Verubecestat

Cas：1286770-55-5 (free base)

Product Information：

Verubecestat, also known as MK-8931 or SCH 900931, is a potent and selective beta-secretase inhibitor, and BACE1 protein inhibitor or Beta-site APP-cleaving enzyme 1 inhibitor. Verubecestat is a promising novel therapeutic drug candidate in Alzheimer's disease. Verubecestat reduced Aβ cerebral spinal fluids (CSF) levels up to 92% and was well tolerated by patients. 

Chemical Formula: C17H17F2N5O3S

Exact Mass: 409.102 

Molecular Weight: 409.41 

Elemental Analysis: C, 49.87; H, 4.19; F, 9.28; N, 17.11; O, 11.72; S, 7.83

Synonym: 

MK-8931

MK 8931

MK8931

MK-8931-009

SCH 900931

SCH-900931

SCH900931

Verubecestat free base

Chemical Name:

(R)-N-(3-(3-amino-2,5-dimethyl-1,1-dioxido-5,6-dihydro-2H-1,2,4-thiadiazin-5-yl)-4-fluorophenyl)-5-fluoropicolinamide

InChi Key:

YHYKUSGACIYRML-KRWDZBQOSA-N

InChi Code:  InChI=1S/C17H17F2N5O3S/c1-17(9-28(26,27)24(2)16(20)23-17)12-7-11(4-5-13(12)19)22-15(25)14-6-3-10(18)8-21-14/h3-8H,9H2,1-2H3,(H2,20,23)(H,22,25)/t17-/m0/s1

Smiles Code:

O=C(NC1=CC=C(F)C([C@@](C2)(C)N=C(N)N(C)S2(=O)=O)=C1)C3=NC=C(F)C=C3

Technical Data：

Appearance: Solid powder

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: >2 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

In Vitro：

Verubecestat (MK-8931) is a β-site amyloid precursor protein cleaving enzyme 1/2 (BACE1/2) inhibitor. Verubecestat does not significantly inhibit human CYP isoforms 1A2, 2C9, 2C19, 2D6, and 3A4 (all IC50>40 μM), indicating that the compound is unlikely to be a perpetrator of CYP-mediated drug-drug interactions.

Verubecestat has IC50s of 2.1 nM, 0.7 nM, 4.4 nM for Aβ1-40, Aβ1-42, sAPPβ in HEK293 APPSwe/Lon cells.

In Vivo：

Verubecestat (MK-8931; 3 mg/kg; IV or oral) has a T1/2 of 1.9 hours, a CL of 46 mL/min/kg, a Vss of 5.4 L/kg, a C max of 0.27 μM and a AUC of 1.1 μM•h for Sprague-Dawley (SD) rats.

Verubecestat (1 mg/kg; IV) has a T1/2 of 4.9 hours, a CL of 21 mL/min/kg, a Vss of 7.5 L/kg for cynomolgus monkeys.

Verubecestat (1 mg/kg; IV) has a T1/2 of 9.7 hours, a CL of 4.3 mL/min/kg, a Vss of 2.7 L/kg for beagle dogs.

Verubecestat (30 mg/kg; orally; BID for 5 days) causes a modest (1.4-fold) induction of CYP 3A1 activity but does not significantly alter the expression of CYPs 1A1, 1A2, 2B, 3A2, or 4A in rats.

Verubecestat dose-dependently reduces CSF and cortex Aβ40 with ED50 values of 5 and 8 mg/kg, respectively, corresponding to unbound plasma EC50 values of 48 and 81 nM, respectively.

Verubecestat (3 and 10 mg/kg; orally) reduces profound, sustained of CSF Aβ40 levels and has peak effects on CSF Aβ lowering (72 and 81% reduction at 3 and 10 mg/kg, respectively) 12 h after dosing.

References：

1. Thaisrivongs DA, Morris WJ, Tan L, Song ZJ, Lyons TW, Waldman JH, Naber JR, Chen W, Chen L, Zhang B, Yang J. A Next Generation Synthesis of BACE1 Inhibitor Verubecestat (MK-8931). Org Lett. 2018 Mar 16;20(6):1568-1571. doi: 10.1021/acs.orglett.8b00259. Epub 2018 Feb 26. PubMed PMID: 29481097.

2. Chen W, Meng D, N'Zemba B, Morris WJ. Palladium-Catalyzed Enantioselective Synthesis of Cyclic Sulfamidates and Application to a Synthesis of Verubecestat. Org Lett. 2018 Mar 2;20(5):1265-1268. doi: 10.1021/acs.orglett.7b03639. Epub 2018 Feb 20. PubMed PMID: 29461065.

3. Barhate CL, Lopez DA, Makarov AA, Bu X, Morris WJ, Lekhal A, Hartman R, Armstrong DW, Regalado EL. Macrocyclic glycopeptide chiral selectors bonded to core-shell particles enables enantiopurity analysis of the entire verubecestat synthetic route. J Chromatogr A. 2018 Mar 2;1539:87-92. doi: 10.1016/j.chroma.2018.01.042. Epub 2018 Jan 31. PubMed PMID: 29397980.

4. Geerts H, Spiros A, Roberts P. Impact of amyloid-beta changes on cognitive outcomes in Alzheimer's disease: analysis of clinical trials using a quantitative systems pharmacology model. Alzheimers Res Ther. 2018 Feb 2;10(1):14. doi: 10.1186/s13195-018-0343-5. PubMed PMID: 29394903; PubMed Central PMCID: PMC5797372.

Products are for research use only. Not for human use.