142629-80-9

Basic information

• Product Name: L-Alanine, N-(chlorophenoxyphosphinyl)-, methyl ester
• CAS NO: 142629-80-9
• Molecular Formula: C10H13ClNO4P
• Molecular Weight: 277.644
• Mol File: 142629-80-9.mol

Chemical Properties

• CAS DataBase Reference: L-Alanine, N-(chlorophenoxyphosphinyl)-, methyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: L-Alanine, N-(chlorophenoxyphosphinyl)-, methyl ester(142629-80-9)
• EPA Substance Registry System: L-Alanine, N-(chlorophenoxyphosphinyl)-, methyl ester(142629-80-9)

Safety Data

• Hazardous Substances Data: 142629-80-9(Hazardous Substances Data)

Upstream product

• 770-12-7 O-phenyl phosphorodichloridate 
• 10065-72-2 L-Alanine methyl ester 
• 108-95-2 phenol 
• 2491-20-5 L-alanine methyl ester hydrochloride 
• 67436-20-8 p-toluenesulfonic acid salt of (S)-α-alanine 

Downstream Products

• 173070-83-2 So₃₂₄ 
• 261909-26-6 methyl ((((1S,4R)-4-(2-amino-6-(cyclopropyl-amino)-9H-purin-9-yl)cyclopent-2-en-1-yl)methoxy)(phenoxy)phosphoryl)-L-alaninate 
• 499785-69-2 (2S)-[[(3AR, 4R, 6R, 6AR)-6-(3-carbamoyl-2-oxo-2H-pyrazine-1-yl)-2,2-dimethyl-tetrahydrofuro[3,4-d][1,3]dioxol-4-ylmethoxy]-phenoxy-phosphorylamino]-propionic acid methyl ester 

Relevant articles and documents

Kinase-independent phosphoramidate S1P1receptor agonist benzyl ether derivatives

Previously published S1P receptor modulator benzyl ether derivatives have shown potential as being viable therapeutics for the treatment of neurodegenerative diseases, however, two of the most S1P1-selective compounds are reported as being poorly phosphorylated by kinases in vivo. Phosphoramidates of BED compounds (2a, 2b) were synthesised with the aim of producing kinase-independent S1P receptor modulators. Carboxypeptidase, human serum and cell lysate processing experiments were conducted. ProTide BED analogues were found to have an acceptable level of stability in acidic and basic conditions and in vitro metabolic processing experiments showed that they are processed to the desired pharmacologically active monophosphate. The research describes the development of an entirely novel family of therapeutic agents.

Kinetin Riboside and Its ProTides Activate the Parkinson’s Disease Associated PTEN-Induced Putative Kinase 1 (PINK1) Independent of Mitochondrial Depolarization

Since loss of function mutations of PINK1 lead to early onset Parkinson’s disease, there has been growing interest in the discovery of small molecules that amplify the kinase activity of PINK1. We herein report the design, synthesis, serum stability, and hydrolysis of four kinetin riboside ProTides. These ProTides, along with kinetin riboside, activated PINK1 in cells independent of mitochondrial depolarization. This highlights the potential of modified nucleosides and their phosphate prodrugs as treatments for neurodegenerative diseases.

Synthesis of a phosphoramidate pro-drug of 6-thio-7-deaza-2′-deoxyguanosine (TDG): A regioselective phosphorylation

6-Thio-7-deaza-2′-deoxyguanosine-5′-triphosphate (TDG-TP) is a potent inhibitor of human telomerase. Regioselective synthesis of the 5′-phenyl methoxyalaninyl phosphate pro-drug of 6-thio-7-deaza-2′-deoxyguanosine (TDG) has been achieved in good yields by the reaction of TDG with phenyl methoxyalaninyl phosphochloridate in the presence of N-methylimidazole at -70°C. This pro-drug of TDG is effective in producing measurable levels of TDG-TP in A549 cells.

Synthesis and Biological Evaluation of (E)-4-Hydroxy-3-methylbut-2-enyl Phosphate (HMBP) Aryloxy Triester Phosphoramidate Prodrugs as Activators of Vγ9/Vδ2 T-Cell Immune Responses

The aryloxy triester phosphoramidate prodrug approach has been used with success in drug discovery. Herein, we describe the first application of this prodrug technology to the monophosphate derivative of the phosphoantigen HMBPP and one of its analogues. Some of these prodrugs exhibited specific and potent activation of Vγ9/Vδ2 T-cells, which were then able to lyse bladder cancer cells in vitro. This work highlights the promise of this prodrug technology in the discovery of novel immunotherapeutics.

Design, synthesis, and anti-HIV activity of 2′,3′-didehydro-2′,3′-dideoxyuridine (d4U), 2′,3′-dideoxyuridine (ddU) phosphoramidate 'ProTide' derivatives

We report the synthesis of 2′,3′-didehydro-2′,3′-dideoxyuridine (d4U) and 2′,3′-dideoxyuridine (ddU) phosphoramidate 'ProTide' derivatives and their evaluation against HIV-1 and HIV-2. In addition, we conducted molecular modeling studies on both d4U and ddU monophosphates to investigate their second phosphorylation process. The findings from the modeling studies provide compelling evidence for the lack of anti-HIV activity of d4U phosphoramidates, in contrast with the corresponding ddU phosphoramidates.

