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Chemical Structure| 1448188-62-2 Chemical Structure| 1448188-62-2

Structure of VH032
CAS No.: 1448188-62-2

Chemical Structure| 1448188-62-2

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VH-032 (VHL ligand 1) is a VHL ligand for PROTAC and potent, small molecule inhibitor of the VHL/HIF-1α interaction with Kd of 185 nM.

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Product Citations

Product Citations

Diana M. Soto-Martínez ; Garrett D. Clements ; John E. Díaza, Joy Becher ; Robert C. Reynoldsb, Christina Ochsenbauer ; Timothy S. Snowden ;

Abstract: The von Hippel-Lindau (VHL) protein serves as the substrate recognition subunit of the multi-subunit Cullin-2 RING E3 ubiquitin ligase (CRL2VHL), which regulates intracellular concentrations of hypoxia inducible factors (HIFs) through a ubiquitin proteasome system (UPS) cascade. Strategic recruitment of CRL2VHL by bi- or trifunctional targeted protein degraders (e.g., PROTACs®) offers the prospect of promoting aberrant polyubiquitination and ensuing proteasomal degradation of disease-related proteins. Non-peptidic, L-hydroxyproline-bearing VHL ligands such as VH032 (1) and its chiral benzylic amine analog Me-VH032 (2), are functional components of targeted protein degraders commonly employed for this purpose. Herein, we compare two approaches for the preparation of 1 and 2 primarily highlighting performance differences between Pd(OAc)2 and Pd-PEPPSI-IPr for the key C–H arylation of 4-methylthiazole. Results from this comparison prompted the development of a unified, five-step route for the preparation of either VH032 (1) or Me-VH032 (2) in multigram quantities, resulting in yields of 56% and 61% for 1 and 2, respectively. Application of N-Boc-L-4-hydroxyproline rather than N-tert-butoxycarbonyl to shield the benzylic amine during the coupling step enhances step economy. Additionally, we identified previously undisclosed minor byproducts generated during arylation steps along with observations from amine deprotection and amidation reaction steps that may prove helpful not only for the preparation of 1 and 2, but for other VHL recruiting ligands, as well.

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Product Details of VH032

CAS No. :1448188-62-2
Formula : C24H32N4O4S
M.W : 472.60
SMILES Code : CC1=C(C2=CC=C(CNC([C@@H]3C[C@@H](O)CN3C([C@@H](NC(C)=O)C(C)(C)C)=O)=O)C=C2)SC=N1
MDL No. :N/A

Safety of VH032

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319
Precautionary Statements:P501-P270-P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313-P301+P312+P330

Isoform Comparison

Protocol

Bio Calculators
Preparing Stock Solutions 1mg 5mg 10mg

1 mM

5 mM

10 mM

2.12mL

0.42mL

0.21mL

10.58mL

2.12mL

1.06mL

21.16mL

4.23mL

2.12mL

Dissolving Methods
Please choose the appropriate dissolution scheme according to your animal administration guide.For the following dissolution schemes, clear stock solution should be prepared according to in vitro experiments, and then cosolvent should be added in turn:

in order to ensure the reliability of the experimental results, the clarified stock solution can be properly preserved according to the storage conditions; The working fluid for in vivo experiment is recommended to be prepared now and used on the same day;

The percentage shown in front of the following solvent refers to the volume ratio of the solvent in the final solution; If precipitation or precipitation occurs in the preparation process, it can be assisted by heating and/or ultrasound.
Protocol 1
Protocol 2
 

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