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Definitions

• Oligonucleotides are useful in therapeutic, diagnostic, research and nanomaterials applications.
• the use of naturally occurring nucleic acids e.g., unmodified DNA or RNA
• nucleic acids e.g., unmodified DNA or RNA
• RNA Ribonucleic acid
• the present invention encompasses the recognition that there exists a need for chirally controlled oligonucleotide compositions and new methods for synthesizing the same.
• the invention specifically encompasses the identification of the source of certain problems with prior methodologies for preparing chiral oligonucleotides, including problems that prohibit preparation of fully chirally controlled compositions, particularly compositions comprising a plurality of oligonucleotide types.
• the present invention provides chirally controlled oligonulcleotide compositions.
• the present invention provides methods of making chirally controlled oligonucleotides and chirally controlled oligonucleotide compositions. [0006] In some embodiments, the present invention provides methods of using chirally controlled oligonucleotide and chirally controlled oligonucleotide compositions.
• Aliphatic means a straight-chain (i.e., unbranched) or branched, substituted or unsubstituted hydrocarbon chain that is completely saturated or that contains one or more units of unsaturation, or a monocyclic hydrocarbon or bicyclic or polycyclic hydrocarbon that is completely saturated or that contains one or more units of unsaturation, but which is not aromatic (also referred to herein as “carbocycle” "cycloaliphatic” or “cycloalkyl”), that has a single point of attachment to the rest of the molecule.
• aliphatic groups contain 1-50 aliphatic carbon atoms.
• aliphatic groups contain 1-10 aliphatic carbon atoms. In some embodiments, aliphatic groups contain 1-6 aliphatic carbon atoms. In some embodiments, aliphatic groups contain 1-5 aliphatic carbon atoms. In other embodiments, aliphatic groups contain 1-4 aliphatic carbon atoms. In still other embodiments, aliphatic groups contain 1-3 aliphatic carbon atoms, and in yet other embodiments, aliphatic groups contain 1-2 aliphatic carbon atoms.
• cycloaliphatic refers to a monocyclic or bicyclic C3-C 10 hydrocarbon that is completely saturated or that contains one or more units of unsaturation, but which is not aromatic, that has a single point of attachment to the rest of the molecule.
• cycloaliphatic refers to a monocyclic C3-C6 hydrocarbon that is completely saturated or that contains one or more units of unsaturation, but which is not aromatic, that has a single point of attachment to the rest of the molecule.
• Suitable aliphatic groups include, but are not limited to, linear or branched, substituted or unsubstituted alkyl, alkenyl, alkynyl groups and hybrids thereof such as (cycloalkyl)alkyl, (cycloalkenyl)alkyl or (cycloalkyl)alkenyl.
• Alkylene refers to a bivalent alkyl group.
• An "alkylene chain” is a polymethylene group, i.e., -(CH 2 ) n -, wherein n is a positive integer, preferably from 1 to 6, from 1 to 4, from 1 to 3, from 1 to 2, or from 2 to 3.
• a substituted alkylene chain is a polymethylene group in which one or more methylene hydrogen atoms are replaced with a substituent. Suitable substituents include those described below for a substituted aliphatic group.
• alkenylene refers to a bivalent alkenyl group.
• a substituted alkenylene chain is a polymethylene group containing at least one double bond in which one or more hydrogen atoms are replaced with a substituent. Suitable substituents include those described below for a substituted aliphatic group.
• animal refers to any member of the animal kingdom. In some embodiments, “animal” refers to humans, at any stage of development. In some embodiments, “animal” refers to non-human animals, at any stage of development. In certain embodiments, the non-human animal is a mammal (e.g., a rodent, a mouse, a rat, a rabbit, a monkey, a dog, a cat, a sheep, cattle, a primate, and/or a pig). In some embodiments, animals include, but are not limited to, mammals, birds, reptiles, amphibians, fish, and/or worms. In some embodiments, an animal may be a transgenic animal, a genetically-engineered animal, and/or a clone.
• mammal e.g., a rodent, a mouse, a rat, a rabbit, a monkey, a dog, a cat, a sheep, cattle, a primate, and/or a pig.
• the terms “approximately” or “about” in reference to a number are generally taken to include numbers that fall within a range of 5%, 10%, 15%, or 20%) in either direction (greater than or less than) of the number unless otherwise stated or otherwise evident from the context (except where such number would be less than 0%> or exceed 100% of a possible value). In some embodiments, use of the term “about” in reference to dosages means ⁇ 5 mg/kg/day.
