Abstract:
:Beta-hemoglobinopathies such as sickle cell disease represent a major global unmet medical need. De-repression of fetal hemoglobin in erythrocytes is a clinically validated approach for the management of sickle cell disease, but the only FDA-approved medicine for this purpose has limitations to its use. We conducted a phenotypic screen in human erythroid progenitor cells to identify molecules with the ability to de-repress fetal hemoglobin, which resulted in the identification of the benzoxaborole-containing hit compound 1. This compound was found to have modest cellular potency and lead-like pharmacokinetics, but no identifiable SAR to enable optimization. Systematic deconstruction of a closely related analog of 1 revealed the fragment-like carboxylic acid 12, which was then optimized to provide tetrazole 31, which had approximately 100-fold improved cellular potency compared to 1, high levels of oral exposure in rats, and excellent solubility.
journal_name
Bioorg Med Chem Lettjournal_title
Bioorganic & medicinal chemistry lettersauthors
Benowitz AB,Eberl HC,Erickson-Miller CL,Gilmartin AG,Gore ER,Montoute MN,Wu Zdoi
10.1016/j.bmcl.2018.10.032subject
Has Abstractpub_date
2018-12-15 00:00:00pages
3676-3680issue
23-24eissn
0960-894Xissn
1464-3405pii
S0960-894X(18)30834-5journal_volume
28pub_type
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