Patent ID: 9579332
Date: 2017-02-28
CPC Classifications: A61K,A61P,C07F,C07H

Claim:
1. A compound of formula MBF I or a pharmaceutically acceptable salt or ester thereof: wherein B is selected from the group consisting of 2,6-diaminopurine, guanine, cytosine, 5-fluoro-cytosine, 7-deazaadenine, inosine, nebularine, nitropyrrole, nitroindole, 2-aminopurine, 2-amino-6-chloropurine, pseudouridine, pseudocytosine, pseudoisocytosine, 5-propynylcytosine, isocytosine, isoguanine, 2-thiopyrimidine, 6-thioguanine, 4-thiothymine, 4-thiouracil, O