US20090111730A1 - Polypeptide protracting tags - Google Patents

Polypeptide protracting tags Download PDF

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US20090111730A1
US20090111730A1 US11/631,889 US63188905A US2009111730A1 US 20090111730 A1 US20090111730 A1 US 20090111730A1 US 63188905 A US63188905 A US 63188905A US 2009111730 A1 US2009111730 A1 US 2009111730A1
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glp
xaa
ethoxy
lys
peptide
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Florencio Zaragoza Dorwald
Christine Bruun Schiodt
Thomas Kruse Hansen
Kjeld Madsen
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Novo Nordisk AS
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    • A—HUMAN NECESSITIES
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    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
    • A61K31/4164—1,3-Diazoles
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/575—Hormones
    • C07K14/61—Growth hormone [GH], i.e. somatotropin
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    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00—Medicinal preparations containing peptides
    • A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • A61K38/22—Hormones
    • A61K38/27—Growth hormone [GH], i.e. somatotropin
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    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
    • A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
    • A61K47/54—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic compound
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    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
    • A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
    • A61K47/54—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic compound
    • A61K47/545—Heterocyclic compounds
    • A—HUMAN NECESSITIES
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    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
    • A61P1/04—Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A—HUMAN NECESSITIES
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    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
    • A—HUMAN NECESSITIES
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    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00—Drugs for disorders of the metabolism
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00—Drugs for disorders of the metabolism
    • A61P3/04—Anorexiants; Antiobesity agents
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    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00—Drugs for disorders of the metabolism
    • A61P3/06—Antihyperlipidemics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00—Drugs for disorders of the metabolism
    • A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00—Drugs for disorders of the metabolism
    • A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
    • A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P5/00—Drugs for disorders of the endocrine system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • A61P9/12—Antihypertensives
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D257/00—Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms
    • C07D257/02—Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms not condensed with other rings
    • C07D257/04—Five-membered rings
    • 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
    • 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
    • C07K1/107—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length by chemical modification of precursor peptides
    • C07K1/113—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length by chemical modification of precursor peptides without change of the primary structure

Definitions

  • the present invention relates to compounds comprising a heterocyclic carboxylic acid bioisostere, methods for preparing the compounds and the medical applications of such compounds.
  • Endogenous peptides are, however, not always suitable as drug candidates because these peptides often have half-lives of few minutes due to rapid degradation by peptidases and/or due to renal filtration and excretion in the urine.
  • the half-life of polypeptides in human plasma varies strongly (from a few minutes to more than one week).
  • the half-life of small molecule drugs is also highly variable. The reason for this strong variability of plasma half-lives of peptides, proteins, or other compounds is, however, not well understood.
  • Serum albumin has a half-life of more than one week, and one approach to increasing the plasma half-life of peptides has been to derivatised the peptides with a chemical entity that binds to serum albumin.
  • a method for increasing the plasma half-life of a molecule comprising covalently linking this molecule to a heterocyclic carboxylic acid bioisostere.
  • the present invention also relates to a method for increasing the plasma half-life of a molecule, comprising covalently linking this molecule to a 1H-tetrazole.
  • G, X, and Y independently represent
  • G, X, and Y independently represent
  • the present invention also provides a compound according to formula (I), wherein G, X and Y are all a bond.
  • the present invention also provides a compound according to formula (I), wherein G, X and Y are ail selected from —(CH 2 ) 1-10 —.
  • the present invention also provides a compound according to formula (I), wherein t is 1.
  • polyradical means a molecule or molecular moiety with more than one unshared electron.
  • a polyradical according to this definition may be used to covalently link two or more (mono-)radicals together.
  • small molecule drug means a therapeutic agent with a molecular weight ⁇ 1500 g/mol.
  • therapeutic agent means a peptide, protein, small molecule drug, or any other type of compound, able to elicit a biological response.
  • plasma half-life means the time required for the concentration of a given compound present in the plasma of a living mammal, such as a human, to decrease to one half of its original concentration.
  • analog refers to a polypeptide in which less than 30% of the amino acids of the original polypeptide have been removed or replaced by other amino acids (including stereoisomeric, unnatural or chemically modified amino acids) or have been chemically modified, for instance by acylation or alkylation of the side chain.
  • analog also refers to polypeptides in which the N-terminal amino group has been removed, alkylated with lower alkyl, or acylated with lower alkanoic, arylalkanoic, heteroarylalkanoic, or benzoic acids.
  • analog also includes polypeptides in which the C-terminal carboxyl group has been removed or converted to an amide by condensation with ammonia, lower alkyl amines, lower dialkyl amines, aziridine, azetidine, pyrrolidine, piperidine, or azepine.
  • analog also includes polypeptides in which the disulfide functionalities between two or more cystein groups have been reduced or the connectivity between two or more cystein groups has been modified.
  • derivative as used herein in relation to a peptide means a chemically modified peptide or an analogue thereof, wherein at least one substituent is not present in the unmodified peptide or an analogue thereof, i.e. a peptide which has been covalently modified. Typical modifications are amides, carbohydrates, alkyl groups, acyl groups, esters and the like.
  • An example of a derivative of GLP-1(7-37) is Arg 34 Lys 26 (N ⁇ -( ⁇ -Glu(N ⁇ -hexadecanoyl)))-GLP-1(7-37).
  • unnatural amino acid refers to any compound comprising at least one primary or secondary amino group and at least one carboxyl group, without being L-alanine, L-arginine, L-asparagine, L-aspartic acid, L-cysteine, L-glutamine, L-glutamic acid, L-glycine, L-histidine, L-isoleucine, L-leucine, L-lysine, L-methionine, L-phenylalanine, proline, L-serine, L-threonine, L-tryptophan, L-tyrosine, or L-valine.
  • GLP-1(7-37) refers to a peptide with the amino acid sequence HAEGTFTSDVSSYLEGQAAKEFIAWLVKGRG (SEQ ID No. 1).
  • GLP-1 peptide as used herein means GLP-1(7-37), a GLP-1 analog, a GLP-1 derivative or a derivative of a GLP-1 analog. In one embodiment the GLP-1 peptide is an insulinotropic agent.
  • exendin-4(1-39) refers to a peptide with the amino acid sequence HGEGTFTSDLSKQMEEEAVRLFIEWLKNGGPSSGAPPPS (SEQ ID No. 2).
  • insulinotropic agent means a compound which is an agonist of the human GLP-1 receptor, i.e. a compound which stimulates the formation of cAMP in a suitable medium containing the human GLP-1 receptor.
  • the potency of an insulinotropic agent is determined by calculating the EC 50 value from the dose-response curve as described below.
  • Baby hamster kidney (BHK) cells expressing the cloned human GLP-1 receptor (BHK-467-12A) were grown in DMEM media with the addition of 100 IU/mL penicillin, 100 ⁇ L/mL streptomycin, 10% fetal calf serum and 1 mg/mL Geneticin G-418 (Life Technologies).
  • Plasma membranes were prepared by homogenisation in buffer (10 mM Tris-HCl, 30 mM NaCl and 1 mM dithiothreitol, pH 7.4, containing, in addition, 5 mg/L leupeptin (Sigma, St.
  • the functional receptor assay was carried out by measuring cAMP as a response to stimulation by the insulinotropic agent. Incubation were carried out in 96-well microtiter plates in a total volume of 140 ⁇ L and with the following final concentrations: 50 mM Tris-HCl, 1 mM EGTA, 1.5 mM MgSO 4 , 1.7 mM ATP, 20 mM GTP, 2 mM 3-isobutyl-1-methylxanthine (IBMX), 0.01% Tween-20, pH 7.4. Compounds to be tested for agonist activity were dissolved and diluted in buffer.
  • GTP was freshly prepared for each experiment: 2.5 ⁇ g of membrane was added to each well and the mixture was incubated for 90 min at room temperature in the dark with shaking. The reaction was stopped by the addition of 25 ⁇ L of 0.5 M HCl. Formed cAMP was measured by a scintillation proximity assay (RPA 542, Amersham, UK). Dose-response curves were plotted for the individual compounds and EC 50 values calculated using GraphPad Prism software.
  • DPP-IV protected as used herein referring to a polypeptide means a polypeptide which has been chemically modified in order to render said compound resistant to the plasma peptidase dipeptidyl aminopeptidase-4 (DPP-IV).
  • DPP-IV enzyme in plasma is known to be involved in the degradation of several peptide hormones, e.g. GLP-1, GLP-2, Exendin-4 etc.
  • Peptides and their degradation products may be monitored by their absorbance at 220 nm (peptide bonds) or 280 nm (aromatic amino acids), and are quantified by integration of their peak areas related to those of standards.
  • the rate of hydrolysis of a peptide by dipeptidyl aminopeptidase IV is estimated at incubation times which result in less than 10% of the peptide being hydrolysed.
  • factor VII refers to the human factor VII of the blood clotting cascade.
  • bioisostere refers to a molecular fragment capable of mimicking the biological properties of another molecular fragment.
  • Typical bioisosteres of carboxylic acids include tetrazoles, phenols, N-acylsulfonamides, or other compounds with an acidic NH— or OH— group.
  • halogen means F, Cl, Br or I.
  • alkyl as used herein is intended to mean straight, branched, or cyclic C 1 -C 10 alkyl.
  • lower alkyl refers to C 1 -C 6 alkyl.
  • aryl as used herein is intended to include carbocyclic aromatic ring systems such as phenyl, biphenylyl, naphthyl, anthracenyl, phenanthrenyl, fluorenyl, indenyl, pentalenyl, azulenyl and the like.
  • Aryl is also intended to include the partially hydrogenated derivatives of the carbocyclic systems enumerated above. Non-limiting examples of such partially hydrogenated derivatives are 1,2,3,4-tetrahydronaphthyl, 1,4-dihydronaphthyl and the like.
  • arylene as used herein is intended to include arene-derived diradicals such as 1,2-phenylene, 1,3-phenylene, 1,4-phenylene, 1,2-naphthylene, 1,4-naphthylene, 4,4′-biphenylene, 4,4′′-terphenylene, 4,4′′′-quaterphenylene, and the like.
  • heteroarylene as used herein is intended to include heteroarene-derived diradicals, such as 1,2,4-pyrazol-2,5-diyl, imidazol-1,2-diyl, thiazol-2,4-diyl, and the like, as well as combinations of arylene with heteroarylene diradicals, such as (4-phenylimidazole)-4,1′-diyl, (3,5-diphenyl-1,2,4-oxadiazole)-4,4′′-diyl, and the like.
  • aryloxy refers to the radical —O-aryl where aryl is as defined above.
  • Non-limiting examples are phenoxy, naphthoxy, anthracenyloxy, phenanthrenyloxy, fluorenyloxy, indenyloxy and the like.
  • heteroaryl as used herein is intended to include heterocyclic aromatic ring systems containing one or more heteroatoms selected from nitrogen, oxygen and sulfur such as furyl, thienyl, pyrrolyl, oxazolyl, thiazolyl, imidazolyl, isoxazolyl, isothiazolyl, 1,2,3-triazolyl, 1,2,4-triazolyl, pyranyl, pyridyl, pyridazinyl, pyrimidinyl, pyrazinyl, 1,2,3-triazinyl, 1,2,4-triazinyl, 1,3,5-triazinyl, 1,2,3-oxadiazolyl, 1,2,4-oxadiazolyl, 1,2,5-oxadiazolyl, 1,3,4-oxadiazolyl, 1,2,3-thiadiazolyl, 1,2,4-thiadiazolyl, 1,2,5-thiadiazolyl, 1,3,4-thiadiazolyl, 1,2,3-
  • Heteroaryl is also intended to include the partially hydrogenated derivatives of the heterocyclic systems enumerated above.
