloalkoxy, alkylthio, cyano, nitro, ami... | 12/14/1993 |
| 5262385 | Halogen-containing compounds, herbicidal composition containing the same as an active ingredient, and intermediary compounds therefor A compounds represented by the formula ##STR1## wherein X represents a fluorine atom, W represents an oxygen atom, sulfur atom or group --OCH2 --, Z1 and Z 2 each represent a nitrogen atom or group CH, but when Z1 | 11/16/1993 |
| 5262386 | Pyrimidinyl- and triazinyl-salicylamides and their use and preparation Pyrimidinyl- and triazinyl-salicylamides of the formula I ##STR1## in which the meanings of the radicals are described in claim 1, and the salts of compounds of the formula I which have a free hydroxycarbonyl group have a herbicidal and plant-growth ... | 11/16/1993 |
| 5246914 | Salicyloyl (thio)ether derivatives, their preparation and intermediates for their preparation Salicyloyl(thio)ether derivatives of the formula I, ##STR1## where is oxygen or sulfur and Z is carbon or nitrogen, and the radicals R1 to R4 and A have the meanings given in the disclosure, and processes and intermediates for p... | 09/21/1993 |
| 5246938 | Heterocyclic compounds Compounds of formula (I): ##STR1## wherein R1, R2 and R3 are independently hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, alkylcycloalkyl, halogen, haloalkyl, alkoxy, alkenoxy, alkoxyalkyl, haloalkoxy, alkylthio, cyan... | 09/21/1993 |
| 5232897 | Herbicidal pyrimidine compounds, compositions containing the same and method of use Herbicidal pyrimidine compound having the formula ##STR1## wherein the substitutents A, R1, R2, X, Y1, Y2, Y3 and Z are as defined herein below.... | 08/03/1993 |
| 5225550 | Process for the preparation of substituted acyclic nucleosides, and intermediates occurring therein It is possible, by using symmetrical formaldehyde acetals of the formula ##STR1## in which the substituents R1 -R3 have the specified meanings, advantageously to introduce the substituent ##STR2## into nitrogen-containing h... | 07/06/1993 |
| 5178663 | 3-alkoxyalkanoic acid derivative, process for preparing the same and herbicide using the same Disclosed is a 3-alkoxyalkanoic acid compound represented by the following formula (I): ##STR1## wherein R1 represents a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a cycloalkyl group, a halo-lower alkyl group or a ... | 01/12/1993 |
| 5139563 | Herbicidal compounds Compounds of formula I ##STR1## wherein A is nitrogen or a group CR5 ; each of R1, R2 and R5 is, independently, hydrogen, halogen, formyl, cyano, carboxy, azido or optionally substituted alkyl, alkenyl, alk... | 08/18/1992 |
| 5112835 | 6-substituted acyclopyrimidine nucleoside derivatives and antiviral agents containing the same as active ingredient thereof 6-substitutted acyclopyrimidine nucleoside derivatives represented by the following general formula I: ##STR1## wherein R1 represents a hydrogen or halogen atom or a group of alkyl, alkenyl, alkynyl, alkylcarbonyl, arylcarbonyl, arylcarbon... | 05/12/1992 |
| 4908379 | Nitrogen-containing heterocyclic compounds and compositions for controlling and/or preventing pests and blights (diseases) A nitrogen-containing heterocyclic compound of the following formula: ##STR1## wherein D represents --N.dbd. or ##STR2## E represents .dbd.N--, ##STR3## G represents --N.dbd., ##STR4## with proviso that when G represents --N.dbd. ... | 03/13/1990 |
| 4889552 | 2-Phenoxypyrimidine derivative and herbidical composition A 2-phenoxypyrimidine derivative having the formula: ##STR1## wherein R is a formyl group or --COOR1 wherein R1 is a hydrogen atom, a lower alkyl group, a 2-methylsulfonylethyl group, a diethoxypropyl group, a lower alkenyl grou... | 12/26/1989 |
| 4469696 | Substituted 2-amino-pyridine derivative compounds, their production and their medicinal use The invention relates to 4-,5-and 6-substituted 2-amino pyridines of Formula (I) and methods for their preparation. Also included in the invention are compositions containing said 2-amino pyridines of Formula (I) and the use of said compounds and composit... | 09/04/1984 |
| 4427437 | Use of 2-phenoxypyrimidines as herbicides A process of inhibiting the growth of, severely damaging, or killing plants which process comprises applying to the plant or to the growth medium thereof an effective amount of a composition comprising as active ingredient a compound of formula I: ##... | 01/24/1984 |
| 4412856 | Herbicidal heterocyclic and substituted phenyl phenylacetylene amines The novel compounds of the formula I are useful selective herbicides for postemergence application in crops of cereals, maize and rice. In formula I, ##STR1## A is an unsubstituted or substituted amino group, Q is a C2 -C6 alkyl... | 11/01/1983 |
| 4060525 | Five- or six-membered heterocyclic mono -and dialcohols New mono- or dialcohols of mononuclear, five-membered or six-membered, unsubstituted or substituted N-heterocyclic compounds which contain two NH-groups in the molecule, by reaction of mononuclear, five-membered or six-membered, unsubstituted or substitut... | 11/29/1977 |