WO1998012201A1 - Phosphorylating reagents - Google Patents
Phosphorylating reagents Download PDFInfo
- Publication number
- WO1998012201A1 WO1998012201A1 PCT/GB1997/002592 GB9702592W WO9812201A1 WO 1998012201 A1 WO1998012201 A1 WO 1998012201A1 GB 9702592 W GB9702592 W GB 9702592W WO 9812201 A1 WO9812201 A1 WO 9812201A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reagent
- group
- benzyl
- chlorophosphate
- phosphorylating
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K1/00—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length
- C07K1/006—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length of peptides containing derivatised side chain amino acids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
- C07F9/02—Phosphorus compounds
- C07F9/06—Phosphorus compounds without P—C bonds
- C07F9/08—Esters of oxyacids of phosphorus
- C07F9/09—Esters of phosphoric acids
- C07F9/14—Esters of phosphoric acids containing P(=O)-halide groups
- C07F9/1406—Esters of phosphoric acids containing P(=O)-halide groups containing the structure Hal-P(=O)-O-aryl
Definitions
- This invention describes novel phosphorylating reagents and the use thereof for solution or solid-phase chemistry and their particular use for the solid-phase synthesis of phosphorylated peptides and combinatorial libraries of phosphorylated organic compounds.
- eukaryotic cells the cells of ulticellular organisms
- Three groups of enzymes referred to collectively as the protein phosphatases (these enzymes hydrolyse the phosphoryl group of a phosphoprotein) are responsible for the dephosphorylation of the phosphoproteins.
- One group known as the serine-threonine protein phosphatases are collectively responsible for the dephosphorylation of certain phosphorylated serine or threonine residues within phosphoproteins (see Fig.
- PPl protein tyrosine phosphatases
- PP2A protein tyrosine phosphatases
- PP2B protein tyrosine phosphatases
- PP2C protein tyrosine phosphatases
- Phosphothreonine peptide syntheses typically employ large excesses of highly electrophilic phosphorus (III) reagents to introduce phosphorus into the preformed peptide and then an oxidant (e . g. tertiary-butyl hydroperoxide) is required to convert the phosphite triester to the phosphate triester prior to deprotection of the ester groups 4 ' 5 . While the peptide exists as its phosphate triester, it is particularly vulnerable to / ⁇ -elimination, which is undesirable.
- Such agents would obviate the need for an oxidant, and could possess labile phosphate ester protecting groups that would be compatible with solid-phase peptide synthesis .
- This invention provides an electrophilic phosphorylating reagent for amino acids and/or peptide sequences thereof comprising a compound as represented by formula (I) :
- A is a substituted aromatic group which is represented by formula (II) e.g. a fluorophenyl or A is an acid cleavable functionality such as a benzyl or substituted benzyl group represented by formula (III);
- B is a substituted aromatic group represented by formula (II) e.g. a fluorophenyl group, but not a ty benzyl or a substituted benzyl group; each X, X', X", X'" and X'"' are individually H or F atoms or any suitable moiety;
- Y is any halogen or leaving group.
- any suitable moiety with regard to groups X, X', X'', X''' and X' ' ' refers to any atom or group thereof which does not affect the lability of the compounds represented by formulae II or III.
- the reagent is bis (tetrafluorophenyl) chlorophosphate; and in this embodiment the preferred reagent is bis (2, 3, 5, 6-tetrafluorophenyl) chlorophosphate .
- the reagent is a benzyl, fluorophenyl halophosphate; and in this embodiment the preferred reagent is a benzyl, polyfluorophenyl chlorophosphate.
- reagents represented by the formula (I) have a fluorine in at least one ⁇ rtho position on at least one of the aromatic rings wherein the remaining positions X, X', X'' and X"' on (II) and X,
- X', X'', X''' and X''' on (III) can each be -H or -F atoms or any suitable moiety in any permutation. Additionally, the -H atom or -F atom or suitable moiety may be in the presence or absence of one or more similar or dissimilar other ring substituents .