  • Non-limiting examples of such partially hydrogenated derivatives are 2,3-dihydrobenzofuranyl, pyrrolinyl, pyrazolinyl, indanyl, indolinyl, oxazolidinyl, oxazolinyl, oxazepinyl and the like. Certain of the above defined terms may occur more than once in the structural formulae, and upon such occurrence each term shall be defined independently of the other.
  • the present invention provides a method for increasing the plasma half-life of a molecule, comprising covalently linking this molecule to a heterocyclic carboxylic acid bioisostere.
  • the present invention provides a method for increasing the plasma half-life of a molecule, comprising covalently linking this molecule to a 1H-tetrazole.
  • the present invention provides a method for increasing the plasma half-life of a molecule, comprising converting said molecule into a compound of the general formula (I):
  • G, X, and Y independently represent
  • Tetrazoles are slightly more lipophilic than carboxylic acids, but are resistant to many of the metabolic degradation pathways which befall carboxylic acids. Because tetrazoles cannot act as acylating reagents no protective group is required when acylating a protein with an ⁇ -(tetrazol-5-yl)carboxylic acid.
  • an optional spacer i.e. a divalent or polyvalent molecular fragment able to covalently connect one or several tetrazoles to the molecule.
  • This divalent or polyvalent molecular fragment may also have an influence on the biological properties of the conjugate compound-tetrazole(s), and structural modifications of this spacer may be used to adjust and improve the properties of the conjugate.
  • This spacer may be a combination of one or several different structural elements selected from but not limited to alkylene chains, partially or fully fluorinated alkylene chains, arylenes, heteroarylenes, oligo(ethylene glycol), amide bonds, lysine, short peptides, short oligoamides, and other, similar fragments.
  • polypeptides contain amino groups (e.g. the N-terminal amino group or lysine-side-chain amino groups), which can be acylated by a suitable acylating reagent, such as a carboxylic acid in the presence of a coupling reagent, a carboxylic acid O-hydroxysuccinimidyl ester, hydroxybenzotriazole esters, carboxylic acid anhydrides, carboxylic acid halides, carboxylic acid azides, nitrophenyl esters, mixed carboxylic carbonic anhydrides, mixed carboxylic sulfonic anhydrides, imidazolides, and the like.
  • a suitable acylating reagent such as a carboxylic acid in the presence of a coupling reagent, a carboxylic acid O-hydroxysuccinimidyl ester, hydroxybenzotriazole esters, carboxylic acid anhydrides, carboxylic acid halides, carboxylic acid azides, nitrophenyl esters
  • amino-group bearing polypeptides may be derivatized by conversion into a carbamate by treatment with an alkyl haloformiate, an O-succinimidylcarbonate, an alkyl azidoformiate, or a related reagent.
  • amino-group bearing polypeptides may be derivatized by conversion into a urea by treatment with an isocyanate, a carbamoyl halide, a nitrophenyl carbamate, or a related reagent.
  • amino-group bearing polypeptides may be derivatized by conversion into a sulfonamide by treatment with a sulfonyl halide or sulfonyl imidazolide.
  • polypeptides contain thiol groups, which can be alkylated by treatment with a suitable alkylating reagent, such as an alkyl halide, an alkyl sulfonate, an N-alkylmaleimide, an acrylamide, or a related alkylating reagent, to covalently bind the tetrazole-bearing fragment to the polypeptide.
  • a suitable alkylating reagent such as an alkyl halide, an alkyl sulfonate, an N-alkylmaleimide, an acrylamide, or a related alkylating reagent
  • thiol groups may also be arylated by treatment with a suitable arylating reagent, such as an aryl halide, an aryl iodonium salt, an aryidiazonium salt or a similar reagent.
  • Polypeptides with N-terminal serine or a related functional group can be oxidized by treatment with periodate to an aldehyde.
  • This aldehyde reacts with O-alkylhydroxylamines to yield oximes, and may therefore be used to attach an O-alkylhydroxylamine-containing tetrazole to the polypeptide.
  • aldehyde formed by oxidation of N-terminal serine also reacts with 2-aminoethylthiols (HS—C—C—NH) to yield thiazolidines, or with hydrazines to yield hydrazones, and these reactions may also be used for the attachment of a tetrazole-bearing fragment to a polypeptide.
  • Aldehydes also react with C,H-acidic compounds such as 1,3-diketones, 3-oxobutyramides, malonodinitriles, barbituric acid derivatives, malonic acid derivatives, and the like to yield alcohols (aldol addition) or alkenes (Knoevenagel condensation). These reactions may also be used to attach tetrazoles to polypeptides.
  • Enzymes enable the selective derivatization of polypeptides.
  • carboxypeptidases can be used to form amides from amines and the C-terminal carboxylic acid group of a polypeptide.
  • Transglutaminases may be used to form new amides from amines and the side chain of glutamine. If these enzymatic reactions are performed with a tetrazole-bearing amine, compounds as claimed in this invention will result. Alternatively, these enzymatic reactions may also be conducted with an amine which contains a functional group which enables a selective covalent attachment of a tetrazole-bearing fragment in a second operation.
  • Such functional groups may be aldehydes, ketones, hydroxylamines, alkoxylamines, hydrazines, thiols, azides, 2-aminoethylthiols, 3-aminopropylthiols, 2-hydroxyethylthiols, 3-hydroxypropylthiols, alkynes, alkenes, nitriles, C,H-acidic compounds, or other functional groups which enable the selective covalent attachment of a tetrazole-bearing fragment. Treatment of an amine containing one or several of these functional groups will yield a polypeptide, which can be selectively derivatized.
  • polypeptides may contain one or several tyrosines. These may be selectively derivatized by azocoupling with an aryidiazonium salt. This technique may also be used to prepare compound according to the present invention, by treating said tyrosine-containing polypeptide with a tetrazole-containing aryldiazonium salt.
  • the present invention provides a compound of the general formula (I):
  • G, X, and Y independently represent
  • the invention provides a compound according to formula (I), wherein G, X and Y are all a bond.
  • the invention provides a compound according to formula (I), wherein G, X and Y are all selected from —(CH 2 ) 1-10 —.
  • the invention provides a compound according to formula (I), wherein is 1.
  • the invention provides a compound according to formula (I), wherein the molecule is covalently linked to R via the ⁇ -amino group of a lysine residue.
  • the invention provides a compound according to formula (I), wherein the molecule is covalently linked to R via the thiol group of a cysteine residue.
  • the invention provides a compound according to formula (I), wherein the molecule is a therapeutic agent.
  • the invention provides a compound according to formula (I), wherein the therapeutic agent is a biopolymer.
  • the invention provides a compound according to formula (I), wherein the therapeutic agent is a polypeptide.
  • the invention provides a compound according to formula (I), wherein the therapeutic agent is a small molecule drug.
  • the present invention provides a compound according to formula (I), wherein the molecule is a polypeptide which is an insulinotropic peptide.
  • the invention provides a compound according to formula (I), wherein the molecule is a polypeptide which is GLP-1(7-37) or a variant thereof.
  • the invention provides a compound according to formula (I), wherein the molecule is a polypeptide which is GLP-1(7-37) or an analog thereof.
  • the invention provides a compound according to formula (I), wherein the molecule is a polypeptide comprising the amino acid sequence of the formula (IV):
  • Xaa 7 is L-histidine, D-histidine, desamino-histidine, 2-amino-3-(2-aminoimidazol-4-yl)propionic acid, ⁇ -hydroxy-histidine, homohistidine, N ⁇ -acetyl-histidine, ⁇ -fluoromethyl-histidine, ⁇ -methyl-histidine, 3-pyridylalanine, 2-pyridylalanine or 4-pyridylalanine;
  • Xaa 8 is Ala, Gly, Val, Leu, Ile, Lys, Aib, 1-aminocyclopropanecarboxylic acid, 1-aminocyclobutanecarboxylic acid, 1-aminocyclopentanecarboxylic acid, 1-aminocyclohexanecarboxylic acid, 1-aminocycloheptanecarboxylic acid, or 1-aminocyclooctanecarboxylic acid;
  • Xaa 16 is Val or Leu
  • Xaa 18 is Ser, Lys or Arg
  • Xaa 19 is Tyr or Gln
  • Xaa 20 is Leu or Met
  • Xaa 22 is Gly, Glu or Aib;
  • Xaa 23 is Gln, Glu, Lys or Arg;
  • Xaa 25 is Ala or Val
  • Xaa 26 is Lys, Glu or Arg
  • Xaa 27 is Glu or Leu
  • Xaa 30 is Ala, Glu or Arg
  • Xaa 33 is Val or Lys
  • Xaa 34 is Lys, Glu, Asn or Arg;
  • Xaa 35 is Gly or Aib
  • Xaa 36 is Arg, Gly or Lys
  • the invention provides a compound according to formula (I), wherein the molecule is a polypeptide comprising the amino acid sequence of formula (V):
  • Xaa 7 is L-histidine, D-histidine, desamino-histidine, 2-aminohistidine, ⁇ -hydroxy-histidine, homohistidine, N ⁇ -acetyl-histidine, ⁇ -fluoromethyl-histidine, ⁇ -methyl-histidine, 3-pyridylalanine, 2-pyridylalanine or 4-pyridylalanine;
  • Xaa 8 is Ala, Gly, Val, Leu, Ile, Lys, Aib, 1-aminocyclopropanecarboxylic acid, 1-aminocyclobutanecarboxylic acid, 1-aminocyclopentanecarboxylic acid, 1-aminocyclohexanecarboxylic acid, 1-aminocycloheptanecarboxylic acid, or 1-aminocyclooctanecarboxylic acid;
  • Xaa 18 is Ser, Lys or Arg
  • Xaa 22 is Gly, Glu or Aib;
  • Xaa 23 is Gln, Glu, Lys or Arg;
  • Xaa 26 is Lys, Glu or Arg
  • Xaa 30 is Ala, Glu or Arg
  • Xaa 34 is Lys, Glu or Arg
  • Xaa 35 is Gly or Aib
  • Xaa 36 is Arg or Lys
  • Xaa 37 is Gly, Ala, Glu or Lys
  • Xaa 38 is Lys, amide or is absent.
  • the invention provides a compound according to formula (I), wherein the molecule is a polypeptide selected from GLP-1(7-35), GLP-1(7-36), GLP-1(7-36)-amide, GLP-1(7-37), GLP-1(7-38), GLP-1(7-39), GLP-1(7-40), GLP-1(7-41) or an analog thereof.
  • the invention provides a compound according to formula (I), wherein the molecule is a polypeptide comprising no more than fifteen amino acid residues which have been exchanged, added or deleted as compared to GLP-1(7-37) (SEQ ID No. 1), or no more than ten amino acid residues which have been exchanged, added or deleted as compared to GLP-1(7-37) (SEQ ID No. 1).
  • the invention provides a compound according to formula (I), wherein the molecule is a polypeptide comprising no more than six amino acid residues which have been exchanged, added or deleted as compared to GLP-1(7-37) (SEQ ID No. 1).
  • the invention provides a compound according to formula (I), wherein the molecule is a polypeptide comprising no more than 4 amino acid residues which are not encoded by the genetic code.
  • the invention provides a compound according to formula (I), wherein the molecule is a polypeptide which is a DPP-IV protected insulinotropic peptide.
  • the invention provides a compound according to formula (I), wherein the molecule is a polypeptide comprising an Aib residue in position 8.
  • the invention provides a compound according to formula (I), wherein the molecule is a GLP-1(7-37) analog wherein the amino acid residue in position 7 of said polypeptide is selected from the group consisting of D-histidine, desamino-histidine, 2-amino-3-(2-aminoimidazol-4-yl)propionic acid, p-hydroxy-histidine, homohistidine, N ⁇ -acetyl-histidine, ⁇ -fluoromethyl-histidine, ⁇ -methyl-histidine, 3-pyridylalanine, 2-pyridylalanine and 4-pyridylalanine.