• Aryl The term “aryl” used alone or as part of a larger moiety as in “aralkyl,”
• aryloxy refers to monocyclic and bicyclic ring systems having a total of five to fourteen ring members, wherein at least one ring in the system is aromatic and wherein each ring in the system contains three to seven ring members.
• aryl may be used interchangeably with the term “aryl ring.”
• aryl refers to an aromatic ring system which includes, but not limited to, phenyl, biphenyl, naphthyl, anthracyl and the like, which may bear one or more substituents.
• aryl is a group in which an aromatic ring is fused to one or more non-aromatic rings, such as indanyl, phthalimidyl, naphthimidyl, phenanthridinyl, or tetrahydronaphthyl, and the like.
• Characteristic portion As used herein, the phrase a "characteristic portion" of a protein or polypeptide is one that contains a continuous stretch of amino acids, or a collection of continuous stretches of amino acids, that together are characteristic of a protein or polypeptide. Each such continuous stretch generally will contain at least two amino acids.
• a characteristic portion is one that, in addition to the sequence identity specified above, shares at least one functional characteristic with the relevant intact protein.
• Characteristic sequence is a sequence that is found in all members of a family of polypeptides or nucleic acids, and therefore can be used by those of ordinary skill in the art to define members of the family.
• Characteristic structural element refers to a distinctive structural element (e.g., core structure, collection of pendant moieties, sequence element, etc) that is found in all members of a family of polypeptides, small molecules, or nucleic acids, and therefore can be used by those of ordinary skill in the art to define members of the family.
• Comparable is used herein to describe two (or more) sets of conditions or circumstances that are sufficiently similar to one another to permit comparison of results obtained or phenomena observed.
• comparable sets of conditions or circumstances are characterized by a plurality of substantially identical features and one or a small number of varied features.
• sets of conditions are comparable to one another when characterized by a sufficient number and type of substantially identical features to warrant a reasonable conclusion that differences in results obtained or phenomena observed under the different sets of conditions or circumstances are caused by or indicative of the variation in those features that are varied.
• Dosing regimen refers to a set of unit doses (typically more than one) that are administered individually to a subject, typically separated by periods of time.
• a given therapeutic agent has a recommended dosing regimen, which may involve one or more doses.
• a dosing regimen comprises a plurality of doses each of which are separated from one another by a time period of the same length; in some embodiments, a dosing regime comprises a plurality of doses and at least two different time periods separating individual doses. In some embodiments, all doses within a dosing regimen are of the same unit dose amount.
• a dosing regimen comprises a first dose in a first dose amount, followed by one or more additional doses in a second dose amount different from the first dose amount. In some embodiments, a dosing regimen comprises a first dose in a first dose amount, followed by one or more additional doses in a second dose amount same as the first dose amount.
• addition or removal of one or more pendant moieties may generate a substituted compound equivalent to a parent reference compound.
• alteration of core structure for example by addition or removal of a small number of bonds (typically not more than 5, 4, 3, 2, or 1 bonds, and often only a single bond) may generate a substituted compound equivalent to a parent reference compound.
• equivalent compounds may be prepared by methods illustrated in general reaction schemes as, for example, described below, or by modifications thereof, using readily available starting materials, reagents and conventional or provided synthesis procedures. In these reactions, it is also possible to make use of variants, which are in themselves known, but are not mentioned here.
• Equivalent Dosage is used herein to compare dosages of different pharmaceutically active agents that effect the same biological result. Dosages of two different agents are considered to be “equivalent” to one another in accordance with the present invention if they achieve a comparable level or extent of the biological result. In some embodiments, equivalent dosages of different pharmaceutical agents for use in accordance with the present invention are determined using in vitro and/or in vivo assays as described herein.
• one or more lysosomal activating agents for use in accordance with the present invention is utilized at a dose equivalent to a dose of a reference lysosomal activating agent; in some such embodiments, the reference lysosomal activating agent for such purpose is selected from the group consisting of small molecule allosteric activators (e.g., pyrazolpyrimidines), imminosugars (e.g., isofagomine), antioxidants (e.g., n-acetyl-cysteine), and regulators of cellular trafficking (e.g., Rabla polypeptide).
• small molecule allosteric activators e.g., pyrazolpyrimidines
• imminosugars e.g., isofagomine
• antioxidants e.g., n-acetyl-cysteine
• regulators of cellular trafficking e.g., Rabla polypeptide
• Heteroaliphatic refers to an aliphatic group wherein one or more units selected from C, CH, C3 ⁇ 4, or C3 ⁇ 4 are independently replaced by a heteroatom.
