摘要:
The present process provides an improved method for the preparation of 4-amino-1-((2R,3R,4R,5R)-3-fluoro-4-hydroxy-5-hydroxymethyl-3-methyl-tetrahydrofuran-2-yl)-1H-pyrimidin-2-one of the formula (IV) which is a potent inhibitor of Hepatitis C Virus (HCV) NS5B polymerase.
摘要:
The present process provides an improved method for converting 2′-deoxy-2′-fluoro-2′-methyl-D-ribonolactones derivatives to 3-fluoro-3-methyl-2-chlorofuran compounds which are useful for the synthesis of nucleosides and improved processes for the synthesis of the D-ribonolactone compounds.
摘要:
The present process provides an improved method for the preparation of 4-amino-1-((2R,3R,4R,5R)-3-fluoro-4-hydroxy-5-hydrox-ymethyl-3-methyl-tetrahydro-furan-2-yl)-1H-pyrimidin-2-one of the formula (IV) which is a potent inhibitor of Hepatitis C Virus (HCV) NS5B polymerase.
摘要:
A process for preparing phosphoramidate prodrugs or cyclic phosphate prodrugs of nucleoside derivatives, which is a compound, its stereoisomers, salts (acid or basic addition salts), hydrates, solvates, or crystalline forms thereof.
摘要:
A process for preparing phosphoramidate prodrugs or cyclic phosphate prodrugs of nucleoside derivatives, which is a compound, its stereoisomers, salts (acid or basic addition salts), hydrates, solvates, or crystalline forms thereof.
摘要:
A process for preparing phosphoramidate prodrugs or cyclic phosphate prodrugs of nucleoside derivatives, which is a compound, its stereoisomers, salts (acid or basic addition salts), hydrates, solvates, or crystalline forms thereof.
摘要:
Disclosed herein are nucleoside phosphoramidates and their use as agents for treating viral diseases. These compounds are inhibitors of RNA-dependent 5 RNA viral replication and are useful as inhibitors of HCV NS5B polymerase, as inhibitors of HCV replication and for treatment of hepatitis C infection in mammals.
摘要:
A user may be willing to purchase items or participate in a pay-for service offered by a service provider. A service provider may wish to verify characteristics of the user prior to allowing transactions to take place, and may want to secure the transactions once the transactions are allowed. A credential issued to a user and a transaction application uploaded to a user device may be used to secure transactions between the user and a service provider interface, such as a webserver or a point-of-sale. The transaction application may capture real-time user data and comparing the real-time user data to prior user data stored on the credential, authenticate the service provider interface to the user and the user to the service provider interface; and establish an encrypted session between the service provider interface and the transaction application adapted to authenticate the transactions between the user and the service provider interface.
摘要:
Oligonucleotide analogs are disclosed having pyrimidine monomeric sub-units therein that are modified at the 2′ and 5′ positions. Monomeric sub-units having these modifications may be further modified at the 2′ position. Improved processes for the synthesis of 2′-O-substituted pyrimidine nucleosides are also provided. The processes feature alkylation of a 2,2′-anhydropyrimidine nucleoside or a 2S,2′-anhydropyrimidine nucleoside with a weak nucleophile in the presence of a Lewis acid.