  • the invention provides a compound according to formula (I), wherein the molecule is a GLP-1(7-37) analog selected from the group consisting of Arg 34 GLP-1(7-37), Lys 38 Arg 26,34 GLP-1(7-38), Lys 38 Arg 26,34 GLP-1(7-38)-OH, Lys 36 Arg 26,34 GLP-1(7-36), Aib 8,22,35 GLP-1(7-37), Aib 8,35 GLP-1(7-37), Aib 8,22 GLP-1(7-37), Aib 8,22,35 Arg 26,34 Lys 38 GLP-1(7-38), Aib 8,35 Arg 26,34 Lys 38 GLP-1(7-38), Aib 8,35 Arg 26,34 Lys 38 GLP-1(7-38), Aib 8,22 Arg 26,34 Lys 38 GLP-1(7-38), Aib 8,22 Arg 26,34 Lys 38 GLP-1(7-38), Aib 8,22,35 Arg 26,34 Lys 38 GLP
  • the invention provides a compound according to formula (I), wherein the molecule is GLP-1(7-37) or an analog thereof which is attached to R via the amino acid residue in position 23, 26, 34, 36 or 38 relative to the amino acid sequence SEQ ID No:1.
  • the present invention provides a compound according to formula (I), wherein the molecule is exendin-4(1-39) or an analog thereof.
  • the invention provides a compound according to formula (I), wherein the molecule is an exendin-4 analog comprising no more than twelve amino acid residues which have been exchanged, added or deleted as compared to exendin-4(1-39) (SEQ ID No. 2), or no more than eight amino acid residues which have been exchanged, added or deleted as compared to exendin-4(1-39) (SEQ ID No. 2).
  • the invention provides a compound according to formula (I), wherein the molecule is ZP-10, i.e. HGEGTFTSDLSKQMEEEAVRLFIEWLKNGGPSSGAPPSKKKKKK-amide (SEQ ID No. 5).
  • the invention provides a compound according to formula (I), wherein said compound is selected from the group consisting of N- ⁇ -26-(16-[5-tetrazolyl]hexadecanoyl)Arg 34 GLP-1-(7-37), Gly 8 ,Arg 26,34 GLP-1(7-37)Lys(16-(5-tetrazolyl)hexadecanoyl), Gly 8 ,Arg 26,34 GLP-1(7-37)Lys ⁇ 4-[N-(16- ⁇ 5-tetrazolyl ⁇ hexadecanoyl)sulfamoyl]butyryl ⁇ , N- ⁇ -26- ⁇ 4-[N-(16- ⁇ 5-tetrazolyl ⁇ hexadecanoyl)sulfamoyl]butyryl ⁇ Arg 34 GLP-1(7-37), N- ⁇ -37-(2-(2-(2-(2-(16-(tetrazol-5-yl)(hexadecan
  • the present invention provides a compound according to formula (I), wherein the molecule is human growth hormone or an analog thereof.
  • the present invention provides a compound according to formula (I), wherein the molecule is human insulin or an analog thereof.
  • the present invention provides a compound according to formula (I), wherein the molecule is factor VII or an analog thereof.
  • the present invention provides a compound according to formula (I), wherein the molecule is parathyroid hormone or an analog thereof.
  • the present invention provides a compound according to formula (I), wherein the molecule is human follicle stimulating hormone or an analog thereof.
  • the present invention provides a compound according to formula (I), wherein the molecule has a molar weight of less than 100 kDa, less than 50 kDa, or less than 10 kDa.
  • the present invention provides a compound according to formula (I), wherein the molecule is selected from the group consisting of a growth factor such as platelet-derived growth factor (PDGF), transforming growth factor ⁇ (TGF- ⁇ ), transforming growth factor ⁇ (TGF- ⁇ ), epidermal growth factor (EGF), vascular endothelial growth factor (VEGF), a somatomedin such as insulin growth factor I (IGF-I), insulin growth factor II (IFG-II), erythropoietin (EPO), thrombopoietin (TPO) or angiopoietin, interferon, pro-urokinase, urokinase, tissue plasminogen activator (t-PA), plasminogen activator inhibitor 1, plasminogen activator inhibitor 2, von Willebrandt factor, a cytokine, e.g.
  • a growth factor such as platelet-derived growth factor (PDGF), transforming growth factor ⁇ (TGF- ⁇ ), transforming
  • interleukin such as interleukin (IL) 1, IL-1Ra, IL-2, IL-4, IL-5, IL-6, IL-9, IL-11, IL-12, IL-13, IL-15, IL-16, IL-17, IL-18, IL-20 or IL-21
  • IL interleukin
  • CFS colony stimulating factor
  • stem cell factor such as GM-CSF
  • tumor necrosis factor such as TNF- ⁇ , lymphotoxin- ⁇ , lymphotoxin- ⁇ , CD40L, or CD30L
  • protease inhibitor e.g.
  • aprotinin an enzyme such as superoxide dismutase, asparaginase, arginase, arginine deaminase, adenosine deaminase, ribonuclease, catalase, uricase, bilirubin oxidase, trypsin, papain, alkaline phosphatase, ⁇ -glucoronidase, purine nucleoside phosphorylase or batroxobin, an opioid, e.g. endorphins, enkephalins or non-natural opioids, a hormone or neuropeptide, e.g.
  • an opioid e.g. endorphins, enkephalins or non-natural opioids
  • a hormone or neuropeptide e.g.
  • calcitonin glucagon, gastrins, adrenocorticotropic hormone (ACTH), cholecystokinins, lutenizing hormone, gonadotropin-releasing hormone, chorionic gonadotropin, corticotrophin-releasing factor, vasopressin, oxytocin, antidiuretic hormones, thyroid-stimulating hormone, thyrotropin-releasing hormone, relaxin, prolactin, peptide YY, neuropeptide Y, pancreastic polypeptide, leptin, CART (cocaine and amphetamine regulated transcript), a CART related peptide, perilipin, melanocortins (melanocyte-stimulating hormones) such as MC-4, melanin-concentrating hormones, natriuretic peptides, adrenomedullin, endothelin, secretin, amylin, vasoactive intestinal peptide (VIP), pituary a
  • the present invention provides a compound of the general formula (II)
  • G, X, Y, Z, A, Q, and R represent groups as defined in claim 3
  • Lg is a leaving group, such as Cl, Br, I, OH, —OSO 2 Me, —OSO 2 CF 3 , —OTs, —SMe 2 + , —OSu, —OBt, —OAt, —OPh, or —O(4-NO 2 )Ph.
  • the present invention provides the use of a compound according to formula (II) for the synthesis of a compound according to formula (I).
  • the therapeutic polypeptides can be produced by classical peptide synthesis, e.g. solid phase peptide synthesis using t-Boc or F-Moc chemistry or other well established techniques., see e.g. Green and Wuts, “Protecting Groups in Organic Synthesis”, Jogn Wiley & Sons, 1999.
  • the therapeutic polypeptides can also be produced by a method which comprises culturing a host cell containing a DNA sequence encoding the polypeptide and capable of expressing the polypeptide in a suitable nutrient medium under conditions permitting the expression of the peptide, after which the resulting peptide is recovered from the culture.
  • the medium used to culture the cells may be any conventional medium suitable for growing the host cells, such as minimal or complex media containing appropriate supplements. Suitable media are available from commercial suppliers or may be prepared according to published recipes (e.g. in catalogues of the American Type Culture Collection).
  • the peptide produced by the cells may then be recovered from the culture medium by conventional procedures including separating the host cells from the medium by centrifugation or filtration. For extracellular products the proteinaceous components of the supernatant are isolated by filtration, column chromatography or precipitation, e.g. microfiltation, ultrafiltration, isoelectric precipitation, purification by a variety of chromatographic procedures, e.g.
  • ion exchange chromatography hydrophobic interaction chromatography, gel filtration chromatography, affinity chromatography, or the like, dependent on the type of polypeptide in question.
  • the cells isolated from the culture medium are disintegrated or permeabilised and extracted to recover the product polypeptide or precursor thereof.
  • the DNA sequence encoding the therapeutic polypeptide may suitably be of genomic or cDNA origin, for instance obtained by preparing a genomic or cDNA library and screening for DNA sequences coding for all or part of the peptide by hybridisation using synthetic oligonucleotide probes in accordance with standard techniques (see, for example, Sambrook, J, Fritsch, EF and Maniatis, T, Molecular Cloning: A Laboratory Manual, Cold Spring Harbor Laboratory Press, New York, 1989).
  • the DNA sequence encoding the polypeptide may also be prepared synthetically by established standard methods, e.g.
  • the DNA sequence may also be prepared by polymerase chain reaction using specific primers, for instance as described in U.S. Pat. No. 4,683,202 or Saiki et al., Science 239 (1988), 487-491.
  • the DNA sequence may be inserted into any vector which may conveniently be subjected to recombinant DNA procedures, and the choice of vector will often depend on the host cell into which it is to be introduced.
  • the vector may be an autonomously replicating vector, i.e. a vector which exists as an extrachromosomal entity, the replication of which is independent of chromosomal replication, e.g. a plasmid.
  • the vector may be one which, when introduced into a host cell, is integrated into the host cell genome and replicated together with the chromosome(s) into which it has been integrated.
  • the vector is preferably an expression vector in which the DNA sequence encoding the polypeptide is operably linked to additional segments required for transcription of the DNA, such as a promoter.
  • the promoter may be any DNA sequence which shows transcriptional activity in the host cell of choice and may be derived from genes encoding proteins either homologous or heterologous to the host cell. Examples of suitable promoters for directing the transcription of the DNA encoding the peptide of the invention in a variety of host cells are well known in the art, cf. for instance Sambrook et al., supra.
  • the DNA sequence encoding the polypeptide may also, if necessary, be operably connected to a suitable terminator, polyadenylation signals, transcriptional enhancer sequences, and translational enhancer sequences.
  • the recombinant vector of the invention may further comprise a DNA sequence enabling the vector to replicate in the host cell in question.
  • the vector may also comprise a selectable marker, e.g. a gene the product of which complements a defect in the host cell or one which confers resistance to a drug, e.g. ampicillin, kanamycin, tetracyclin, chloramphenicol, neomycin, hygromycin or methotrexate.
  • a selectable marker e.g. a gene the product of which complements a defect in the host cell or one which confers resistance to a drug, e.g. ampicillin, kanamycin, tetracyclin, chloramphenicol, neomycin, hygromycin or methotrexate.
  • the selectable marker preferably is not antibiotic resistance, e.g. antibiotic resistance genes in the vector are preferably excised when the vector is used for large scale manufacture. Methods for eliminating antibiotic resistance genes from vectors are known in the art, see e.g. U.S. Pat. No. 6,358,705 which is incorporated herein by reference.
  • a secretory signal sequence (also known as a leader sequence, prepro sequence or pre sequence) may be provided in the recombinant vector.
  • the secretory signal sequence is joined to the DNA sequence encoding the peptide in the correct reading frame.
  • Secretory signal sequences are commonly positioned 5′ to the DNA sequence encoding the peptide.
  • the secretory signal sequence may be that normally associated with the peptide or may be from a gene encoding another secreted protein.
  • the host cell into which the DNA sequence or the recombinant vector is introduced may be any cell which is capable of producing the present peptide and includes bacteria, yeast, fungi and higher eukaryotic cells.
  • suitable host cells well known and used in the art are, without limitation, E. coli, Saccharomyces cerevisiae , or mammalian BHK or CHO cell lines.