- a further embodiment has a halogen or other leaving group attached to the phosphorus atom of reagent (I) at Y, where the leaving group can be one of -OR, -NRR', -NRR'R'' or -SR, wherein R, R' and R'' can be any suitable moiety.
- the invention further provides a method for the phosphorylation of oxygen, nitrogen or sulphur nucleophiles of amino acids and/or peptides wherein the nucleophile is treated with an excess of a reagent of general formula (I) followed by hydrolysis of the product.
- the hydrolysis reagent is trifluoroacetic acid.
- the oxygen nucleophile may be part of a primary or secondary alcohol, phenol, carboxylate or enolate group.
- amino acids may be present as single species or in combination within or outwith the same molecule, as in peptide sequences.
- the amino acid(s) may be tyrosine, serine and threonine.
- the amino acid is present as a resin bound moiety.
- the phosphorylation method may be utilised in solid, liquid or gel phase.
- the method is of considerable potential in the solid- phase synthesis of a whole range of organic phosphates from primary and secondary alcohols and phenols and is completely compatible with combinatorial and permutational organic synthesis.
- the method offers very significant advantages over the previously used two step phosphitylation-oxidation strategies, furthermore, the use of bis- ( pentafluorophenyl ) chlorophosphate (11) is of particular utility in the preparation of peptides containing two or more phosphorylated residues via a "global phosphorylation" strategy which involves introducing all of the phosphoryl groups in one step after the synthesis of the required peptide. The same is true for the introduction of more than one phosphoryl group into other organic molecules which contain more that one alcohol and/or phenol group.
- the examples illustrate that primary alcohols, secondary alcohols and phenols whether present as single species, or in combination within or outwith the same molecule, are efficiently phosphorylated by the polyfluoroaromatic chlorophosphate reagents.
- Other oxygen nucleophiles for example, carboxylate and enolate, and other nucleophiles, for example, those derived from nitrogen and sulphur are also expected to react with similar efficiency with the reagent.
- the examples herein relate to the phosphorylation reaction by bis- (pentafluorophenyl chlorophosphate (11) and other polyfluoroaromatic halophosphates shown by general formula I, where any, some or all X groups is H and/or F or other suitable moiety in any permutation whether in the presence or absence of one or more similar or dissimilar other ring substituents; (Y is a halogen or other leaving group) which should effect a similar facile phosphorylation.
- This method provides higher yields of phosphorylated product of high quality with less or no wasteful side reactions.
- Fig. la Illustrates the enzymatic dephosphorylation of a phosphorylated threonine (or serine) residue.
- Fig. lb Illustrates the enzymatic dephosphorylation of a phosphorylated tyrosine residue.
- Fig. lc Illustrates the enzymatic dephosphorylation of a phosphorylated histidine residue.
- Fig. 2 Illustrates reaction schemes 1A & IB.
- Reagents and Conditions i) 20% piperidine/DMF; ii) 5% (CH 3 CO) 2 0/DMF; iii) DMAP, TEA, PO(OPh) 2 Cl, DCM, 20°C; iv) 82.5% TFA: 5% phenol: 5% H 2 0: 5% thioanisole; 2.5% EDTA (reagent K), 80%; v) LiOH (aq), EtOH/CH 3 CN; vi) DMAP, TEA, P0(0PhF 5 ) ? C1 , DCM, 20°C; vii) Dowex Cl, 60%.
- Fig. 3a Shows the structure of bis ( pentafluorophenyl ) chlorophosphate (11).
- Fig. 3b Shows the structure of the bis (pentafluorophenyl ) phosphate derivative of cyclohexanol (12).
- Fig. 4 Shows the structure of pentafluorobenzyl- pentafluorophenyl chlorophosphate (13).
- Fig. 5 Illustrates reaction scheme 2. Reagents and Conditions: i) 1.01 eq iV-Chlorosuccinimide, toluene, 2hr, rt : ii) NaH, C 6 F 5 OH, THF, lhr, rt; iii) a) Nal, acetone, ⁇ , 15 mins . b) HCl q) ; iv) PC1 5 , DCM.
