Multienzymatic cascade synthesis of an enantiopure (2R,5R)-1,3-oxathiolane anti-HIV agent precursor
摘要:
An enantiopure (2R,5R)-1,3-oxathiolane was obtained using a multienzymatic cascade protocol. By employing a combination of surfactant-treated subtilisin Carlsberg and Candida antarctica lipase B, the absolute configuration of the resulting 1,3-oxathiolane ring was efficiently controlled, resulting in an excellent enantiomeric excess (> 99%). This enantiopure 1,3-oxathiolane derivative is a key precursor to anti-HIV agents, such as lamivudine, through subsequent N-glycosylation.
DIHETEROCYCLIC TRIAZINONE NUCLEOSIDE ANALOGS AND THEIR USE FOR MEDICATION
申请人:Xu Lifeng
公开号:US20210292347A1
公开(公告)日:2021-09-23
This invention relates to novel of formula I that are useful for the treatment, prevention and/or amelioration of human diseases of cancers.
This invention also relates with their pharmaceutical compositions, preparative General Methods and applications.
Preparation of intermediates useful in the synthesis of antiviral nucleosides
申请人:——
公开号:US20030162992A1
公开(公告)日:2003-08-28
The present invention is an efficient process for the manufacture of &agr;-acyloxyacetaldehyde, a key intermediate in the synthesis of 1,3-oxathiolane and 1,3-dioxolane nucleosides.
Modified nucleosides for the treatment of viral infections and abnormal cellullar proliferation
申请人:Stuyver Lieven
公开号:US20110269707A1
公开(公告)日:2011-11-03
The disclosed invention is a composition for and a method of treating a Flaviviridae (including BVDV and HCV), Orthomyxoviridae (including Influenza A and B) or Paramyxoviridae (including RSV) infection, or conditions related to abnormal cellular proliferation, in a host, including animals, and especially humans, using a nucleoside of general formula (I)-(XXIII) or its pharmaceutically acceptable salt or prodrug.
This invention also provides an effective process to quantify the viral load, and in particular BVDV, HCV or West Nile Virus load, in a host, using real-time polymerase chain reaction (“RT-PCR”). Additionally, the invention discloses probe molecules that can fluoresce proportionally to the amount of virus present in a sample.
The present invention relates to a method of preparing BCH-189 and various analogues of BCH-189 from inexpensive precursors with the option of introducing functionality as needed. This synthetic route allows the stereoselective preparation of the biologically active isomer of these compounds, β-BCH-189 and related compounds. Furthermore, the stereochemistry at the nucleoside 4'-position can be controlled to produce enantiomerically-enriched β-BCH-189 and its analogues.
Method and compositions for the synthesis of bch-189 and related compounds
申请人:EMORY UNIVERSITY
公开号:EP1772151A2
公开(公告)日:2007-04-11
The present invention relates to a method of preparing BCH-189 and various analogues of BCH-189 from inexpensive precursors with the option of introducing functionality as needed. This synthetic route allows the stereoselective preparation of the biologically active isomer of these compounds, β-BCH-189 and related compounds. Furthermore, the stereochemistry at the nucleoside 4'-position can be controlled to produce enantiomerically-enriched β-BCH-189 and its analogues.