  • compositions containing a compound according to the present invention may be prepared by conventional techniques, e.g. as described in Remington's Pharmaceutical Sciences, 1985 or in Remington: The Science and Practice of Pharmacy, 19 th edition, 1995.
  • One object of the present invention is to provide a pharmaceutical formulation comprising a compound according to the present invention which is present in a concentration from about 0.1 mg/ml to about 25 mg/ml, and wherein said formulation has a pH from 2.0 to 10.0.
  • the formulation may further comprise a buffer system, preservative(s), isotonicity agent(s), chelating agent(s), stabilizers and surfactants.
  • the pharmaceutical formulation is an aqueous formulation, i.e. formulation comprising water. Such formulation is typically a solution or a suspension.
  • the pharmaceutical formulation is an aqueous solution.
  • aqueous formulation is defined as a formulation comprising at least 50% w/w water.
  • aqueous solution is defined as a solution comprising at least 50% w/w water
  • aqueous suspension is defined as a suspension comprising at least 50% w/w water.
  • the pharmaceutical formulation is a freeze-dried formulation, whereto the physician or the patient adds solvents and/or diluents prior to use.
  • the pharmaceutical formulation is a dried formulation (e.g. freeze-dried or spray-dried) ready for use without any prior dissolution.
  • the invention in a further aspect relates to a pharmaceutical formulation
  • a pharmaceutical formulation comprising an aqueous solution of a compound according to the present invention, and a buffer, wherein said compound is present in a concentration from 0.1 mg/ml or above, and wherein said formulation has a pH from about 2.0 to about 10.0.
  • the invention in a further aspect relates to a pharmaceutical formulation
  • a pharmaceutical formulation comprising an aqueous solution of a compound according to the present invention, and a buffer, wherein said compound is present in a concentration from about 1 mg/ml or above, and wherein said formulation has a pH from about 7.0 to about 8.5.
  • the pH of the formulation is selected from the list consisting of 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 5.0, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, 6.0, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7.0, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, 8.0, 8.1, 8.2, 8.3, 8.4, 8.5, 8.6, 8.7, 8.8, 8.9, 9.0, 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 9.7, 9.8, 9.9, and 10.0.
  • the buffer is selected from the group consisting of sodium acetate, sodium carbonate, citrate, glycylglycine, histidine, glycine, lysine, arginin, sodium dihydrogen phosphate, disodium hydrogen phosphate, sodium phosphate, and tris(hydroxymethyl)-aminomethan, bicine, tricine, malic acid, succinate, maleic acid, fumaric acid, tartaric acid, aspartic acid or mixtures thereof.
  • Each one of these specific buffers constitutes an alternative embodiment of the invention.
  • the formulation further comprises a pharmaceutically acceptable preservative.
  • the preservative is selected from the group consisting of phenol, o-cresol, m-cresol, p-cresol, methyl p-hydroxybenzoate, propyl p-hydroxybenzoate, 2-phenoxyethanol, butyl p-hydroxybenzoate, 2-phenylethanol, benzyl alcohol, chlorobutanol, and thiomerosal, bronopol, benzoic acid, imidurea, chlorohexidine, sodium dehydroacetate, chlorocresol, ethyl p-hydroxybenzoate, benzethonium chloride, chlorphenesine (3p-chlorphenoxypropane-1,2-diol) or mixtures thereof.
  • the preservative is present in a concentration from 0.1 mg/ml to 20 mg/ml. In a further embodiment of the invention the preservative is present in a concentration from 0.1 mg/ml to 5 mg/ml. In a further embodiment of the invention the preservative is present in a concentration from 5 mg/ml to 10 mg/ml. In a further embodiment of the invention the preservative is present in a concentration from 10 mg/ml to 20 mg/ml. Each one of these specific preservatives constitutes an alternative embodiment of the invention.
  • the use of a preservative in pharmaceutical compositions is well-known to the skilled person. For convenience reference is made to Remington: The Science and Practice of Pharmacy, 19 th edition, 1995.
  • the formulation further comprises an isotonic agent.
  • the isotonic agent is selected from the group consisting of a salt (e.g. sodium chloride), a sugar or sugar alcohol, an amino acid (e.g. L-glycine, L-histidine, arginine, lysine, isoleucine, aspartic acid, tryptophan, threonine),
  • alditol e.g. glycerol (glycerine), 1,2-propanediol (propyleneglycol), 1,3-propanediol, 1,3-butanediol
  • polyethyleneglycol e.g. PEG400
  • Any sugar such as mono-, di-, or polysaccharides, or water-soluble glucans, including for example fructose, glucose, mannose, sorbose, xylose, maltose, lactose, sucrose, trehalose, dextran, pullulan, dextrin, cyclodextrin, soluble starch, hydroxyethyl starch and carboxymethylcellulose-Na may be used.
  • the sugar additive is sucrose.
  • Sugar alcohol is defined as a C4-C8 hydrocarbon having at least one —OH group and includes, for example, mannitol, sorbitol, inositol, galacititol, dulcitol, xylitol, and arabitol.
  • the sugar alcohol additive is mannitol.
  • the sugars or sugar alcohols mentioned above may be used individually or in combination. There is no fixed limit to the amount used, as long as the sugar or sugar alcohol is soluble in the liquid preparation and does not adversely effect the stabilizing effects achieved using the methods of the invention.
  • the sugar or sugar alcohol concentration is between about 1 mg/ml and about 150 mg/ml.
  • the isotonic agent is present in a concentration from 1 mg/ml to 50 mg/ml. In a further embodiment of the invention the isotonic agent is present in a concentration from 1 mg/ml to 7 mg/ml. In a further embodiment of the invention the isotonic agent is present in a concentration from 8 mg/ml to 24 mg/ml. In a further embodiment of the invention the isotonic agent is present in a concentration from 25 mg/ml to 50 mg/ml. Each one of these specific isotonic agents constitutes an alternative embodiment of the invention.
  • the use of an isotonic agent in pharmaceutical compositions is well-known to the skilled person. For convenience reference is made to Remington: The Science and Practice of Pharmacy, 19 th edition, 1995.
  • the formulation further comprises a chelating agent.
  • the chelating agent is selected from salts of ethylenediaminetetraacetic acid (EDTA), citric acid, and aspartic acid, and mixtures thereof.
  • the chelating agent is present in a concentration from 0.1 mg/ml to 5 mg/ml.
  • the chelating agent is present in a concentration from 0.1 mg/ml to 2 mg/ml.
  • the chelating agent is present in a concentration from 2 mg/ml to 5 mg/ml.
  • Each one of these specific chelating agents constitutes an alternative embodiment of the invention.
  • the use of a chelating agent in pharmaceutical compositions is well-known to the skilled person. For convenience reference is made to Remington: The Science and Practice of Pharmacy, 19 th edition, 1995.
  • the formulation further comprises a stabiliser.
  • a stabilizer in pharmaceutical compositions is well-known to the skilled person. For convenience reference is made to Remington: The Science and Practice of Pharmacy, 19 th edition, 1995.
  • compositions of the invention are stabilized liquid pharmaceutical compositions whose therapeutically active components include a polypeptide that possibly exhibits aggregate formation during storage in liquid pharmaceutical formulations.
  • aggregate formation is intended a physical interaction between the polypeptide molecules that results in formation of oligomers, which may remain soluble, or large visible aggregates that precipitate from the solution.
  • during storage is intended a liquid pharmaceutical composition or formulation once prepared, is not immediately administered to a subject. Rather, following preparation, it is packaged for storage, either in a liquid form, in a frozen state, or in a dried form for later reconstitution into a liquid form or other form suitable for administration to a subject.
  • liquid pharmaceutical composition or formulation is dried either by freeze drying (i.e., lyophilization; see, for example, Williams and Polli (1984) J. Parenteral Sci. Technol. 38:48-59), spray drying (see Masters (1991) in Spray-Drying Handbook (5th ed; Longman Scientific and Technical, Essez, U.K.), pp. 491-676; Broadhead et al. (1992) Drug Devel. Ind. Pharm. 18:1169-1206; and Mumenthaler et al. (1994) Pharm. Res. 11:12-20), or air drying (Carpenter and Crowe (1988) Cryobiology 25:459-470; and Roser (1991) Biopharm. 4:47-53).
  • Aggregate formation by a polypeptide during storage of a liquid pharmaceutical composition can adversely affect biological activity of that polypeptide, resulting in loss of therapeutic efficacy of the pharmaceutical composition. Furthermore, aggregate formation may cause other problems such as blockage of tubing, membranes, or pumps when the polypeptide-containing pharmaceutical composition is administered using an infusion system.
  • compositions of the invention may further comprise an amount of an amino acid base sufficient to decrease aggregate formation by the polypeptide during storage of the composition.
  • amino acid base is intended an amino acid or a combination of amino acids, where any given amino acid is present either in its free base form or in its salt form. Where a combination of amino acids is used, all of the amino acids may be present in their free base forms, all may be present in their salt forms, or some may be present in their free base forms while others are present in their salt forms.
  • amino acids to use in preparing the compositions of the invention are those carrying a charged side chain, such as arginine, lysine, aspartic acid, and glutamic acid. Any stereoisomer (i.e.
  • R or S-isomers—or L, D or DL-isomer) of a particular amino acid e.g. alanine, methionine methionine, histidine, imidazole, arginine, lysine, isoleucine, aspartic acid, tryptophan, threonine and mixtures thereof
  • a particular amino acid e.g. alanine, methionine methionine, histidine, imidazole, arginine, lysine, isoleucine, aspartic acid, tryptophan, threonine and mixtures thereof
  • L-stereoisomer is used, which denotes the most abundant form of aminoacids.
  • the L-form may be an R or an S isomer dependent on the specific aminoacid.
  • compositions of the invention may also be formulated with analogues of these amino acids.
  • amino acid analogue is intended a derivative of the naturally occurring amino acid that brings about the desired effect of decreasing aggregate formation by the polypeptide during storage of the liquid pharmaceutical compositions of the invention.
  • suitable arginine analogues include, for example, aminoguanidine, ornithine and N-monoethyl L-arginine
  • suitable methionine analogues include S-ethyl homocysteine and S-butyl homocysteine
  • suitable cystein analogues include S-methyl-L cystein.
  • the amino acid analogues are incorporated into the compositions in either their free base form or their salt form.
  • the amino acids or amino acid analogues are used in a concentration, which is sufficient to prevent or delay aggregation of the protein.
  • methionine (or other sulphur containing amino acids or amino acid analogous) may be added to inhibit oxidation of methionine residues to methionine sulfoxide when the polypeptide acting as the therapeutic agent is a polypeptide comprising at least one methionine residue susceptible to such oxidation.
  • inhibitor is intended minimal accumulation of methionine oxidized species over time. Inhibiting methionine oxidation results in greater retention of the polypeptide in its proper molecular form. Any stereoisomer of methionine (L, D, or DL isomer) or combinations thereof can be used.
  • the amount to be added should be an amount sufficient to inhibit oxidation of the methionine residues such that the amount of methionine sulfoxide is acceptable to regulatory agencies. Typically, this means that the composition contains no more than about 10% to about 30% methionine sulfoxide. Generally, this can be achieved by adding methionine such that the ratio of methionine added to methionine residues ranges from about 1:1 to about 1000:1, such as 10:1 to about 100:1.
  • the formulation further comprises a stabiliser selected from the group of high molecular weight polymers or low molecular compounds.
  • the stabilizer is selected from polyethylene glycol (e.g. PEG 3350), polyvinylalcohol (PVA), polyvinylpyrrolidone, carboxy-/hydroxycellulose or derivates thereof (e.g. HPC, HPC-SL, HPC-L and HPMC), cyclodextrins, sulphur-containing substances as monothioglycerol, thioglycolic acid and 2-methylthioethanol, and different salts (e.g. sodium chloride).
