Synonym
BOS172722; BOS-172722; BOS 172722;
IUPAC/Chemical Name
N2-(2-ethoxy-4-(4-methyl-4H-1,2,4-triazol-3-yl)phenyl)-6-methyl-N8-neopentylpyrido[3,4-d]pyrimidine-2,8-diamine
InChi Key
SGWLRDAOCLITOM-UHFFFAOYSA-N
InChi Code
InChI=1S/C24H30N8O/c1-7-33-19-11-16(22-31-27-14-32(22)6)8-9-18(19)29-23-25-12-17-10-15(2)28-21(20(17)30-23)26-13-24(3,4)5/h8-12,14H,7,13H2,1-6H3,(H,26,28)(H,25,29,30)
SMILES Code
CC1=CC2=CN=C(NC3=CC=C(C4=NN=CN4C)C=C3OCC)N=C2C(NCC(C)(C)C)=N1
Purity
>98% (or refer to the Certificate of Analysis)
Shipping Condition
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.
Storage Condition
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).
Solubility
Soluble in DMSO
Shelf Life
>3 years if stored properly
Drug Formulation
This drug may be formulated in DMSO
Stock Solution Storage
0 - 4 C for short term (days to weeks), or -20 C for long term (months).
HS Tariff Code
2934.99.9001
Biological target:
Inhibitor of monopolar spindle 1 (MPS1) checkpoint.
In vitro activity:
Optimizing HLM stability proved challenging since it was not possible to identify a consistent site of metabolism and lowering lipophilicity proved unsuccessful. Key to overcoming this problem was the finding that introduction of a methyl group at the 6-position of the pyrido[3,4- d]pyrimidine core significantly improved HLM stability. Met ID studies suggested that the methyl group suppressed metabolism at the distant aniline portion of the molecule, likely by blocking the preferred pharmacophore through which P450 recognized the compound. This work ultimately led to the discovery of BOS172722 as a Phase 1 clinical candidate.
Reference: Woodward HL, Innocenti P, Cheung KJ, Hayes A, Roberts J, Henley AT, Faisal A, Mak GW, Box G, Westwood IM, Cronin N, Carter M, Valenti M, De Haven Brandon A, O'Fee L, Saville H, Schmitt J, Burke R, Broccatelli F, van Montfort RLM, Raynaud FI, Eccles SA, Linardopoulos S, Blagg J, Hoelder S. Introduction of a Methyl Group Curbs Metabolism of Pyrido[3,4- d]pyrimidine Monopolar Spindle 1 (MPS1) Inhibitors and Enables the Discovery of the Phase 1 Clinical Candidate N2-(2-Ethoxy-4-(4-methyl-4 H-1,2,4-triazol-3-yl)phenyl)-6-methyl- N8-neopentylpyrido[3,4- d]pyrimidine-2,8-diamine (BOS172722). J Med Chem. 2018 Sep 27;61(18):8226-8240. doi: 10.1021/acs.jmedchem.8b00690. Epub 2018 Sep 10. PMID: 30199249; PMCID: PMC6166229.
In vivo activity:
In in vivo pharmacodynamic experiments, BOS172722 potently inhibits the spindle assembly checkpoint induced by paclitaxel in human tumor xenograft models of TNBC, as measured by inhibition of the phosphorylation of histone H3 and the phosphorylation of the MPS1 substrate, KNL1. This mechanistic synergy results in significant in vivo efficacy, with robust tumor regressions observed for the combination of BOS172722 and paclitaxel versus either agent alone in long-term efficacy studies in multiple human tumor xenograft TNBC models, including a patient-derived xenograft and a systemic metastasis model. The current target indication for BOS172722 is TNBC, based on their high sensitivity to MPS1 inhibition, the well-defined clinical patient population with high unmet need, and the synergy observed with paclitaxel.
Reference: Anderhub SJ, Mak GW, Gurden MD, Faisal A, Drosopoulos K, Walsh K, Woodward HL, Innocenti P, Westwood IM, Naud S, Hayes A, Theofani E, Filosto S, Saville H, Burke R, van Montfort RLM, Raynaud FI, Blagg J, Hoelder S, Eccles SA, Linardopoulos S. High Proliferation Rate and a Compromised Spindle Assembly Checkpoint Confers Sensitivity to the MPS1 Inhibitor BOS172722 in Triple-Negative Breast Cancers. Mol Cancer Ther. 2019 Oct;18(10):1696-1707. doi: 10.1158/1535-7163.MCT-18-1203. PMID: 31575759.
|
Solvent |
mg/mL |
mM |
comments |
| Solubility |
| DMSO |
5.0 |
11.19 |
|
| 1M HCl |
65.0 |
145.56 |
|
Note: There can be variations in solubility for the same chemical from different vendors or different batches from the same vendor. The following factors can affect the solubility of the same chemical: solvent used for crystallization, residual solvent content, polymorphism, salt versus free form, degree of hydration, solvent temperature. Please use the solubility data as a reference only. Warming and sonication will facilitate dissolving. Still have questions? Please contact our Technical Support scientists.