- Fig. 6a Shows the structure of the benzyl pentafluorophenyl derivative of cyclohexanol (18).
- Fig. 6b Shows the structure of the benzyl pentafluorophenyl derivative of ZV- ⁇ - t Boc- tyrosine methyl ester (19).
- Fig. 6c Shows the structure of the phosphopeptide Asp-Ala-Asp-Glu-Tyr(0P0 3 H 2 )-Leu (23).
- Fig. 7 Illustrates reaction scheme 3. Reagents and Conditions: i) 20% piperidine/DMF; ii) DMAP, TEA, PO ( OCH 2 Ph ) ( OPhF 5 ) , DCM, 20 °C ; i i i ) NaOH ( aq ) , DMSO ; iv ) 90 % TFA , 5 % H 2 0 , 5 % ' Et 3 SiH .
- Diphenyl chlorophosphate had been successfully employed to phosphorylate the secondary alcohol groups of yo- inositol and its analogues 7 .
- an N-acetyl (Ac) capped analogue of a known consensus sequence for a PP2A substrate as the target AcNH-Arg-Arg-Ala- Thr(P0 3 H 2 )-Val-Ala-OH (1), a series of solid-phases phosphorylation reactions were examined.
- modified reagents were designed, [for example preferably formula I, where II is a substituted phenyl group (where X, X', X'', X''' are H or F atoms or any suitable moiety). III is a benzyl or substituted benzyl group (where X, X', X'', X'", X' ' ' ' are H or F atoms or any suitable moiety) but not a phenyl or substituted phenyl group, and Y is any halogen.
- the major contaminant displayed 2 signals at -18.6 and -19.5 ppm in the 31 P NMR spectrum of the product and corresponding signals in the * H, 13 C and 19 F NMR spectra, consistent with the expected properties of the bis- ( benzyl ) -bis- (pentafluorophenyl ) pyrophosphate.
- the mass spectrum of the contaminant showed a molecular fragment ( / z (CI+) 507, [M-OPhF 5 ] + ) consistent with the structure of the pyrophosphate . Since this material would give identical phosphorylated products to the chlorophosphate, the crude reagent was used routinely for solid phase phosphorylations .
- the serine analogue of (10) was prepared using a similar protocol.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97941117A EP0931085A1 (en) | 1996-09-23 | 1997-09-23 | Phosphorylating reagents |
AU43139/97A AU4313997A (en) | 1996-09-23 | 1997-09-23 | Phosphorylating reagents |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9619768.6A GB9619768D0 (en) | 1996-09-23 | 1996-09-23 | Phosphorylation |
GB9619768.6 | 1996-09-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998012201A1 true WO1998012201A1 (en) | 1998-03-26 |
Family
ID=10800333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1997/002592 WO1998012201A1 (en) | 1996-09-23 | 1997-09-23 | Phosphorylating reagents |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0931085A1 (en) |
AU (1) | AU4313997A (en) |
GB (1) | GB9619768D0 (en) |
WO (1) | WO1998012201A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004073650A2 (en) | 2003-02-20 | 2004-09-02 | University Of South Florida | Peptidomimetic inhibitors of stat3 activity and their medical uses |
US7960434B2 (en) | 2006-05-19 | 2011-06-14 | University Of South Florida | Small molecule inhibitors of STAT3 with anti-tumor activity |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3341630A (en) * | 1964-05-04 | 1967-09-12 | Mc Donnell Douglas Corp | Pentafluorophenyl phosphoryl chlorides |
US3341631A (en) * | 1964-05-04 | 1967-09-12 | Mc Donnell Douglas Corp | Polyfluorophenyl phosphate esters |
US3408427A (en) * | 1964-12-28 | 1968-10-29 | Mc Donnell Douglas Corp | Bis(fluorophenyl) phosphoryl chlorides |