  • PEG 3350 polyethylene glycol
  • PVA polyvinylalcohol
  • PVpyrrolidone polyvinylpyrrolidone
  • carboxy-/hydroxycellulose or derivates thereof e.g. HPC, HPC-SL, HPC-L and HPMC
  • cyclodextrins e.g. sulphur-containing substances as monothiogly
  • compositions may also comprise additional stabilizing agents, which further enhance stability of a therapeutically active polypeptide therein.
  • Stabilizing agents of particular interest to the present invention include, but are not limited to, methionine and EDTA, which protect the polypeptide against methionine oxidation, and a nonionic surfactant, which protects the polypeptide against aggregation associated with freeze-thawing or mechanical shearing.
  • the formulation further comprises a surfactant.
  • the surfactant is selected from a detergent, ethoxylated castor oil, polyglycolyzed glycerides, acetylated monoglycerides, sorbitan fatty acid esters, polyoxypropylene-polyoxyethylene block polymers (eg. poloxamers such as Pluronic® F68, poloxamer 188 and 407, Triton X-100), polyoxyethylene sorbitan fatty acid esters, polyoxyethylene and polyethylene derivatives such as alkylated and alkoxylated derivatives (tweens, e.g.
  • Tween-20, Tween-40, Tween-80 and Brij-35 monoglycerides or ethoxylated derivatives thereof, diglycerides or polyoxyethylene derivatives thereof, alcohols, glycerol, lecitins and phospholipids (eg. phosphatidyl serine, phosphatidyl choline, phosphatidyl ethanolamine, phosphatidyl inositol, diphosphatidyl glycerol and sphingomyelin), derivates of phospholipids (eg. dipalmitoyl phosphatidic acid) and lysophospholipids (eg.
  • phospholipids eg. dipalmitoyl phosphatidic acid
  • lysophospholipids eg.
  • ceramides e.g. sodium tauro-dihydrofusidate etc.
  • long-chain fatty acids and salts thereof C6-C12 e.g.
  • acylcarnitines and derivatives N-acylated derivatives of lysine, arginine or histidine, or side-chain acylated derivatives of lysine or arginine, N ⁇ -acylated derivatives of dipeptides comprising any combination of lysine, arginine or histidine and a neutral or acidic amino acid, N ⁇ -acylated derivative of a tripeptide comprising any combination of a neutral amino acid and two charged amino acids, DSS (docusate sodium, CAS registry no [577-11-7]), docusate calcium, CAS registry no [128-49-4]), docusate potassium, CAS registry no [7491-09-0]), SDS (sodium dodecyl sulfate or sodium lauryl sulfate), sodium caprylate, cholic acid or derivatives thereof, bile acids and salts thereof and glycine or taurine conjugates,
  • N-alkyl-N,N-dimethylammonio-1-propanesulfonates 3-cholamido-1-propyldimethylammonio-1-propanesulfonate
  • cationic surfactants quarternary ammonium bases
  • cetyl-trimethylammonium bromide cetylpyridinium chloride
  • non-ionic surfactants eg. dodecyl ⁇ -D-glucopyranoside
  • poloxamines eg.
  • Tetronic's which are tetrafunctional block copolymers derived from sequential addition of propylene oxide and ethylene oxide to ethylenediamine, or the surfactant may be selected from the group of imidazoline derivatives, or mixtures thereof. Each one of these specific surfactants constitutes an alternative embodiment of the invention.
  • Such additional ingredients may include wetting agents, emulsifiers, antioxidants, bulking agents, tonicity modifiers, chelating agents, metal ions, oleaginous vehicles, proteins (e.g., human serum albumin, gelatin or proteins) and a zwitterion (e.g., an amino acid such as betaine, taurine, arginine, glycine, lysine and histidine).
  • additional ingredients should not adversely affect the overall stability of the pharmaceutical formulation of the present invention.
  • compositions containing a compound according to the present invention may be administered to a patient in need of such treatment at several sites, for example, at topical sites, for example, skin and mucosal sites, at sites which bypass absorption, for example, administration in an artery, in a vein, in the heart, and at sites which involve absorption, for example, administration in the skin, under the skin, in a muscle or in the abdomen.
  • topical sites for example, skin and mucosal sites
  • sites which bypass absorption for example, administration in an artery, in a vein, in the heart
  • sites which involve absorption for example, administration in the skin, under the skin, in a muscle or in the abdomen.
  • Administration of pharmaceutical compositions according to the invention may be through several routes of administration, for example, lingual, sublingual, buccal, in the mouth, oral, in the stomach and intestine, nasal, pulmonary, for example, through the bronchioles and alveoli or a combination thereof, epidermal, dermal, transdermal, vaginal, rectal, ocular, for examples through the conjunctiva, uretal, and parenteral to patients in need of such a treatment.
  • routes of administration for example, lingual, sublingual, buccal, in the mouth, oral, in the stomach and intestine, nasal, pulmonary, for example, through the bronchioles and alveoli or a combination thereof, epidermal, dermal, transdermal, vaginal, rectal, ocular, for examples through the conjunctiva, uretal, and parenteral to patients in need of such a treatment.
  • compositions of the current invention may be administered in several dosage forms, for example, as solutions, suspensions, emulsions, microemulsions, multiple emulsion, foams, salves, pastes, plasters, ointments, tablets, coated tablets, rinses, capsules, for example, hard gelatine capsules and soft gelatine capsules, suppositories, rectal capsules, drops, gels, sprays, powder, aerosols, inhalants, eye drops, ophthalmic ointments, ophthalmic rinses, vaginal pessaries, vaginal rings, vaginal ointments, injection solution, in situ transforming solutions, for example in situ gelling, in situ setting, in situ precipitating, in situ crystallization, infusion solution, and implants.
  • solutions for example, suspensions, emulsions, microemulsions, multiple emulsion, foams, salves, pastes, plasters, ointments, tablets, coated tablets, rinses,
  • compositions of the invention may further be compounded in, or attached to, for example through covalent, hydrophobic and electrostatic interactions, a drug carrier, drug delivery system and advanced drug delivery system in order to further enhance stability of the compound, increase bioavailability, increase solubility, decrease adverse effects, achieve chronotherapy well known to those skilled in the art, and increase patient compliance or any combination thereof.
  • carriers, drug delivery systems and advanced drug delivery systems include, but are not limited to, polymers, for example cellulose and derivatives, polysaccharides, for example dextran and derivatives, starch and derivatives, poly(vinyl alcohol), acrylate and methacrylate polymers, polylactic and polyglycolic acid and block co-polymers thereof, polyethylene glycols, carrier proteins, for example albumin, gels, for example, thermogelling systems, for example block co-polymeric systems well known to those skilled in the art, micelles, liposomes, microspheres, nanoparticulates, liquid crystals and dispersions thereof, L2 phase and dispersions there of, well known to those skilled in the art of phase behaviour in lipid-water systems, polymeric micelles, multiple emulsions, self-emulsifying, self-microemulsifying, cyclodextrins and derivatives thereof, and dendrimers.
  • polymers for example cellulose and derivatives, polysaccharides, for example dextran and derivative
  • compositions of the current invention are useful in the formulation of solids, semisolids, powder and solutions for pulmonary administration of the compound, using, for example a metered dose inhaler, dry powder inhaler and a nebulizer, all being devices well known to those skilled in the art.
  • compositions of the current invention are specifically useful in the formulation of controlled, sustained, protracting, retarded, and slow release drug delivery systems. More specifically, but not limited to, compositions are useful in formulation of parenteral controlled release and sustained release systems (both systems leading to a many-fold reduction in number of administrations), well known to those skilled in the art. Even more preferably, are controlled release and sustained release systems administered subcutaneous.
  • examples of useful controlled release system and compositions are hydrogels, oleaginous gels, liquid crystals, polymeric micelles, microspheres, nanoparticles,
  • Methods to produce controlled release systems useful for compositions of the current invention include, but are not limited to, crystallization, condensation, co-cystallization, precipitation, co-precipitation, emulsification, dispersion, high pressure homogenization, encapsulation, spray drying, microencapsulation, coacervation, phase separation, solvent evaporation to produce microspheres, extrusion and supercritical fluid processes.
  • General reference is made to Handbook of Pharmaceutical Controlled Release (Wise, D. L., ed. Marcel Dekker, New York, 2000) and Drug and the Pharmaceutical Sciences vol. 99: Protein Formulation and Delivery (MacNally, E. J., ed. Marcel Dekker, New York, 2000).
  • Parenteral administration may be performed by subcutaneous, intramuscular, intraperitoneal or intravenous injection by means of a syringe, optionally a pen-like syringe.
  • parenteral administration can be performed by means of an infusion pump.
  • a further option is a composition which may be a solution or suspension for the administration of the compound according to the present invention in the form of a nasal or pulmonal spray.
  • the pharmaceutical compositions containing the compound of the invention can also be adapted to transdermal administration, e.g. by needle-free injection or from a patch, optionally an iontophoretic patch, or transmucosal, e.g. buccal, administration.
  • stabilized formulation refers to a formulation with increased physical stability, increased chemical stability or increased physical and chemical stability.
  • physical stability of the protein formulation as used herein refers to the tendency of the protein to form biologically inactive and/or insoluble aggregates of the protein as a result of exposure of the protein to thermo-mechanical stresses and/or interaction with interfaces and surfaces that are destabilizing, such as hydrophobic surfaces and interfaces.
  • Physical stability of the aqueous protein formulations is evaluated by means of visual inspection and/or turbidity measurements after exposing the formulation filled in suitable containers (e.g. cartridges or vials) to mechanical/physical stress (e.g. agitation) at different temperatures for various time periods. Visual inspection of the formulations is performed in a sharp focused light with a dark background.
  • the turbidity of the formulation is characterized by a visual score ranking the degree of turbidity for instance on a scale from 0 to 3 (a formulation showing no turbidity corresponds to a visual score 0, and a formulation showing visual turbidity in daylight corresponds to visual score 3).
  • a formulation is classified physical unstable with respect to protein aggregation, when it shows visual turbidity in daylight.
  • the turbidity of the formulation can be evaluated by simple turbidity measurements well-known to the skilled person.
  • Physical stability of the aqueous protein formulations can also be evaluated by using a spectroscopic agent or probe of the conformational status of the protein.
  • the probe is preferably a small molecule that preferentially binds to a non-native conformer of the protein.
  • Thioflavin T is a fluorescent dye that has been widely used for the detection of amyloid fibrils. In the presence of fibrils, and perhaps other protein configurations as well, Thioflavin T gives rise to a new excitation maximum at about 450 nm and enhanced emission at about 482 nm when bound to a fibril protein form. Unbound Thioflavin T is essentially non-fluorescent at the wavelengths.
  • hydrophobic patch probes that bind preferentially to exposed hydrophobic patches of a protein.
  • the hydrophobic patches are generally buried within the tertiary structure of a protein in its native state, but become exposed as a protein begins to unfold or denature.
  • these small molecular, spectroscopic probes are aromatic, hydrophobic dyes, such as antrhacene, acridine, phenanthroline or the like.
  • spectroscopic probes are metal-amino acid complexes, such as cobalt metal complexes of hydrophobic amino acids, such as phenylalanine, leucine, isoleucine, methionine, and valine, or the like.
  • chemical stability of the protein formulation as used herein refers to chemical covalent changes in the protein structure leading to formation of chemical degradation products with potential less biological potency and/or potential increased immunogenic properties compared to the native protein structure.
