摘要:
The present invention relates to novel substituted benzfurochromenes and related compounds having the general formula (I), salts and chiral, achiral derivatives thereof; wherein R1, R2, R3, R4, R5, R6, R7, R8 are independently selected from the groups consisting of hydrogen, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkoxyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted alkylthio, optionally substituted amino, optionally substituted acylamino, optionally substituted arylamino, optionally substituted acylthio, optionally substituted acyl, optionally substituted aroyl, optionally substituted acyloxy, optionally substituted thioamido, halogens, nitriles, esters, hydroxy, mercapto, carbontrifluoride, nitro but not limited to this; wherein R1R2 or R2R3 or R6R7 may be connected and form either a five membered ring or a six membered ring such as optionally substituted furan, optionally substituted dihydrofuran, optionally substituted pyran; or may be connected through a methylenedeoxy moiety; wherein X is selected from the units consisting of optionally a ketone group, optionally a methylene group, optionally substituted methylene group, optionally substituted alkene; wherein Y and Z is selected from the units consisting of CH, C—OH, C-Me, C—OMe with the proviso that bond between Y and Z is a single bond; Wherein Y and Z may be a carbon atom with the proviso that bond between Y and Z is a double bond. The compounds of the general formula is useful for the prevention and treatment of bone related disorders.
摘要:
The present invention relates to novel substituted benzfurochromenes and related compounds having the general formula (I), salts and chiral, achiral derivatives thereof; wherein R1, R2, R3, R4, R5, R6, R7, R8 are independently selected from the groups consisting of hydrogen, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkoxyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted alkylthio, optionally substituted amino, optionally substituted acylamino, optionally substituted arylamino, optionally substituted acylthio, optionally substituted acyl, optionally substituted aroyl, optionally substituted acyloxy, optionally substituted thioamido, halogens, nitriles, esters, hydroxy, mercapto, carbontrifluoride, nitro but not limited to this; wherein R1R2 or R2R3 or R6R7 may be connected and form either a five membered ring or a six membered ring such as optionally substituted furan, optionally substituted dihydrofuran, optionally substituted pyran; or may be connected through a methylenedeoxy moiety; wherein X is selected from the units consisting of optionally a ketone group, optionally a methylene group, optionally substituted methylene group, optionally substituted alkene; wherein Y and Z is selected from the units consisting of CH, C—OH, C-Me, C—OMe with the proviso that bond between Y and Z is a single bond; Wherein Y and Z may be a carbon atom with the proviso that bond between Y and Z is a double bond. The compounds of the general formula is useful for the prevention and treatment of bone related disorders.
摘要:
The present invention relates to novel donor-acceptor fluorene compounds, which can be used as for the fabrication of electroluminescent devices, and a process of preparing said novel compounds. More particularly, the present invention relates to amine donor and nitrile/ester acceptor fluorenes, fluorenones their π-conjugated systems and related compounds, processes for preparing the said compounds including oxidation of fluorenes to corresponding fluorenones and their use in preparing organic electronic devices such as organic light emitting diodes (OLEDs), photovoltaic/solar cell, Field effect transistors and other useful electroluminescent devices. The compounds are prepared by reacting 2H-pyran-2-ones in isolated or rigid conformations with cyclic ketones containing methylene carbonyl moiety in the presence of a base in an organic solvent. The present invention also relates to a new concept and approach to overcome the problem of ‘Green emission defect’ in 9-unsubstituted fluorene-based organic light emitting diodes which occurs due to the conversion of fluorenes to fluorenones that show emission mainly in green-yellow region. In the present invention we have placed donor-acceptor substituents in such a way that donor-acceptor fluorenones show emission in the blue region (instead of green-yellow region) thus improving the blue color purity and overcoming the problem of green emission defect.
摘要:
A vertebral facet distractor includes an elongated generally cylindrical contour including a first end surface, a second end surface, an outer sidewall, an inner sidewall, and a central lumen having an opening in one of the first end surface and the second end surface. The outer sidewall may be provided with a surface irregularity, such as a screw thread. The vertebral facet distractor may further include a holder including an elongated body and a tip that extends through the opening and is engaged with the contour. The tip may be provided with a screw thread that is engaged with the contour or may engage the contour in an interference fit.
摘要:
A storage server stores data in a stripe of a parity group that includes a plurality of data storage devices to store data and a parity storage device to store parity information. The stripe includes a data block from each of the data storage devices and a parity block from the parity storage device. The storage server receives a data access request specifying a data block in the stripe, and a lost write detection module detects an error in the data block. The lost write detection module compares a first storage device signature stored in a metadata field associated with the data block to a second storage device signature stored in a global field of the data storage device containing the data block. If the first storage device signature matches the second storage device signature, the lost write detection module compares a consistency point count stored in the metadata field to a reconstructed consistency point count. If the reconstructed consistency point count is greater than the consistency point count stored in the metadata field, the lost write detection module identifies the error as a lost write error for the data block. Accurately detecting and identifying the location of a lost write allows the storage server to correct the error and provide a user with a complete and accurate set of data.
摘要:
A parity pattern defines a repeated distribution of parity blocks within a distributed parity disk array (“DPDA”). The parity pattern identifies on which disks the parity block or blocks for a stripe are located. When a new disk is added to the DPDA, the parity pattern is modified so that the distribution of parity blocks within the parity pattern is even. Parity blocks within the DPDA are then redistributed to conform with the modified parity pattern.
摘要:
An n-way parity protection technique enables recovery of up to n storage device (e.g., disk) failures in a parity group of a storage array encoded to protect against n-way disk failures. The storage array is created by first configuring the array with m data disks, where m=p−1 and p is a prime number and a row parity disk. n−1 diagonal parity disks are then added to the array. Each diagonal parity set (i.e., diagonal) is associated with a slope that defines the data and row parity blocks of the array that are included in the diagonal. All diagonals having a common slope within a parity group are organized as a diagonal parity class. For each diagonal parity class, a diagonal parity storage disk is provided to store the diagonal parity.
摘要:
Storage servers use a fast, non-volatile or persistent memory to store data until it can be written to slower mass storage devices such as disk drives. If the server crashes before a write can complete, the data remains safely stored in non-volatile memory. If the data cannot be committed to disk when the server reboots (e.g. because the destination mass storage device is unavailable), it is stored in a file. When the disk reappears, the data in the file may be used to restore a file or filesystem on the disk to a consistent state.
摘要:
A network storage server implements a method to maintain a parity declustered RAID organization with distributed hot sparing. The parity declustered RAID organization, which provides data redundancy for a network storage system, is configured as a RAID organization with a plurality of logical drives. The RAID organization is then distributed in a parity declustered fashion to a plurality of physical drives in the network storage system. The RAID organization also has a spare space pre-allocating on each of the plurality of physical drives. Upon failure of one of the plurality of physical drives, data stored in the failed physical drives can be reconstructed and stored to spare space of the surviving physical drives. After reconstruction, the plurality of logical drives remains parity-declustered on the plurality of surviving physical drives.