• a heteroaliphatic group is heteroalkyl.
• a heteroaliphatic group is heteroalkenyl.
• Heteroaryl refers to groups having 5 to 10 ring atoms, preferably 5, 6, or 9 ring atoms; having 6, 10, or 14 ⁇ electrons shared in a cyclic array; and having, in addition to carbon atoms, from one to five heteroatoms.
• heteroatom refers to nitrogen, oxygen, or sulfur, and includes any oxidized form of nitrogen or sulfur, and any quaternized form of a basic nitrogen.
• Heteroaryl groups include, without limitation, thienyl, furanyl, pyrrolyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, pyridyl, pyridazinyl, pyrimidinyl, pyrazinyl, indolizinyl, purinyl, naphthyridinyl, and pteridinyl.
• heteroaryl and “heteroar-,” as used herein, also include groups in which a heteroaromatic ring is fused to one or more aryl, cycloaliphatic, or heterocyclyl rings, where the radical or point of attachment is on the heteroaromatic ring.
• Nonlimiting examples include indolyl, isoindolyl, benzothienyl, benzofuranyl, dibenzofuranyl, indazolyl, benzimidazolyl, benzthiazolyl, quinolyl, isoquinolyl, cinnolinyl, phthalazinyl, quinazolinyl, quinoxalinyl, 4H-quinolizinyl, carbazolyl, acridinyl, phenazinyl, phenothiazinyl, phenoxazinyl, tetrahydroquinolinyl, tetrahydroisoquinolinyl, and pyrido[2,3-b]-l,4-oxazin- 3(4H)-one.
• heteroaryl group may be mono- or bicyclic.
• heteroaryl may be used interchangeably with the terms “heteroaryl ring,” “heteroaryl group,” or “heteroaromatic,” any of which terms include rings that are optionally substituted.
• heteroarylkyl refers to an alkyl group substituted by a heteroaryl, wherein the alkyl and heteroaryl portions independently are optionally substituted.
• Heteroatom means one or more of oxygen, sulfur, nitrogen, phosphorus, or silicon (including, any oxidized form of nitrogen, sulfur, phosphorus, or silicon; the quaternized form of any basic nitrogen or; a substitutable nitrogen of a heterocyclic ring, for example N (as in 3,4-dihydro-2H-pyrrolyl), NH (as in pyrrolidinyl) or NR + (as in N- substituted pyrrolidinyl)).
• Heterocycle As used herein, the terms “heterocycle,” “heterocyclyl,”
• heterocyclic radical and “heterocyclic ring” are used interchangeably and refer to a stable 3- to 7-membered monocyclic or 7-10-membered bicyclic heterocyclic moiety that is either saturated or partially unsaturated, and having, in addition to carbon atoms, one or more, preferably one to four, heteroatoms, as defined above.
• nitrogen includes a substituted nitrogen.
• the nitrogen may be N (as in 3,4-dihydro-2H-pyrrolyl), NH (as in pyrrolidinyl), or NR (as in N-substituted pyrrolidinyl).
• a heterocyclic ring can be attached to its pendant group at any heteroatom or carbon atom that results in a stable structure and any of the ring atoms can be optionally substituted.
• saturated or partially unsaturated heterocyclic radicals include, without limitation, tetrahydrofuranyl, tetrahydrothiophenyl pyrrolidinyl, piperidinyl, pyrrolinyl, tetrahydroquinolinyl, tetrahydroisoquinolinyl, decahydroquinolinyl, oxazolidinyl, piperazinyl, dioxanyl, dioxolanyl, diazepinyl, oxazepinyl, thiazepinyl, morpholinyl, and quinuclidinyl.
• heterocycle refers to an alkyl group substituted by a heterocyclyl, wherein the alkyl and heterocyclyl portions independently are optionally substituted.
• Intraperitoneal The phrases "intraperitoneal administration” and “administered intraperitonealy” as used herein have their art-understood meaning referring to administration of a compound or composition into the peritoneum of a subject.
• In vitro As used herein, the term “m vitro” refers to events that occur in an artificial environment, e.g. , in a test tube or reaction vessel, in cell culture, etc. , rather than within an organism (e.g., animal, plant, and/or microbe).
• in vivo refers to events that occur within an organism (e.g., animal, plant, and/or microbe).
• Lower alkyl refers to a C 1-4 straight or branched alkyl group.
• exemplary lower alkyl groups are methyl, ethyl, propyl, isopropyl, butyl, isobutyl, and tert-butyl.