  • chemical degradation products can be formed depending on the type and nature of the native protein and the environment to which the protein is exposed. Elimination of chemical degradation can most probably not be completely avoided and increasing amounts of chemical degradation products is often seen during storage and use of the protein formulation as well-known by the person skilled in the art.
  • Most proteins are prone to deamidation, a process in which the side chain amide group in glutaminyl or asparaginyl residues is hydrolysed to form a free carboxylic acid.
  • a “stabilized formulation” refers to a formulation with increased physical stability, increased chemical stability or increased physical and chemical stability.
  • a formulation must be stable during use and storage (in compliance with recommended use and storage conditions) until the expiration date is reached.
  • the pharmaceutical formulation comprising the compound according to the present invention is stable for more than 6 weeks of usage and for more than 3 years of storage.
  • the pharmaceutical formulation comprising the compound according to the present invention is stable for more than 4 weeks of usage and for more than 3 years of storage.
  • the pharmaceutical formulation comprising the compound according to the present invention is stable for more than 4 weeks of usage and for more than two years of storage.
  • the pharmaceutical formulation comprising the compound is stable for more than 2 weeks of usage and for more than two years of storage.
  • the present invention relates to the use of a compound according to the invention for the preparation of a medicament.
  • a compound according to the invention wherein the therapeutic agent is a GLP-1 peptide is used for the preparation of a medicament for the treatment or prevention of hyperglycemia, type 2 diabetes, impaired glucose tolerance, type 1 diabetes, obesity, hypertension, syndrome X, dyslipidemia, disorders associated with toxic hypervolemia, cognitive disorders, atheroschlerosis, myocardial infarction, coronary heart disease, stroke and other cardiovascular disorders, inflammatory bowel syndrome, dyspepsia and gastric ulcers.
  • a compound according to the invention wherein the therapeutic agent is a GLP-1 peptide is used for the preparation of a medicament for delaying or preventing disease progression in type 2 diabetes.
  • a compound according to the invention wherein the therapeutic agent is a GLP-1 peptide is used for the preparation of a medicament for decreasing food intake, decreasing ⁇ -cell apoptosis, increasing ⁇ -cell function and ⁇ -cell mass, stimulating ⁇ -cell regeneration, and/or for restoring glucose sensitivity to ⁇ -cells.
  • the present invention relates to the use of a compound according to the invention wherein the therapeutic agent is a GLP-2 peptide for the preparation of a medicament for the treatment of small bowel syndrome, inflammatory bowel syndrome or Crohns disease.
  • the present invention relates to the use of a compound according to the invention wherein the therapeutic agent is an insulin peptide for the preparation of a medicament for the treatment of hyperglycemia, type 1 diabetes, type 2 diabetes or ⁇ -cell deficiency.
  • the treatment with a compound according to the present invention may also be combined with combined with a second or more pharmacologically active substances, e.g. selected from antidiabetic agents, antiobesity agents, appetite regulating agents, antihypertensive agents, agents for the treatment and/or prevention of complications resulting from or associated with diabetes and agents for the treatment and/or prevention of complications and disorders resulting from or associated with obesity.
  • a second or more pharmacologically active substances e.g. selected from antidiabetic agents, antiobesity agents, appetite regulating agents, antihypertensive agents, agents for the treatment and/or prevention of complications resulting from or associated with diabetes and agents for the treatment and/or prevention of complications and disorders resulting from or associated with obesity.
  • Examples of these pharmacologically active substances are: Insulin, GLP-1 agonists, sulphonylureas, biguanides, meglitinides, glucosidase inhibitors, glucagon antagonists, DPP-IV (dipeptidyl peptidase-IV) inhibitors, inhibitors of hepatic enzymes involved in stimulation of gluconeogenesis and/or glycogenolysis, glucose uptake modulators, compounds modifying the lipid metabolism such as antihyperlipidemic agents as HMG CoA inhibitors (statins), compounds lowering food intake, RXR agonists and agents acting on the ATP-dependent potassium channel of the ⁇ -cells; Cholestyramine, colestipol, clofibrate, gemfibrozil, lovastatin, pravastatin, simvastatin, probucol, dextrothyroxine, neteglinide, repaglinide; ⁇ -blockers such as alprenolol,
  • Boc tert-butyloxycarbonyl
  • Bt 1-benzotriazolyl
  • DBU 1,8-diazabicyclo[5.4.0]undec-7-ene
  • DCM dichloromethane
  • Dde 1-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethyl
  • DIC diisopropylcarbodiimide
  • DMF N,N-dimethyl formamide
  • DMSO dimethyl sulfoxide
  • DMAP 4-dimethylaminopyridine
  • DMPU 1,3-dimethyltetrahydropyrimidin-2-one
  • EDC or EDAC N-ethyl-N′-(3-dimethylaminopropyl)carbodiimide hydrochloride
  • Fmoc 9-fluorenylmethyloxycarbonyl
  • HBTU 2-(1H-Benzotriazol-1-yl-)-1,1,3,3 tetramethyluronium hexafluorophosphate
  • HOAt 3-hydroxy-3H-[1,2,3]triazolo[4,5-b]pyridine
  • HOBt N-hydroxybenzotriazole, 1-hydroxybenzotriazole
  • HPLC high pressure liquid chromatography
  • Su succinimidyl TIS triisopropylsilane
  • Trt trityl, triphenylmethyl
  • Ts toluenesulfonyl TSTU
  • DIEA diisopropylethylamine H 2 O water CH 3 CN acetonitrile OtBu tert butyl ester tBu tert butyl Trt triphenylmethyl
  • TFA triflu
  • HPLC-systems from Merck-Hitachi HibarTM RT 250-4, LichrosorbTM RP 18, 5.0 ⁇ m, 4.0 ⁇ 250 mm, gradient elution, 20% to 80% acetonitrile in water within 30 min, 1.0 ml/min, detection at 254 nm
  • Waters SymmetryTM, C18, 3.5 ⁇ m, 3.0 ⁇ 150 mm, gradient elution, 5% to 90% acetonitrile in water within 15 min, 1.0 ml/min, detection at 214 nm
  • the reverse phase analysis was performed using UV detections at 214, 254, 276 and 301 nm on a 218TP54 4.6 mm ⁇ 150 mm C-18 silica column, which was eluted at 1 ml/min at 42° C.
  • the column was equilibrated with 5% acetonitrile, 85% water and 10% of a solution of 0.5% trifluoroacetic acid in water and eluted by a linear gradient from 5% acetonitrile, 85% water and 10% of a solution of 0.5% trifluoroacetic acid to 90% acetonitrile and 10% of a solution of 0.5% trifluoroacetic acid over 15 min.
  • the RP-analysis was performed using a Waters 2690 systems fitted with a Waters 996 diode array detector. UV detections were collected at 214, 254, 276, and 301 nm on a 218TP54 4.6 mm ⁇ 250 mm 5 ⁇ C-18 silica column (The Seperations Group, Hesperia), which was eluted at 1 ml/min at 42° C. The column was equilibrated with 5% acetonitrile (+0.1% TFA) in an aqueous solution of TFA in water (0.1%). After injection, the sample was eluted by a gradient of 0% to 90% acetonitrile (+0.1% TFA) in an aqueous solution of TFA in water (0.1%) during 50 min.
  • the compounds of formula (I) according to the invention may be prepared by the general procedure (A):
  • a molecule of which a prolonged halflife in plasma is required and which contains at least one acylable amino group is dissolved in a suitable solvent (water, alcohols, DMF, DMSO, DMPU, or mixtures thereof) and a solution or suspension of (II) in DMF or DMSO is added.
  • a suitable solvent water, alcohols, DMF, DMSO, DMPU, or mixtures thereof
  • a solution or suspension of (II) in DMF or DMSO is added.
  • the mixture is stirred at room temperature and the progress of the reaction is followed by HPLC. If the reaction proceeds too slowly catalytic amounts of DMAP may be added.
  • the product is isolated by preparative HPLC of the whole reaction mixture.
  • a ⁇ -haloalkanoic acid or ester is treated with a slight excess of NaCN or KCN in a suitable solvent, such as DMF, DMSO, acetone, or an alcohol until complete conversion to the nitrile has taken place.
  • a suitable solvent such as DMF, DMSO, acetone, or an alcohol
  • the reaction is followed by analyzing samples by 1H NMR.
  • the resulting ⁇ -cyanoalkanoic acid or ester is isolated by dilution with water and extraction with AcOEt or DCM. Treatment of this ⁇ -cyanoalkanoic acid or ester with NaN3 in the presence of AcOH and NEt 3 in DMF at 140° C.
  • the general procedure (B) may also be conducted with an ⁇ -halo alkanoic ester instead of an acid. Saponification of the resulting ⁇ -(tetrazol-5-yl)alkanoic ester to the corresponding acid can be performed by treatment with an excess KOH or NaOH in a mixture of water and ethanol.
  • An ⁇ -(5-tetrazolyl)alkanoic acid is converted into an acyl halide or N-hydroxysuccinimidyl ester, and then coupled to lysine methyl ester. Saponification of the resulting product yields N,N′-bis( ⁇ -(5-tetrazolyl)alkanoyl)lysine.
  • a ⁇ -haloalkanoic acid or ester is treated with a cyanophenol, cyanothiophenol, dicyanophenol, cyanobiphenylol, cyanoterphenylol, cyanoaniline, cyanohydroxyheteroarene, or a related reagent containing at least one cyano group and one arene- or heteroarene-bound hydroxyl group in the presence of a base such as K 2 CO 3 or DBU in a suitable solvent, such as DMF, DMSO, acetone, or an alcohol until complete conversion to the aryl or heteroarylether, -thioether, or -amine has taken place.
  • a base such as K 2 CO 3 or DBU
  • a suitable solvent such as DMF, DMSO, acetone, or an alcohol until complete conversion to the aryl or heteroarylether, -thioether, or -amine has taken place.
  • the reaction is followed by analyzing samples by 1H NMR.
  • ⁇ -aryloxy-, ⁇ -arylthio-, or ⁇ -arylaminoalkanoic acid or ester is isolated by dilution with water and extraction with AcOEt or DCM.
  • Treatment of this product with NaN 3 in the presence of AcOH and NEt 3 in DMF at 140° C. until all the starting material is consumed (as determined by 1H NMR) yields the corresponding ⁇ -(5-tetrazolyl)aryloxy-, ⁇ -(5-tetrazolyl)arylthio-, or ⁇ -(5-tetrazolyl)arylaminoalkanoic acid or ester.
  • ester In the case of the ester, it is converted to the acid by treatment with an excess of NaOH or KOH in a mixture of water and an alcohol. Evaporation of the alcohol and addition of dilute aqueous HCl yields the ⁇ -(5-tetrazolyl)aryl functionalized alkanoic acid, which can be isolated by filtration.
  • An ⁇ -(5-tetrazolyl)alkanoic or related acid is converted into an acyl halide, and then treated with 4-(sulfamoyl)butyric acid methyl ester and DMAP in a suitable solvent, such as DCM or DCE.
  • a suitable solvent such as DCM or DCE.
  • the resulting 4-(N-( ⁇ -(5-tetrazolyl)alkanoyl)sulfamoyl)butyric acid methyl ester is saponified to the corresponding acid by treatment with an excess of KOH or NaOH in a mixture of water and methanol.
  • the peptides were synthesized on Fmoc protected Rink amide resin (Novabiochem), Fmoc protected Wang resin or chlorotrityl resin using Fmoc strategy on an Applied Biosystems 433A peptide synthesizer in 0.25 mmol scale using the manufacturer supplied FastMoc UV protocols which employ HBTU mediated couplings in NMP and UV monitoring of the deprotection of the Fmoc protection group.