US5245069A (en) * | 1992-10-27 | 1993-09-14 | Merck & Co., Inc. | Process for the preparation of bis(aryl)-phosphorohalidates |
-
1996
- 1996-09-23 GB GBGB9619768.6A patent/GB9619768D0/en active Pending
-
1997
- 1997-09-23 WO PCT/GB1997/002592 patent/WO1998012201A1/en not_active Application Discontinuation
- 1997-09-23 AU AU43139/97A patent/AU4313997A/en not_active Abandoned
- 1997-09-23 EP EP97941117A patent/EP0931085A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3341630A (en) * | 1964-05-04 | 1967-09-12 | Mc Donnell Douglas Corp | Pentafluorophenyl phosphoryl chlorides |
US3341631A (en) * | 1964-05-04 | 1967-09-12 | Mc Donnell Douglas Corp | Polyfluorophenyl phosphate esters |
US3408427A (en) * | 1964-12-28 | 1968-10-29 | Mc Donnell Douglas Corp | Bis(fluorophenyl) phosphoryl chlorides |
US5245069A (en) * | 1992-10-27 | 1993-09-14 | Merck & Co., Inc. | Process for the preparation of bis(aryl)-phosphorohalidates |
Non-Patent Citations (3)
Title |
---|
HORMOZDIARI P ET AL: "Highly efficient solid-phase phosphopeptide synthesis using bis(polyfluorophenyl) chlorophosphates: preparation of serine-threonine protein phosphatase substrates", TETRAHEDRON LETT. (TELEAY,00404039);96; VOL.37 (45); PP.8227-8230, THE UNIVERSITY;SCH. CHEM.; ST. ANDREWS, FIFE; KY16 9ST; UK (GB), XP002047055 * |
JAN HES: "Di(2-tert-butylphenyl) Phosphorochloridate. A new selective Phosphorylating agent.", JOURNAL OF ORGANIC CHEMISTRY., vol. 39, no. 25, 1974, EASTON US, pages 3767 - 3769, XP002047054 * |
SCHULZ J ET AL: "Synthesis and properties of mechanism-based inhibitors and probes for inositol monophosphatase derived from 6-O-(2'-hydroxyethyl)-(1R,2R,4R,6R)-cyclohexane-1,2,4,6-tetraol", J. CHEM. SOC., CHEM. COMMUN. (JCCCAT,00224936);95; (22); PP.2353-6, THE UNIVERSITY, ST. ANDREWS;SCHOOL CHEMISTRY; FIFE; KY16 9ST; UK (GB), XP002047053 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004073650A2 (en) | 2003-02-20 | 2004-09-02 | University Of South Florida | Peptidomimetic inhibitors of stat3 activity and their medical uses |
WO2004073650A3 (en) * | 2003-02-20 | 2004-10-21 | Univ South Florida | Peptidomimetic inhibitors of stat3 activity and their medical uses |
US7342095B2 (en) | 2003-02-20 | 2008-03-11 | University Of South Florida | Peptidomimetic inhibitors of STAT activity and uses thereof |
US7842671B1 (en) | 2003-02-20 | 2010-11-30 | University Of South Florida | Peptidomimetic inhibitors of STAT activity and uses thereof |
US7960434B2 (en) | 2006-05-19 | 2011-06-14 | University Of South Florida | Small molecule inhibitors of STAT3 with anti-tumor activity |
US9604923B2 (en) | 2006-05-19 | 2017-03-28 | H.Lee Moffitt Cancer Center And Research Institute, Inc. | Small molecule inhibitors of STAT3 with anti-tumor activity |
US10226439B2 (en) | 2006-05-19 | 2019-03-12 | H. Lee Moffitt Cancer Center And Research Institute, Inc. | Small molecule inhibitors of STAT3 with anti-tumor activity |
US10806712B2 (en) | 2006-05-19 | 2020-10-20 | H. Lee Moffitt Cancer Center And Research Institute, Inc. | Small molecule inhibitors of STAT3 with anti-tumor activity |
Also Published As
Publication number | Publication date |
---|---|
EP0931085A1 (en) | 1999-07-28 |
AU4313997A (en) | 1998-04-14 |
GB9619768D0 (en) | 1996-11-06 |
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