Nucleotides and Pronucleotides of 2,2-Bis(hydroxymethyl)methylenecyclopropane Analogues of Purine Nucleosides: Synthesis and Antiviral Activity
摘要:
Phenylmethylphosphor-L-alaninate pronucleotides 7a, 7b, 8a, and 8b, cyclic phosphates 10a and 10b, and phosphates 11a and 11b derived from 2,2-bis(hydroxymethyl)methylenecyclopropane analogues 1a, 1b, 2a, and 2b were synthesized and evaluated for their antiviral activity. An improved protocol for the synthesis of analogues 1a, 1b, 2a, and 2b is also described. Phosphate 11a was the most effective agent against human and murine cytomegalovirus (EC50 0.25-1.1 muM). The Z-pronucleotides 7a and 7b had EC50 3.6-25.2 and 3-18.4 muM, respectively. The EC50 of cyclic phosphate 10a was 6.0-20 muM. The activity against Epstein-Barr (EBV) was assay-dependent. Pronucleotides 7a and 7b and phosphate 11a had EC50 2.3-3.4 muM against EBV/H-1, but 7b was cytotoxic (CC50 3.8 muM). Cyclic phosphate 10a was the only compound effective against EBV/Daudi (EC50 0.96 muM). but it was inactive in H-1 cells. Pronucleotide 7a was active against varicella zoster virus with EC50 6.3 and 7.3 muM, respectively. and hepatitis B virus (HBV, EC50 4.1 muM). Cyclic phosphate 10a was the most effective analogue against HBV (EC50 0.8 muM).
[EN] 2'-SUBSTITUTED NUCLEOSIDE DERIVATIVES AND METHODS OF USE THEREOF FOR THE TREATMENT OF VIRAL DISEASES<br/>[FR] DÉRIVÉS DE NUCLÉOSIDE 2'-SUBSTITUÉS ET PROCÉDÉS D'UTILISATION DE CEUX-CI POUR LE TRAITEMENT DE MALADIES VIRALES
申请人:MERCK SHARP & DOHME
公开号:WO2012142085A1
公开(公告)日:2012-10-18
The present invention relates to 2'-Substituted Nucleoside Derivatives of Formula (I): and pharmaceutically acceptable salts thereof, wherein A, B, X, R1, R2 and R3 are as defined herein. The present invention also relates to compositions comprising at least one 2'-Substituted Nucleoside Derivative, and methods of using the 2'-Substituted Nucleoside Derivatives for treating or preventing HCV infection in a patient.
2'-AZIDO SUBSTITUTED NUCLEOSIDE DERIVATIVES AND METHODS OF USE THEREOF FOR THE TREATMENT OF VIRAL DISEASES
申请人:Girijavallabhan Vinay
公开号:US20140206640A1
公开(公告)日:2014-07-24
The present invention relates to 2′-Azido Substituted Nucleoside Derivatives of Formula (I): and pharmaceutically acceptable salts thereof, wherein B, X, R
1
, R
2
and R
3
are as defined herein. The present invention also relates to compositions comprising at least one 2′-Azido Substituted Nucleoside Derivative, and methods of using the 2′-Azido Substituted Nucleoside Derivatives for treating or preventing HCV infection in a patient.
[EN] PRODRUGS OF THE TYROSINE KINASE INHIBITOR FOR TREATING CANCER<br/>[FR] PROMÉDICAMENTS DE L'INHIBITEUR DE TYROSINE KINASE POUR LE TRAITEMENT DU CANCER
申请人:RISEN SUZHOU PHARMA TECH CO LTD
公开号:WO2021035360A1
公开(公告)日:2021-03-04
There are provided compounds of Formula (I), and pharmaceutically acceptable salts and esters thereof, and pharmaceutical compositions thereof, useful for inhibition or modulation of the activity of tyrosine kinases and treatment of disease states or conditions mediated by tyrosine kinases, including cancers. (I)