[EN] PRODRUGS OF MYELOPEROXIDASE INHIBITORS<br/>[FR] PROMÉDICAMENTS D'INHIBITEURS DE LA MYÉLOPEROXYDASE
申请人:BIOHAVEN THERAPEUTICS LTD
公开号:WO2021072140A1
公开(公告)日:2021-04-15
Disclosed are prodrugs of myeloperoxidase (MPO) inhibitors, methods of treating MPO related disorders, e.g., multiple system atrophy, amyotrophic lateral sclerosis, and Huntingtons disease, and methods of neuroprotection, which include administering to a patient in need thereof the prodrugs, pharmaceutical compositions including the prodrugs, and kits including the pharmaceutical compositions and instructions for use.
In an attempt to improve the effectiveness of action of 5-fluoro-2'-deoxyuridine (FUdR), various kinds of O-alkylated water-soluble analogues were synthesized. Antitumor activities against sarcoma 180 (solid) were also evaluated. Some compounds exhibited potent activities. In particular, 3'-O-p-chlorobenzyl-3-N-aminoacyloxy-methylester derivatives were effective over a very wide range of dose and gave extremely large therapeutic ratios compared with known 5-fluorouracil (5-FU) derivatives.
In an attempt to improve the effectiveness and bioavailability of 6-mercaptopurine, various kinds of water-soluble analogues, such as 6-S-aminoacyloxymethyl mercaptopurine derivatives (3a-m) and 6-S, 9-disubstituted derivatives (7a, b and 9a, b), were synthesized. These compounds were evaluated for activity to augment antitumor immunity by using a double grafted tumor system. Antitumor activities against solid tumors (sarcoma 180 and colon 26) were also evaluated. Many compounds exhibited potent activities in both test systems. In particular, the aminopropionate derivative (3a) and the L-glutamate derivative (3f) showed significant enhancement of antitumor immunity together with potent antitumor activities.
The invention relates to compounds of the formula I
A-B-Z I
wherein the variables are as defined in the claims. The compounds are pro-drugs of A
2A
-receptor ligands with improved aqueous solubility, and are useful in the treatment of neurological and psychiatric disorders where an A
2A
-receptor is implicated.