  • the protected amino acid derivatives used were standard Fmoc-amino acids (Anaspec) supplied in preweighed cartridges suitable for the ABI 433A synthesizer with the exception of unnatural aminoacids such as Fmoc-Aib-OH (Fmoc-aminoisobutyric acid).
  • the amino acid (4 molar equivalents relative to resin) was dissolved in NMP (10 ml). HOBt (4 molar equivalents relative to resin) and diisopropylcarbodiimide (4 molar equivalents relative to resin) were added and the solution was stirred for 15 min. The solution was added to the resin and DIPEA (4 molar equivalents relative to resin) was added. The resin was shaken 24 hours at room temperature. The resin was washed with NMP (2 ⁇ 20 ml), NMR/DCM (1:1; 2 ⁇ 20 ml) and DCM (2 ⁇ 20 ml).
  • the peptide was cleaved from the resin by stirring for 180 min at room temperature with a mixture of TFA, water and triisopropylsilane (95:2.5:2.5). The cleavage mixture was filtered and the filtrate was concentrated to an oil by a stream of nitrogen. The crude peptide was precipitated from this oil with 45 ml diethyl ether and washed 3 times with 45 ml diethyl ether.
  • the crude peptide was purified by semipreparative HPLC on a 25 mm ⁇ 250 mm column packed with 5 ⁇ C-18 silica.
  • the RP-HPLC analysis was performed using UV detection at 214 nm and a Vydac 218TP54 4.6 mm ⁇ 250 mm 5 ⁇ C-18 silica column (The Separations Group, Hesperia, USA) which was eluted at 1 ml/min at 42° C. Two different elution conditions were used:
  • A1 Equilibration of the column with in a buffer consisting of 0.1M (NH4)2SO4, which was adjusted to pH 2.5 with concentrated H2SO4 and elution by a gradient of 0% to 60% CH3CN in the same buffer during 50 min.
  • B1 Equilibration of the column with 0.1% TFA/H2O and elution by a gradient of 0% CH3CN/0.1% TFA/H2O to 60% CH3CN/0.1% TFA/H2O during 50 min.
  • B6 Equilibration of the column with 0.1% TFA/H2O and elution by a gradient of 0% CH3CN/0.1% TFA/H2O to 90% CH3CN/0.1% TFA/H2O during 50 min.
  • LCMS was performed on a setup consisting of Hewlett Packard series 1100 G1312A Bin Pump, Hewlett Packard series 1100 Column compartment, Hewlett Packard series 1100 G1315A DAD diode array detector, Hewlett Packard series 1100 MSD and Sedere 75 Evaporative Light Scattering detectorcontrolled by HP Chemstation software.
  • the HPLC pump is connected to two eluent reservoirs containing:
  • the analysis was performed at 23° C. by injecting an appropriate volume of the sample (preferably 20 ⁇ l) onto the column which is eluted with a gradient of A and B.
  • HPLC conditions, detector settings and mass spectrometer settings used are giving in the following table.
  • a resin (Fmoc-Gly-Wang resin, 0.6 mmol/g Novabiochem 0.25 mmole) was used to produce the primary sequence on an ABI 433A machine according to manufacturers guidelines.
  • the resin (0.25 mmole) was placed in a manual shaker/filtration apparatus and treated with 2% hydrazine in NMP in (2 ⁇ 12 min. 2 ⁇ 20 ml) to remove the Dde group.
  • the resin was washed with NMP (4 ⁇ 20 ml).
  • Fmoc-8-amino-3,6-dioxaoctanoic acid (Neosystem FA03202) (4 molar equivalents relative to resin) was dissolved in NMP/DCM (1:1, 20 ml).
  • the solution was added to the resin and DIPEA (4 molar equivalents relative to resin) was added.
  • the resin was shaken 24 hours at room temperature.
  • the resin was washed with NMP (2 ⁇ 20 ml), NMP/DCM (1:1) (2 ⁇ 20 ml) and DCM (2 ⁇ 20 ml).
  • the peptide was cleaved from the resin by stirring for 180 min at room temperature with a mixture of TFA, water and triisopropylsilane (95:2.5:2.5; 15 ml).
  • the cleavage mixture was filtered and the filtrate was concentrated to an oil in vaccuum.
  • the crude peptide was precipitated from this oil with 45 ml diethyl ether and washed 3 times with 45 ml diethyl ether.
  • the crude peptide was purified by preparative HPLC on a 20 mm ⁇ 250 mm column packed with 7 ⁇ C-18 silica.
  • the crude peptide was dissolved in 5 ml 50% acetic acid in water and diluted to 20 ml with H2O and injected on the column which then was eluted with a gradient of 40-60% (CH3CN in water with 0.1% TFA) 10 ml/min during 50 min at 40° C.
  • the peptide containing fractions were collected.
  • the purified peptide was lyophilized after dilution of the eluate with water.
  • the binding assay was performed with purified plasma membranes containing the human GLP-1 receptor.
  • the plasma membranes containing the receptors were purified from stably expressing BHK tk-ts 13 cells.
  • Membranes in the presence of 0.05 nM [ 125 I]GLP-1, unlabelled ligands in increasing concentrations and different HSA concentrations (0.005%, 0.05%, and 2%) were incubated 2 hr at 30° C. After incubation, unbound ligands were separated from bound ligands by filtration through a vacuum-manifold followed by 2 ⁇ 100 ⁇ l washing with ice cold assay buffer. The filters were dried overnight at RT, punched out and quantified in a ⁇ -counter.
  • This product was mixed with DMF (150 ml), AcOH (10.0 ml, 174.8 mmol), NEt 3 (25 ml, 180 mmol), and NaN 3 (11.83 g, 182 mmol), and the mixture was stirred at 120° C. for 80 h, while following the conversion by 1 H NMR. The mixture was concentrated under reduced pressure, and to the residue water (250 ml) and concentrated HCl (25 ml) were added. The acidic mixture was stirred at room temperature for 2 d, filtered, and the solid recrystallized from MeCN (approx 300 ml). 7.60 g (65%) of the title compound was obtained.
  • This compound was prepared by acylation with 16-[5-tetrazolyl]hexadecanoic acid (Example 1) of unprotected Arg 34 GLP-1-(7-37) peptide in solution.
  • the succinimidyl ester of 16-[5-tetrazolyl]hexadecanoic acid was prepared by mixing the acid (29 mg) with THF (0.9 ml), DIPEA (17 microliter), and TSTU (30 mg), and stirring the resulting mixture at room temperature for 1 h.
  • Arg 34 GLP-1-(7-37) (0.33 g, 30% pure) was dissolved in water (5 ml) and DIPEA (50 microliter), and the solution of the succinimidyl ester (0.3 ml) was added. After stirring at room temperature for 20 min the excess succinimidyl ester was quenched by addition of an excess glycine, and the product was purified by preparative HPLC. 38 mg of the title compound were obtained.
  • Gly 8 ,Arg 26,34 GLP-1-(7-37) was prepared on a 433A peptide synthesizer using standard Fmoc-methodology and using Fmoc-Lys(Boc)-trityl polystyrene (0.88 g, loading: 0.79 mmol/g) as starting resin. After purification by preparative HPLC 25 mg of Gly 8 ,Arg 26,34 GLP-1(7-37) peptide was obtained.
  • the title compound was prepared by acylation of Gly8,Arg 26,34 GLP-1(7-37) peptide (25 mg) with 16-(5-tetrazolyl)hexadecanoic acid (23 mg) as described for Example 5. 14.6 mg of the title compound were obtained.
  • Example 6 The title compound was prepared as Example 6 from ⁇ 4-[N-(16- ⁇ 5-tetrazolyl ⁇ hexadecanoyl)sulfamoyl]butyric acid (21 mg; Example 2) and Gly 8 ,Arg 26,34 GLP-1(7-37) (25 mg). 1.5 mg of the title compound was obtained.
  • This compound was prepared as Example 5 from ⁇ 4-[N-(16- ⁇ 5-tetrazolyl ⁇ hexadecanoyl)sulfamoyl]butyric acid (21 mg; Example 2) and Arg 34 GLP-1(7-37) peptide (0.3 g, 30% pure). 10.1 mg of the title compound was obtained.
  • Human growth hormone 100 mg, hGH was dissolved in H 2 O (6 ml), DIEA (7.5 ⁇ l), and NMP (6 ml) and cooled to 0° C. 16-(Tetrazol-5-yl)hexadecanoyl-ONSu (3.5 mg, 2 eq), dissolved in NMP (100 ⁇ l), was added. The reaction mixture was stirred for 1 h and purified by ion exchange chromatography.
  • the crude reaction mixture was diluted five times in 50 mM Tris pH 8.5 and applied to a Mono Q column.
  • a 10 ml 10/10 Mono Q column from Amersham Pharmcia was used for purification of 6 ml crude reaction mixture .
  • a 1000 CV gradient was used to separate the native, monoacylated in position 30/45/70, monoacylated in position 140/145, diacylated and triacylated hGH.
  • a steep gradient was used to elute dimeric hGH.
  • As eluting buffer 50 mM Tris, 2 M NaCl, pH 8.5 was used.
  • the purification was performed at 4° C.
  • fractions containing monoacylated hGH (peak 2) was pooled and subsequently ultrafiltrated using a Amicon with a YM10 filter.
  • the washing buffer was 50 mM Ammoniumcarbonate pH 8.0.
  • the acylated protein was lyophillised.
  • Peak 1 contains native hGH
  • Peak 2 contains monoacylated hGH in position 38 or 45 or 70.
  • Peak 3 contains monoacylated hGH in position 140 or 145
  • Peak 4 contains diacylated hGH
  • Peak 5 contains triacylated hGH
  • GLP-1-(7-37) peptide was prepared on an Advanced Chemtech APEX 348 peptide synthesizer using standard Fmoc methodology and using 2-chlorotrityl chloride resin (0.400 g, loading: 1.4 mmol/g) as starting resin. Lys38 was protected as Fmoc-Lys(ivDde)-OH.
  • IvDde was removed with 3% hydrazine and 3% piperidine in NMP for 60 min.
  • GLP-1(7-37) peptide was prepared on an Advanced ChemTech APEX 348 peptide synthesizer using standard Fmoc methodology and using 2-chlorotrityl chloride resin (0.400 g, loading: 1.4 mmol/g) as starting resin. Lys37 was protected as Fmoc-Lys(ivDde)-OH.
  • [Aib8,Arg26,34,Lys38]GLP-1(7-37) peptide was prepared on the Advanced ChemTech APEX 348 peptide synthesizer using standard Fmoc methodology and 2-chlorotrityl chloride resin (0.150 g, loading: 1.4 mmol/g) as starting resin. Lys38 was protected as Fmoc-Lys(ivDde)-OH.
  • the peptide was cleaved from the support (90% TFA, 5% T is, 2% thioanisol, 3% water, 2 h), precipitated with Et 2 O, lyophilized, and purified by preparative RP-HPLC (gradient elution 0-5 min: 80% A, 20% B; 5-45 min to 40% A, 60% B; A: water+0.1% TFA; B: MeCN+0.07% TFA).
  • the peptide was cleaved from the support (90% TFA, 5% T is, 2% thioanisol, 3% water, 2 h), precipitated with Et 2 O, lyophilized, and purified by preparative RP-HPLC (gradient elution 0-5 min: 80% A, 20% B; 5-45 min to 40% A, 60% B; A: water+0.1% TFA; B: MeCN+0.07% TFA).
  • [3-(4-Imidazolyl)Propionyl7,Aib22,35,Arg26,34,Lys37]GLP-1(7-37) peptide was prepared on a 433A peptide synthesizer using standard Fmoc-methodology and using Fmoc-Lys(Boc)-trityl polystyrene (0.51 g, loading: 0.50 mmol/g) as starting resin. After purification by preparative HPLC 159 mg of [3-(4-imidazolyl)propionyl7,Aib22,35,Arg26,34,Lys37]GLP-1 (7-37) peptide was obtained.
