摘要:
The invention relates to a process for preparing quinoline-substituted carbonate and carbamate compounds, which are important intermediates in the synthesis of 6-O-substituted macrolide antibiotics. The process employs metal-catalyzed coupling reactions to provide a carbonate or carbamate of formula (I) or (II) or a substrate that can be reduced to obtain the same.
摘要:
An improved replaceable liquid application system for applying a liquid intermediate transfer surface to a support surface in a printer is provided. The liquid application system is contained in a removable cassette and utilizes a liquid impregnated arcuate surface that engages the support surface by rolling contact. The liquid impregnated arcuate surface and a reclamation assembly are contained in a removable cartridge in the cassette. A cartridge life status assembly determines when the useful life of the cartridge has been exhausted. Push tabs on the cartridge and finger wells on the cassette allow for easy and convenient removal of a used cartridge and insertion of a replacement cartridge.
摘要:
The present invention discloses a process for the preparation of a hydroxymethylthiazole compound having formula 3: The process of the invention comprises reacting a halomethyl thiazole having the formula: ##STR1## with water, at an elevated temperature. Optionally, the reaction can be carried out in the presence of a base, such as sodium carbonate, which can react with any acid formed. In the process of the invention, X is a halogen atom; and R.sup.6 is selected from the group consisting of hydrogen, and halogen atoms. The invention also contemplates the preparation of acid addition salts of the hydroxymethylthiazole, compound 3.
摘要:
A method and system in a data processing system for transferring data from a first device to a second device within the data processing system. The data processing system includes a data bus, an address bus, a first address space associated with a memory and a second address space associated with an input/output device. Initially, a transfer signal is transmitted in the data processing system. The transfer signal identifies the transfer as a transfer concerning an address in the second address space associated with the input/output device. A first address package is then transmitted to the second device from the first device on the address bus. The first address package includes a transfer identifier, a first identifier associated with the first device and a second identifier associated with the second device. A second address package, comprising a byte count and an address, are transmitted to the second device from the first device on the address bus. If data is to be transferred, the data is then transferred on the data bus. Finally, a reply signal may be transmitted between the first and second devices, acknowledging the success or failure of the data transfer.
摘要:
A substantially pure compound of formula: ##STR1## wherein R.sub.6 and R.sub.7 are independently selected from ##STR2## wherein R.sub.a and R.sub.b are independently selected from hydrogen, loweralkyl and phenyl and R.sub.c, R.sub.d and R.sub.e are independently selected from hydrogen, loweralkyl, trifluoromethyl, alkoxy, halo and phenyl; and ##STR3## wherein the naphthyl ring is unsubstituted or substituted with one, two or three substitutents independently selected from loweralkyl, trifluoromethyl, alkoxy and halo; orR.sub.6 is as defined above and R.sub.7 is R.sub.7a OC(O)-- wherein R.sub.7a is loweralkyl; orR.sub.6 and R.sub.7 taken together with the nitrogen atom to which they are bonded are ##STR4## wherein R.sub.f, R.sub.g, R.sub.h and R.sub.l are independently selected from hydrogen, loweralkyl, alkoxy, halogen and trifluoromethyl; andR.sub.g is hydrogen, loweralkyl or benzyl; or an acid addition salt thereof.