Preparing Stock Solutions
The following data is based on the
product
molecular weight
446.56
Batch specific molecular weights may vary
from batch to batch
due to the degree of hydration, which will
affect the solvent
volumes required to prepare stock solutions.
| Concentration / Solvent Volume / Mass |
1 mg |
5 mg |
10 mg |
| 1 mM |
1.15 mL |
5.76 mL |
11.51 mL |
| 5 mM |
0.23 mL |
1.15 mL |
2.3 mL |
| 10 mM |
0.12 mL |
0.58 mL |
1.15 mL |
| 50 mM |
0.02 mL |
0.12 mL |
0.23 mL |
Formulation protocol:
Woodward HL, Innocenti P, Cheung KJ, Hayes A, Roberts J, Henley AT, Faisal A, Mak GW, Box G, Westwood IM, Cronin N, Carter M, Valenti M, De Haven Brandon A, O'Fee L, Saville H, Schmitt J, Burke R, Broccatelli F, van Montfort RLM, Raynaud FI, Eccles SA, Linardopoulos S, Blagg J, Hoelder S. Introduction of a Methyl Group Curbs Metabolism of Pyrido[3,4- d]pyrimidine Monopolar Spindle 1 (MPS1) Inhibitors and Enables the Discovery of the Phase 1 Clinical Candidate N2-(2-Ethoxy-4-(4-methyl-4 H-1,2,4-triazol-3-yl)phenyl)-6-methyl- N8-neopentylpyrido[3,4- d]pyrimidine-2,8-diamine (BOS172722). J Med Chem. 2018 Sep 27;61(18):8226-8240. doi: 10.1021/acs.jmedchem.8b00690. Epub 2018 Sep 10. PMID: 30199249; PMCID: PMC6166229.
In vitro protocol:
Woodward HL, Innocenti P, Cheung KJ, Hayes A, Roberts J, Henley AT, Faisal A, Mak GW, Box G, Westwood IM, Cronin N, Carter M, Valenti M, De Haven Brandon A, O'Fee L, Saville H, Schmitt J, Burke R, Broccatelli F, van Montfort RLM, Raynaud FI, Eccles SA, Linardopoulos S, Blagg J, Hoelder S. Introduction of a Methyl Group Curbs Metabolism of Pyrido[3,4- d]pyrimidine Monopolar Spindle 1 (MPS1) Inhibitors and Enables the Discovery of the Phase 1 Clinical Candidate N2-(2-Ethoxy-4-(4-methyl-4 H-1,2,4-triazol-3-yl)phenyl)-6-methyl- N8-neopentylpyrido[3,4- d]pyrimidine-2,8-diamine (BOS172722). J Med Chem. 2018 Sep 27;61(18):8226-8240. doi: 10.1021/acs.jmedchem.8b00690. Epub 2018 Sep 10. PMID: 30199249; PMCID: PMC6166229.
In vivo protocol:
Anderhub SJ, Mak GW, Gurden MD, Faisal A, Drosopoulos K, Walsh K, Woodward HL, Innocenti P, Westwood IM, Naud S, Hayes A, Theofani E, Filosto S, Saville H, Burke R, van Montfort RLM, Raynaud FI, Blagg J, Hoelder S, Eccles SA, Linardopoulos S. High Proliferation Rate and a Compromised Spindle Assembly Checkpoint Confers Sensitivity to the MPS1 Inhibitor BOS172722 in Triple-Negative Breast Cancers. Mol Cancer Ther. 2019 Oct;18(10):1696-1707. doi: 10.1158/1535-7163.MCT-18-1203. PMID: 31575759.
1: Woodward HL, Innocenti P, Cheung KJ, Hayes A, Roberts J, Henley AT, Faisal A,
Mak GW, Box G, Westwood IM, Cronin N, Carter M, Valenti M, De Haven Brandon A,
O'Fee L, Saville H, Schmitt J, Burke R, Broccatelli F, van Montfort RLM, Raynaud
FI, Eccles SA, Linardopoulos S, Blagg J, Hoelder S. Introduction of a Methyl
Group Curbs Metabolism of Pyrido[3,4- d]pyrimidine Monopolar Spindle 1 (MPS1)
Inhibitors and Enables the Discovery of the Phase 1 Clinical Candidate
N(2)-(2-Ethoxy-4-(4-methyl-4 H-1,2,4-triazol-3-yl)phenyl)-6-methyl-
N(8)-neopentylpyrido[3,4- d]pyrimidine-2,8-diamine (BOS172722). J Med Chem. 2018
Sep 10. doi: 10.1021/acs.jmedchem.8b00690. [Epub ahead of print] PubMed PMID:
30199249.
