摘要:
The invention relates to quinazoline derivatives of formula (I), wherein m is an integer from 1 to 3; R1 represents halogeno or C1-3alkyl; X1 represents —O—; R2 is selected from one of the following three groups: 1) C1-5alkylR3 (wherein R3 is piperidinyl-4-yl which may bear one or two substituents selected from hydroxy, halogeno, C1-4alkyl, C1-4hydroxyalkyl and C1-4alkoxy; 2) C2-5alkenylR3 (wherein R3 is as defined hereinbefore); 3) C2-5alkynylR3 (wherein R3 is as defined hereinbefore); and wherein any alkyl, alkenyl or alkynyl group may bear one or more substituents selected from hydroxy, halogeno and amino; and salts thereof; processes for their preparation, pharmaceutical compositions containing a compound of formula (I) or a pharmaceutically acceptable salt thereof as active ingredient. The compounds of formula (I) and the pharmaceutically acceptable salts thereof inhibit the effects of VEGF, a property of value in the treatment of a number of disease states including cancer and rheumatoid arthritis.
摘要:
The present invention is concerned with aryl-isoxazol-4-yl-imidazo[1,5-a]pyridine derivatives of formula wherein: R1, R2, and R3 are as defined herein and pharmaceutically acceptable acid addition salts thereof. These compounds have high affinity and selectivity for GABA A α5 receptor binding sites. The invention also relates to methods for enhancing cognition and treating cognitive disorders like Alzheimer's disease.
摘要:
The present invention is concerned with aryl-isoxazol-4-yl-imidazole derivatives of formula I: wherein R1 to R6 are as defmed in the specification and pharmaceutically acceptable acid addition salts thereof. This class of compounds has high affinity and selectivity for GABA A α5 receptor binding sites and might be useful as cognitive enhancer or for the treatment of cognitive disorders like Alzheimer's disease.
摘要:
In a non-destructive test instrument, there is provided a time variable gain (TVG) amplifier wherein the gain of the amplifier is dynamically changed to optimize the amplitude of a flaw echo signal. The TVG digital memory for a given TVG curve specifies and controls not only the start gain value, and the end game value, but the gain rate of change slope as well to generate TVG curve line segments.
摘要:
An ultrasonic inspection system utilizes a tunable digital filter with 4× interpolation. The system is used for scanning objects to be tested and includes a transmit/receive device to generate a test signal and receive an echo signal. A signal processing circuit processes the echo signal with one or more digital to analog converters for converting an analog version of the echo signal to a digital echo signal in the form of streaming digital data which is stored in a memory. The data is stored at a first data rate and read out at the second, slower data rate. An averaging decimator receives and processes the data from the memory and supplies it to an IIR filter and subsequently to an FIR filter and ultimately to a box car filter to effect processing thereon which increases the perceived resolution of the data by a given factor, preferably by a factor of 4.
摘要:
A throttle valve (1) for an inlet of an internal combustion piston engine comprising an aperture (9) adapted to be variably opened and closed between a first fully opened configuration and a second near closed configuration. The aperture (9) is variably opened and closed by a plurality of coplanar plates (10) mounted about the periphery of the aperture and movable towards the central region of the aperture.
摘要:
The present invention relates to compounds of formula I wherein R1, R2, R3, R4, and R5 are as defined in the specification. Compounds of the invention are active on the GABAB receptor and are useful for treating a variety of CNS disorders, including anxiety, depression, epilepsy, schizophrenia, cognitive disorders, spasticity-and skeletal muscle rigidity, spinal cord injury, multiple sclerosis, amyotrophic lateral sclerosis, cerebral palsy, neuropathic pain and craving associated with cocaine and nicotine, psychosis, panic disorder, posttraumatic stress disorders and gastrointestinal disorders.
摘要:
The present invention is concerned with substituted imidazo[1,5-a][1,2,4]triazolo[1,5-d][1,4]benzodiazepine derivatives of the formula I wherein R1 is hydrogen, halogen, lower alkyl, lower alkyl substituted by halogen, lower alkoxy, lower alkoxy substituted by halogen, nitro, cycloalkyl, —O(CH2)mO(CH2)mOH or —C≡C—R′; R2 is hydrogen or methyl; R3 is lower alkyl, lower alkyl substituted by halogen, lower alkenyl, lower alkenyl substituted by halogen, lower alkynyl, —(CH2)n-cycloalkyl, —(CR′R″)m—CH3, phenyl that is unsubstituted or substituted by halogen, pyridinyl or thienyl each of which is unsubstituted or substituted by lower alkyl, —(CH2)n—NH-cycloalkyl, lower alkenyl-cycloalkyl, lower alkynyl-(CR′R″)mOH, or lower alkynyl-phenyl wherein the phenyl ring is unsubstituited or substituted by halogen, CF3, lower alkyl or lower alkoxy; R′ is hydrogen or lower alkyl; R″ is hydrogen, hydroxy or lower alkyl; n is 0, 1 or 2; m is 1, 2 or 3; and o is 1 or 2; and pharmaceutically acceptable acid addition salts thereof. This class of compounds have high affinity and selectivity for GABA A α5 receptor binding sites. Thus, the invention also relates to methods of enhancing cognition and treating cognitive disorders like Alzheimer's disease.
摘要:
The invention relates to halogen substituted imidazo[1,5-a][1,2,4]triazolo[1,5-d][1,4]benzodiazepine derivatives of formula I wherein R1, R2, R3, R4 and n are as defined in the specification and to pharmaceutically acceptable acid addition salts thereof. The compounds can be used as a cognitive enhancer or for the treatment of cognitive disorders, anxiety, Alzheimer's disease and schizophrenia.
摘要翻译:本发明涉及式I的卤素取代咪唑并[1,5-a] [1,2,4]三唑并[1,5-d] [1,4]苯并二氮杂衍生物,其中R 1, R 2,R 3,R 4和n如说明书中所定义及其药学上可接受的酸加成盐。 这些化合物可以用作认知增强剂或用于治疗认知障碍,焦虑,阿尔茨海默病和精神分裂症。
摘要:
This invention relates to N-acylamino aryl derivatives of the formula where R1R21, R22, R23, R24, R3, R4, R5, R6, R7, R8, R, and n are as defined herein and where X is —CHRO, —OCHR—, —CH2S—, —SCH2—, —CH2CH2—, —CH═CH— or —C≡C—. The compounds of the invention are selective monoamine oxidase B inhibitors, and they are therefore useful in the treatment of diseases mediated by monoamine oxidase B, for example, for the treatment of Alzheimer's disease or senile dementia.