Highly Stereoselective Synthesis of Lamivudine (3TC) and Emtricitabine (FTC) by a Novel N-Glycosidation Procedure
摘要:
The combined use of silanes (Et3SiH or PMHS) and I-2 as novel N-glycosidation reagents for the synthesis of bioactive oxathiolane nucleosides 3TC and FTC is reported. Both systems (working as anhydrous HI sources) were devised to act as substrate activators and N-glycosidation promoters. Excellent results in terms of chemical efficiency and stereoselectivity of the reactions were obtained; surprisingly, the nature of the protective group at the N4 position of (fluoro)cytosine additionally influenced the stereochemical reaction outcome.
[EN] BASE-MODIFIED CYTIDINE NUCLEOTIDES FOR LEUKEMIA THERAPY<br/>[FR] NUCLÉOTIDES DE CYTIDINE À BASE MODIFIÉE DESTINÉS À LA THÉRAPIE DE LA LEUCÉMIE
申请人:MEDIVIR AB
公开号:WO2019245444A1
公开(公告)日:2019-12-26
Compounds of the formula I wherein X is a bond or -CH2, and pharmaceutically acceptable salts thereof are useful in the parenteral treatment of leukemia, myelodysplastic syndrome or lymphoma, especially in patients presenting with cytarabine resistance and/or over 60 years of age.
SUBSTITUTED NUCLEOSIDES, NUCLEOTIDES AND ANALOGS THEREOF
申请人:Alios BioPharma, Inc.
公开号:US20130165400A1
公开(公告)日:2013-06-27
Disclosed herein are nucleosides, nucleotides and analogs thereof, pharmaceutical compositions that include one or more of nucleosides, nucleotides and analogs thereof, and methods of synthesizing the same. Also disclosed herein are methods of ameliorating and/or treating a disease and/or a condition, including an infection from a paramyxovirus and/or an orthomyxovirus, with a nucleoside, a nucleotide and an analog thereof.
[EN] DIOXOLANE ANALOGUES OF URIDINE FOR THE TREATMENT OF CANCER<br/>[FR] ANALOGUES DIOXOLANE D'URIDINE POUR LE TRAITEMENT DU CANCER
申请人:MEDIVIR AB
公开号:WO2016030335A1
公开(公告)日:2016-03-03
The invention provides compounds of formula (I), wherein: R1 is OR11, or NR5R5'; R2 is H or F; R5 is H, C1-C6alkyl, OH, C(=O)R6, O(C=O)R6 or O(C=O)OR6; R5´ is H or C1-C6alkyl; R6 is C1-C6alkyl or C3-C7cycloalkyl; R13 is H, phenyl, pyridyl, benzyl, indolyl or naphthyl wherein the phenyl, pyridyl, benzyl, indolyl and naphthyl is optionally substituted with 1, 2 or 3 R22; and the other variables are as defined in the claims, which are of use in the treatment of cancer, and related aspects.
[EN] SUBSTITUTED NUCLEOSIDES, NUCLEOTIDES AND ANALOGS THEREOF<br/>[FR] NUCLÉOSIDES, NUCLÉOTIDES SUBSTITUÉS ET LEURS ANALOGUES
申请人:ALIOS BIOPHARMA INC
公开号:WO2014209979A1
公开(公告)日:2014-12-31
Disclosed herein are nucleosides, nucleotides and analogs thereof, pharmaceutical compositions that include one or more of nucleosides, nucleotides and analogs thereof, and methods of synthesizing the same. Also disclosed herein are methods of ameliorating and/or treating a disease and/or a condition, including an infection from a norovirus, with a nucleoside, a nucleotide and an analog thereof.
nucleosides via Sharpless asymmetricdihydroxylation of N-allylpyrimidines or N-alkenylpurines is reported. A range of chiral acyclic nucleosides with two adjacent hydroxyl groups present on the side chains could be produced in good yields (up to 97% yield) and excellent enantioselectivities (90–99% ee). The synthetic utility of the reaction was demonstrated by the catalytic asymmetric synthesis of (S)-Cidofovir