摘要:
Compounds of the formula (I) are disclosed which are FabI inhibitors and are useful in the treatment bacterial infections: wherein: R1 is Ar or Het; R2 is H, C1-6alkyl or Ar—C0-6alkyl; X is H, C1-4alkyl, OR′, SR′, C1-4alkylsulfonyl, C1-4alkylsulfoxyl, CN, N(R′)2, CH2N(R′)2, NO2, CF3, CO2R′, CON(R′)2, COR′, NR′C(O)R′, F, Cl, Br, I, or CF3S(O)r—; R′ is H, C1-6alkyl or Ar—C0-6alkyl; and r is 0, 1 or 2; or a pharmaceutically acceptable salt thereof.
摘要:
Compounds of the formula (I) are disclosed which are vitronectin receptor antagonists and are useful in the treatment of osteoporosis: or a pharmaceutically acceptable salt thereof.
摘要:
The present invention relates to 5H-[1,2]benzisothiazolo[2,3-a]quinoline-5-ones, pharmaceutical compositions thereof and to methods of using these compounds for the treatment of inflammatory disorders.
摘要:
A heart pump having a housing with a central longitudinal axis, inlet means and an outlet means is disclosed. A stationary shaft extends axially within the housing and the means are provided for supporting the shaft centrally located within the housing. A stator assembly is mounted about the stationary shaft and a shell assembly is rotatable about the stator assembly and shaft. The shell assembly is located between the housing and stator assembly and includes a spiral ridge located on the outerside thereof for pumping blood through the housing between the housing and shell assembly as the shell assembly rotates. Rotor laminations are located on an innerside of the shell assembly. The rotor laminations have a plurality of axially extending permanent magnets therebetween which are circumferentially spaced about the stationary shaft. A damper winding means is mounted within the rotor laminations. Blood may flow between the shell assembly and housing without exposure to magnetic fields.
摘要:
A die assembly (10) for controlling extrudate profile dimension. The die assembly includes a die block (12) having a feed passage (16) for movably supporting a diverter member (13) within the die block, and first and second die block passages (18, 20). The diverter member (13) includes a diverter passage (32) and first and second feed openings (34, 36) interconnected by the diverter passage. One of the first or second feed openings (34, 36) has a larger diameter than the other of the first or second feed openings. The diverter member (13) is movable with respect to the die block (12) for directing extrudate flow via the diverter passage (32) through the second die block passage (20), to thereby vary the profile dimension of the extrudate exiting the die block. The die block (12) additionally includes a disposal passage (22). Movement of the diverter member (13) within the die block is provided between a first position providing communication between the first and second die block passages ( 18, 20), and a second position providing communication between the first die block passage (18) and the disposal passage (22). A die plate (14) may be readily changed by directing extrudate flow via the disposal passage (22).
摘要:
An improved process for dehydrating dialkyl 2,6-bis(trifluoromethyl)-2,6-dihydroxy-4-(alkyl)-3,5-piperidinedicarboxylates using concentrated sulfuric acid essentially in the absence of a solvent to prepare the corresponding dialkyl 2,6-bis(trifluoromethyl)dihydro-4-(alkyl)-3,5-pyridinedicarboxylates.
摘要:
The presence, size and location of a crack in a shaft is determined by comparing actual measured natural frequencies of the operating shaft system with the results of an analytical model. From a multi-station analytical model of an uncracked operating shaft system, natural frequencies and associated mode shapes are derived. A suspected axial location of a crack is defined, and a natural frequency of interest is selected which has an associated mode shape exhibiting significant localized bending at the suspected axial location of the crack and at a site of response measurement. The analytical model is modified to include a representation of an asymmetric crack at the suspected crack location. A predicted split and downward shift of a lateral natural frequency of interest as a function of crack depth and/or a predicted downward shift of a torsional natural frequency of interest as a function of crack depth is calculated from the modified model. The actual shaft system is subjected to an operating force excitation, and vibrational response measurements are taken with strain gages and then output through a short range telemetry system. A fast Fourier transform analyzer derives frequency response spectra from the measurements which indicate the actual natural frequencies of the shaft system. A comparison of actual natural frequency(s) in the region near the natural frequency of interest with frequency values predicted by the modified model is employed to determine the presence and severity of a crack in the shaft.
摘要:
A process for the preparation of an N-substituted aminomethylphosphonic acid comprising reacting a 2,5-diketopiperazine compound with phosphorous acid and formaldehyde in an acidic medium.
摘要:
The novel compound 1,4-diisopropyl-2,5-diketopiperazine can be hydrolytically cleaved to prepare N-isopropylglycine, which can be reacted with formaldehyde and prosphorous acid to produce N-isopropyl-N-phosphonomethylglycine. The latter compound can be dealkylated in the presence of base to produce N-phosphonomethylglycine, a well known herbicide.