  • the title compound was prepared by acylation of [3-(4-imidazolyl)propionyl7,Aib22,35,Arg26,34,Lys37]GLP-1(7-37) peptide (18 mg) with 16-(4′-(tetrazol-5-yl)biphenyl)-4-yloxy)hexadecanoic acid (10 mg) as described for Example 5. 4.74 mg of the title compound was obtained.
  • the title compound was prepared by acylation of [3-(4-imidazolyl)propionyl7,Aib22,35,Arg26,34,Lys37]GLP-1(7-37) peptide (18 mg) with 16-(tetrazol-5-yl)hexadecanoic acid (8.5 mg) as described for Example 5. 7.32 mg of the title compound was obtained.
  • the title compound was prepared by acylation of [3-(4-imidazolyl)propionyl7,Aib22,35,Arg26,34,Lys37]GLP-1(7-37) peptide (18 mg) with 16-(4-(tetrazol-5-yl)phenoxy)hexadecanoic acid (8.0 mg) as described for Example 5. 2.59 mg of the title compound was obtained.
  • the title compound was prepared by acylation of [3-(4-imidazolyl)propionyl7,Aib22,35,Arg26,34,Lys37] GLP-1(7-37) peptide (18 mg) with (4-(4-(tetrazol-5-yl)[1,1′,4′,1′′]terphenyl-4′′yloxy)butyric acid (8.0 mg) as described for Example 5. 0.83 mg of the title compound was obtained.
  • This compound was prepared as described in example 21.
  • This compound was prepared as described in example 21.
  • 16-(2H-Tetrazol-5-yl)hexadecanoic acid (433 mg, 1.34 mmol) was heated in toluene (5 mL) and 2,2-dimethoxypropane (2 mL, 16 mmol) to reflux for to minutes. The solvent was removed in vacuo. Ethyl acetate (10 mL) was added, followed by N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (359 mg, 1.87 mmol) and 1 hydroxybenzotriazol (281 mg, 2 mmol).
  • Step 2 Synthesis of 2-(16-2H-Tetrazol-5-yl-hexadecanoylamino)pentanedioic Acid 1-tert-butyl Ester 5-(2,5-dioxopyrrolidin-1-yl) Ester
  • Step 3 Synthesis of N ⁇ B29 -(16-2H-Tetrazol-5-yl-hexadecanoyl) gamma-Glu-des(B30) Human Insulin
  • A1B1BocBoc des(B30) insulin (Kurtzhals P; Havelund S; Jonassen I; Kiehr B; Larsen UD; Ribel U; Markussen J Biochemical Journal, 1995, 312, 725-731) (0.2 g, 0.034 mmol) was dissolved in DMSO (3 mL).
  • Triethylamine (0.047 mL, 0.34 mmol) and a solution of 2-(16-2H-tetrazol-5-yl-hexadecanoylamino)pentanedioic acid 1-tert-butyl ester 5-(2,5-dioxo-pyrrolidin-1-yl) ester (58 mg, 0.096 mmol) in DMSO (1 mL) were added, and the mixture was shaken at room temperature for 1 hour. The mixture was cooled with an icebath (the DMSO froze), water (10 mL) was added and the frozen mixture was allowed to melt. The pH was adjusted to 5.2 with 1N HCl. The product was allowed to precipitate for 1 hour at 5° C.
  • the precipitate was isolated by centrifugation and treated with TFA (10 mL) for 30 min. This solution was poured into ice-cooled diethylether (40 mL), and the crude product was isolated by centrifugation and purified on C-18 RP-HPLC 5 cm ⁇ 20 cm, flow 20 ml/min using an acetonitrile/water 25-45% gradient containing 0.1% TFA. Fractions containing the product were combined and lyophilized. To the lyophilized material was added water (7.2 mL) and the pH adjusted to 8.98 with 1 N and 0.1 N NaOH. The pH was adjusted back to 5.2-5.5 with 0.1 N HCl. The precipitate was isolated by centrifugation and lyophilized to give the title compound.
  • N B29 ⁇ -4-[4′′-(1H-Tetrazol-5-yl)[1,1′;4′,1′′]terphenyl-4-yloxy]butyroyl des(B30) insulin was purified by RP-HPLC on C4-column, buffer A: 20% EtOH+0.1% TFA, buffer B: 80% EtOH+0.1% TFA; gradient 15-60% B, followed by HPLC on C4-column, buffer A: 10 mM Tris+15 mM ammonium sulphate in 20% EtOH, pH 7.3, buffer B: 80% EtOH, gradient 15-60% B.
  • 16-(4′-(5-Tetrazolyl)biphenyl-4-yloxy)hexadecanoic acid (309 mg, 0.63 mmol) was suspended in DMF (4 ml) and treated with TSTU (227 mg, 0.75 mmol) and DIEA (127 ⁇ L, 0.75 mmol). The mixture was stirred overnight. The solvent was removed in vacuo and the residue was partitioned between ethyl acetate and 0.1 M HCl.
  • N B29 ⁇ -16-[4′-(1H-Tetrazol-5-yl)biphenyl-4-yloxy]hexadecanoyl des(B30) insulin was purified by RP-HPLC on C4-column, buffer A: 20% EtOH+0.1% TFA, buffer B: 80% EtOH+0.1% TFA; gradient 15-60% B, followed by HPLC on C4-column, buffer A: 10 mM Tris+15 mM ammonium sulphate in 20% EtOH, pH 7.3, buffer B: 80% EtOH, gradient 15-60% B.
  • the title compound was prepared as example 6 from 16-(4-(4-(5-tetrazolyl)phenyl)phenyloxy)hexadecanoic acid and [Gly8,Arg26,34]GLP-1-(7-37) peptide (25 mg). 6.1 mg of the title product was obtained.
  • the title compound was prepared as example 6 from 17,17-bis(5-tetrazolyl)heptadecanoic acid and [Gly8,Arg26,34]GLP-1-(7-37) peptide (45 mg). 12.5 mg of the title product was obtained.
  • the title compound was prepared as example 6 from 4-(4′- ⁇ 5-[4-(5-tetrazolyl)phenyl]-[1,2,4]oxadiazol-3-yl ⁇ biphenyl-4-yloxy)butyric acid and [Gly8,Arg26,34]GLP-1-(7-37) peptide (60 mg). 1.8 mg of the title product was obtained.
  • the title compound was prepared as example 6 from 16-(4,5-bis(5-tetrazolyl)imidazol-1-yl)hexadecanoic acid and [Gly8,Arg26,34]GLP-1-(7-37) peptide (60 mg). 8 mg of the title product was obtained.
  • the resin was treated with a 20%-solution of piperidine in DMF (2 ⁇ 10 min), and washed extensively with DMF and dichloromethane.
  • the resin was then extensively washed with DMF, dichloromethane and methanol, and suspended in a mixture of trifluoroacetic acid and dichloromethane (25:75; vol). After 0.5 h the resin was filtered, rinsed with dichloromethane, the combined filtrates were concentrated and the residue recrystallized from MeCN to yield 0.26 g of the title compound.
  • the title compound was prepared as example 6 from (2-(2-(16-(5-tetrazolyl)hexadecanoylamino)ethoxy)ethoxy)acetic acid and [Gly8,Arg26,34]GLP-1-(7-37) peptide (85 mg). 28 mg of the title product was obtained.
  • This compound was prepared as example 5 from 4-(16-(5-tetrazolyl)hexadecanoylaminosulfonyl)butyric acid acid and [(3-(4-imidazolyl)propionyl7,Arg34]GLP-1-(7-37) peptide (50 mg). 13.3 mg of the title compound was obtained.
  • the title compound was prepared as example 6 from 16-(5-tetrazolyl)hexadecanoic acid and [Gly8, Arg26] GLP-1(7-34) peptideamide (50 mg). 17 mg of the title product was obtained.
  • This compound was prepared on 2-chlorotrityl chloride resin as described for the synthesis of (2-(2-(16-(5-tetrazolyl)hexadecanoylamino)ethoxy)ethoxy)acetic acid.
  • the title compound was prepared as example 6 from (2-(2-(4-(16-(5-tetrazolyl)hexadecanoylaminosulfonyl)butyrylamino)ethoxy)ethoxy)acetic acid and [Arg34]GLP-1-(7-37) peptide (350 mg). 35 mg of the title product was obtained.
  • the title compound was prepared as example 6 from (2-(2-(4-(16-(5-tetrazolyl)hexadecanoylaminosulfonyl)butyrylamino)ethoxy)ethoxy)acetic acid and [Arg26]GLP-1-(7-34) peptide (40 mg). 6.5 mg of the title product was obtained.
  • the title compound was prepared as example 6 from (2-(2-(4-(16-(5-tetrazolyl)hexadecanoylaminosulfonyl)butyrylamino)ethoxy)ethoxy)acetic acid and [(3-(4-imidazolyl)propionyl) 7 ,Arg34]GLP-1-(7-37) peptide (27 mg). 9.5 mg of the title product was obtained.
  • the title compound was prepared as example 6 from (4-(16-(5-tetrazolyl)hexadecanoylaminosulfonyl)butyric acid and [Aib8,Arg34]GLP-1-(7-37) peptide (50 mg). 18.4 mg of the title product was obtained.
  • the title compound was prepared as example 6 from (4-(16-(5-tetrazolyl)hexadecanoylaminosulfonyl)butyric acid and N ⁇ 7 (Me)[Arg34]GLP-1-(7-37) peptide (35 mg). 2.5 mg of the title product was obtained.
  • the title compound was prepared as example 6 from 4-(16-(5-tetrazolyl)hexadecanoylaminosulfonyl)butyric acid and [Lys14;Arg26,34]GLP-1-(7-37) peptide (65 mg). 19 mg of the title product was obtained.
  • the title compound was prepared as example 6 from 4-(16-(5-tetrazolyl)hexadecanoylaminosulfonyl)butyric acid and [Lys18;Arg26,34]GLP-1-(7-37) peptide (80 mg). 14.5 mg of the title product was obtained.
  • the title compound was prepared as example 6 from 4-(16-(4-(4-(5-tetrazolyl)phenyl)phenyloxy)hexadecanoylamino)-(4S)-4-tert-butoxycarbonylbutyric acid and [Arg34]GLP-1-(7-37) peptide (75 mg). 6.9 mg of the title product was obtained.
  • the title compound was prepared as example 6 from ⁇ 4-[17,17-bis-(1-H-tetrazol-5-yl)heptadecanoylamino]-(4S)-4-tert-butoxycarbonylbutyric acid and [Arg34]GLP-1-(7-37) peptide (150 mg). 7.8 mg of the title product was obtained.
  • the title compound was prepared as example 6 from (4- ⁇ 16-[4,5-bis(1H-tetrazol-5-yl)imidazol-1-yl]hexadecanoylamino ⁇ -(4S)-4-tert-butoxycarbonylbutyric acid and [Arg34]GLP-1-(7-37) peptide (100 mg). 7.2 mg of the title product was obtained.
  • the title compound was prepared as example 6 from (6- ⁇ 16-[1H-tetrazol-5-yl]hexadecanoyl ⁇ sulfamoylhexanoic acid and [Arg34]GLP-1-(7-37) peptide. 67.5 mg of the title product was obtained.
  • the title compound was prepared as example 6 from 18-(6- ⁇ 16-[1H-tetrazol-5-yl]hexadecanoylsulfamoyl ⁇ hexanoic acid and [Arg26,34, Lys18]GLP-1-(7-37)-peptide. 26.3 mg of the title product was obtained.

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