Compounds that expand hematopoietic stem cells

摘要

The present invention relates to compounds and compositions for expanding the number of CD34+ cells for transplantation. The invention further relates to a cell population comprising expanded hematopoietic stem cells (HSCs) and its use in autologous or allogeneic transplantation for the treatment of patients with inherited immunodeficient and autoimmune diseases and diverse hematopoietic disorders to reconstitute the hematopoietic cell lineages and immune system defense.

主权项

1. A compound of Formula Ia: in which:
L is selected from —NR5a(CH2)2-3, —NR5a(CH2)2NR5b—, —NR5a(CH2)2S—, —NR5aCH2CH(OH)— and —NR5aCH(CH3)CH2—; wherein R5a and R5b are independently selected from hydrogen and C1-4alkyl;R1 is selected from thiophenyl, 1H-benzoimidazolyl, isoquinolinyl, 1H-imidazopyridinyl, benzothiophenyl, pyrimidinyl, pyridinyl, pyrazinyl, pyridazinyl, and thiazolyl; wherein
said thiophenyl, 1H-benzoimidazolyl, isoquinolinyl, 1H-imidazopyridinyl, benzothiophenyl, pyrimidinyl, pyridinyl, pyrazinyl, pyridazinyl, or thiazolyl of R1 can be optionally substituted by 1 to 3 radicals independently selected from cyano, hydroxy, C1-4alkyl, C1-4alkoxy, halo, halo-substituted-C1-4alkyl, halo-substituted-C1-4alkoxy, amino, —C(O)R8a, —S(O)0-2R8a, —C(O)OR8a and —C(O)NR8aR8b; wherein R8a and R8b are independently selected from hydrogen and C1-4alkyl;R2 is selected from —S(O)2NR6aR6b, —NR6aC(O)R6b—, —NR6aC(O)NR6bR6c, phenyl, 1H-pyrrolopyridin-3-yl, 1H-pyrrolopyridin-5-yl, 1H-indolyl thiophenyl, pyridinyl, 1H-1,2,4-triazolyl, 2-oxoimidazolidinyl, 1H-pyrazolyl, 2-oxo-2,3-dihydro-1H-benzoimidazolyl and 1H-indazolyl; wherein
R6a, R6b and R6c are independently selected from hydrogen and C1-4alkyl; andsaid phenyl, 1H-pyrrolopyridin-3-yl, 1H-pyrrolo[2,3-b]pyridin-5-yl, 1H-indolyl, thiophenyl, pyridinyl, 1H-1,2,4-triazolyl, 2-oxoimidazolidinyl, 1H-pyrazolyl, 2-oxo-2,3-dihydro-1H-benzoimidazolyl or 1H-indazolyl of R2 is optionally substituted with 1 to 3 radicals independently selected from hydroxy, halo, methyl, methoxy, amino, —O(CH2)2NR7aR7b, —S(O)2NR7aR7b, —OS(O)2NR7aR7b and —NR7aS(O)2R7b; wherein R7a and R7b are independently selected from hydrogen and C1-4alkyl;R3 is selected from hydrogen, C1-4alkyl and biphenyl; andR4 is selected from C1-10alkyl, prop-1-en-2-yl, cyclohexyl, cyclopropyl, 2-(2-oxopyrrolidin-1-yl)ethyl, oxetan-2-yl, oxetan-3-yl, benzhydryl, tetrahydro-2H-pyran-2-yl, tetrahydro-2H-pyran-3-yl, phenyl, tetrahydrofuran-3-yl, and benzyl, (4-pentylphenyl)(phenyl)methyl and 1-(1-(2-oxo-6,9,12-trioxa-3-azatetradecan-14-yl)-1H-1,2,3-triazol-4-yl)ethyl wherein
said alkyl, cyclopropyl, cyclohexyl, 2-(2-oxopyrrolidin-1-yl)ethyl, oxetan-3-yl, oxetan-2-yl, benzhydryl, tetrahydro-2H-pyran-2-yl, tetrahydro-2H-pyran-3-yl, phenyl, tetrahydrofuran-3-yl, benzyl, (4-pentylphenyl)(phenyl)methyl or 1-(1-(2-oxo-6,9,12-trioxa-3-azatetradecan-14-yl)-1H-1,2,3-triazol-4-yl)ethyl can be optionally substituted with 1 to 3 radicals independently selected from hydroxy, C1-4alkyl and halo-substituted-C1-4alkyl; or a salt thereof.