摘要:
This application discloses a novel process for the preparation of himbacine analogs useful as thrombin receptor antagonists. The process is based in part on the use of a base-promoted dynamic epimerization of a chiral nitro center. The chemistry taught herein can be exemplified by the following:
摘要:
The present invention relates to synthetic processes useful in the preparation of compounds of Formula (I) that are useful as inhibitors of the hepatitis C virus (HCV) NS3 protease and have application in the treatment of conditions caused by HCV. In particular, the present invention relates to novel oxidation processes useful for preparing compounds of Formula (I) and related compounds, including pharmaceutically acceptable salts, hydrates and solvates thereof, and including stereoisomers thereof.
摘要:
The present application relates to a process for preparing a compound of formula I: wherein R1 is alkyl; R2 is alkyl; and R3 is optionally substituted cycloalklylalkyl which comprises oxidizing a compound of the formula wherein R1, R2 and R3 are defined above to yield a compound of formula I.
摘要翻译:本申请涉及制备式I化合物的方法:其中R 1是烷基; R 2是烷基; 和R 3是任选取代的环烷基烷基,其包括将下式化合物其中R 1,R 2和R 3, SUP>如上定义,得到式I化合物。
摘要:
This application discloses a novel process to synthesize (3-alkyl-5-piperidin-1-yl-3,3a-dihydro-pyrazolo[1,5-a]pyrimidin-7-yl)-amino derivatives, and intermediates useful in the synthesis thereof. The subject (3-alkyl-5-piperidin-1-yl-3,3a-dihydro-pyrazolo[1,5-a]pyrimidin-7-yl)-amino derivatives are useful as cyclin-dependent kinase inhibitor compounds (CDK inhibitors) in pharmaceutical preparations.
摘要:
The present invention provides a method of resolving piperdin-yl-alkylene-alcohols, in high yield at high enantiomeric purity, for example 2-piperidin-2-yl-ethanol.
摘要:
A caster structure has a screw hole formed at the middle of a carrying plate and provided for passing, screwing, and pressing a screw, and then screwing and pressing tightly with a nut, so that the installed screw has a smaller thickness to lower the center of gravity of an installed wheel in addition to giving a dual nut fixing effect. The caster has bearings which are mainly thrust bearings for bearing a relatively larger axial gravity to prevent the bearing from being damaged by gravity and the balls from falling out. The bearings are limited and positioned securely to prevent installation gaps and dusts, to maintain a flexible rotation of the caster.
摘要:
An operation training simulation apparatus for a computer numerical control (CNC) machine includes a CNC casing assembly, a control panel device for inputting control and operation commands, a software simulator connected with the simulated control panel displayer, and a simulation displayer electrically connected to the software simulator. The casing assembly includes a CNC frame body. The control panel device is mounted on the casing assembly and has a realistic function control panel interface and a realistic operation control panel interface. The software simulator generates machining and operation simulations based on the inputted control and operation commands through the control panel device, and the simulation displayer visualizes the machining and operation simulations generated by the software simulator.
摘要:
An improved process for manufacture of polymer coated composite substrates is described. a coated composite substrate is prepared in the press by applying a layer of a primer coating composition to the surface of a compressible mat comprising fibers and/or particles and a resin binder. The primer coating composition is formulated preferably as a fast setting polymer latex capable of forming a chemically crosslinked polymer matrix when applied to the surface of a compressible mat. a thermosetting top coat composition can be applied directly over the wet primer coating composition before heat-processing the mat to improve surface quality and release characteristics. Compressing and heating the coated mat produces a primed composite substrate directly out of the press.
摘要:
The present disclosure includes methods, devices, modules, and systems for operating semiconductor memory. One method embodiment includes determining a status of a page of memory cells without using input/output (I/O) circuitry, and outputting the status through the I/O circuitry.