Potent double prodrug forms of synthetic phosphoantigens

Phosphoantigens are ligands of BTN3A1 that stimulate anti-cancer functions of γδ T cells, yet the potency of natural phosphoantigens is limited by low cell permeability and low metabolic stability. Derivatives of BTN3A1 ligand prodrugs were synthesized that contain an acetate-protected allylic alcohol and act as doubly protected prodrugs. A novel set of phosphonates, phosphoramidates, and phosphonamidates has been prepared through a new route that simplifies synthesis and postpones the point of divergence into different prodrug forms. One of the new prodrugs, compound 11, potently stimulates γδ T cell proliferation (72 h EC50 = 0.12 nM) and interferon γ response to loaded leukemia cells (4 h EC50 = 19 nM). This phosphonamidate form was > 900x more potent than the corresponding phosphoramidate, and the phosphonamidate form was also significantly more stable in plasma following acetate hydrolysis. Therefore, prodrug modification of phosphonate butyrophilin ligands at the allylic alcohol can both facilitate chemical synthesis and improve potency of γδ T cell stimulation.

2′-Fluoro-6′-methylene-carbocyclic adenosine phosphoramidate (FMCAP) prodrug: In vitro anti-HBV activity against the lamivudine-entecavir resistant triple mutant and its mechanism of action

Novel 2′-fluoro-6′-methylene-carbocyclic adenosine (FMCA) monophosphate prodrug (FMCAP) was synthesized and evaluated for its in vitro anti-HBV potency against a lamivudine-entecavir resistant clone (L180M + M204V + S202G). FMCA demonstrated significant antiviral activity against wild-type as well as lamivudine-entecavir resistant triple mutant (L180M + M204V + S202G). The monophosphate prodrug (FMCAP) demonstrated greater than 12-fold (12×) increase in anti-HBV activity without increased cellular toxicity. Mitochondrial and cellular toxicity studies of FMCA indicated that there is no significant toxicity up to 100 μM. Mode of action studies by molecular modeling indicate that the 2′-fluoro moiety by hydrogen bond as well as the Van der Waals interaction of the carbocyclic ring with the phenylalanine moiety of the polymerase promote the positive binding, even in the drug-resistant mutants.

Generation of Stable Isopentenyl Monophosphate Aryloxy Triester Phosphoramidates as Activators of Vγ9Vδ2 T Cells

Aryloxy triester phosphoramidate prodrugs of the monophosphate derivatives of isopentenyl pyrophosphate (IPP) and dimethylallyl pyrophosphate (DMAPP) were synthesized as lipophilic derivatives that can improve cell uptake. Despite the structural similarity of IPP and DMAPP, it was noted that their phosphoramidate prodrugs exhibited distinct stability profiles in aqueous environments, which we show is due to the position of the allyl bond in the backbones of the IPP and DMAPP monophosphates. As the IPP monophosphate aryloxy triester phosphoramidates showed favorable stability, they were subsequently investigated for their ability to activate Vγ9/Vδ2 T cells and they showed promising activation of this subset of T cells. Together, these findings represent the first report of IPP and DMAPP monophosphate prodrugs and the ability of IPP aryloxy triester phosphoramidate prodrugs to activate Vγ9/Vδ2 T cells highlighting their potential as possible immunotherapeutics.

2,4,7-SUBSTITUTED-7-DEAZA-2'-DEOXY-2'-FLUOROARABINOSYL NUCLEOSIDE AND NUCLEOTIDE PRO-DRUGS AND USES THEREOF

The present disclosure is concerned with 2,4,7-substituted-7-deaza-2'-deoxy-2'- fluoroarabinosyl nucleoside and nucleotide prodrugs that are capable of inhibiting viral infections and methods of treating viral infections such as, for example, human immunodeficiency virus (HIV), human papillomavirus (HPV), herpes simplex virus (HSV), human cytomegalovirus (HCMV), chicken pox, infectious mononucleosis, mumps, measles, rubella, shingles, ebola, viral gastroenteritis, viral hepatitis, viral meningitis, human metapneumovirus, human parainfluenza virus type 1, parainfluenza virus type 2, parainfluenza virus type 3, respiratory syncytial virus, viral pneumonia, Chikungunya virus (CHIKV), Venezuelan equine encephalitis (VEEV), dengue (DENV), influenza, West Nile virus (WNV), zika (ZIKV), 229E, NL63, OC43, HKU1, Middle East respiratory syndrome coronavirus (MERS-CoV), severe acute respiratory syndrome coronavirus (SARS-CoV), and severe acute respiratory syndrome coronavirus disease 2019 (SARS-CoV-2), using these compounds. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Aryloxy Triester Phosphoramidates as Phosphoserine Prodrugs: A Proof of Concept Study

The specific targeting of protein-protein interactions by phosphoserine-containing small molecules has been scarce due to the dephosphorylation of phosphoserine and its charged nature at physiological pH, which hinder its uptake into cells. To address these issues, we herein report the synthesis of phosphoserine aryloxy triester phosphoramidates as phosphoserine prodrugs that are enzymatically metabolized to release phosphoserine. This phosphoserine-masking approach was applied to a phosphoserine-containing inhibitor of 14-3-3 dimerization, and the generated prodrugs exhibited improved pharmacological activity. Collectively, this provided a proof of concept that the masking of phosphoserine with biocleavable aryloxy triester phosphoramidate masking groups is a viable intracellular delivery system for phosphoserine-containing molecules. Ultimately, this will facilitate the discovery of phosphoserine-containing small-molecule therapeutics.