• Lower haloalkyl refers to a C 1-4 straight or branched alkyl group that is substituted with one or more halogen atoms.
• substituents of the invention may contain “optionally substituted” moieties.
• substituted whether preceded by the term “optionally” or not, means that one or more hydrogens of the designated moiety are replaced with a suitable substituent.
• an “optionally substituted” group may have a suitable substituent at each substitutable position of the group, and when more than one position in any given structure may be substituted with more than one substituent selected from a specified group, the substituent may be either the same or different at every position.
• Combinations of substituents envisioned by this invention are preferably those that result in the formation of stable or chemically feasible compounds.
• stable refers to compounds that are not substantially altered when subjected to conditions to allow for their production, detection, and, in certain embodiments, their recovery, purification, and use for one or more of the purposes disclosed herein.
• Suitable monovalent substituents on R° are independently halogen, -(CH 2 ) 0 _ 2 R', -(haloR'), -(CH 2 ) 0 _ 2 OH, -(CH 2 ) 0 _ 2 OR', -(CH 2 ) 0 _ 2 CH(OR') 2 ; -0(haloR*), -CN, -N 3 , -(CH 2 ) 0 2 C(0)R*, -(CH 2 ) 0 2 C(0)OH, -(CH 2 ) 0 2 C(0)OR*, -(CH 2 ) 0 2 SR*, -(CH 2 )o 2 SH, -(CH 2 )o 2 NH 2 , -(CH 2 ) 0 2 NHR', -(CH 2 ) 0 2 NR* 2 , -N0 2
• Suitable divalent substituents that are bound to vicinal substitutable carbons of an "optionally substituted” group include: -0(CR 2)2- 3 0-, wherein each independent occurrence of R is selected from hydrogen, Ci_6 aliphatic which may be substituted as defined below, or an unsubstituted 5-6-membered saturated, partially unsaturated, or aryl ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• Suitable substituents on the aliphatic group of R * include halogen, -R*, -(haloR*),
• each R* is unsubstituted or where preceded by "halo" is substituted only with one or more halogens, and is independently aliphatic, -CH 2 Ph, -0(CH 2 )o-iPh, or a 5-6-membered saturated, partially unsaturated, or aryl ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• Suitable substituents on a substitutable nitrogen of an "optionally substituted" group include -R ⁇ , -NR ⁇ 2 , -C(0)R ⁇ , -C(0)OR ⁇ , -C(0)C(0)R ⁇ , -C(0)CH 2 C(0)R ⁇ , -S(0) 2 R ⁇ , -S(0) 2 NR ⁇ 2 , -C(S)NR ⁇ 2 , -C(NH)NR ⁇ 2 , or -N(R ⁇ )S(0) 2 R ⁇ ; wherein each R ⁇ is independently hydrogen, Ci_ 6 aliphatic which may be substituted as defined below, unsubstituted -OPh, or an unsubstituted 5-6-membered saturated, partially unsaturated, or aryl ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur, or, notwithstanding the definition above, two independent occurrences of R ⁇ , taken together with their intervening atom(s
• Suitable substituents on the aliphatic group of R ⁇ are independently halogen, -R*,
• each R* is unsubstituted or where preceded by "halo" is substituted only with one or more halogens, and is independently Ci_ aliphatic, -CH 2 Ph, -O(CH 2 ) 0 iPh, or a 5-6- membered saturated, partially unsaturated, or aryl ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• oral administration and “administered orally” as used herein have their art-understood meaning referring to administration by mouth of a compound or composition.
• parenteral administration and “administered parenterally” as used herein have their art-understood meaning referring to modes of administration other than enteral and topical administration, usually by injection, and include, without limitation, intravenous, intramuscular, intraarterial, intrathecal, intracapsular, intraorbital, intracardiac, intradermal, intraperitoneal, transtracheal, subcutaneous, subcuticular, intraarticulare, subcapsular, subarachnoid, intraspinal, and intrasternal injection and infusion.
• Partially unsaturated refers to a ring moiety that includes at least one double or triple bond.
• the term “partially unsaturated” is intended to encompass rings having multiple sites of unsaturation, but is not intended to include aryl or heteroaryl moieties, as herein defined.
• composition refers to an active agent, formulated together with one or more pharmaceutically acceptable carriers.
• active agent is present in unit dose amount appropriate for administration in a therapeutic regimen that shows a statistically significant probability of achieving a predetermined therapeutic effect when administered to a relevant population.
• compositions may be specially formulated for administration in solid or liquid form, including those adapted for the following: oral administration, for example, drenches (aqueous or non-aqueous solutions or suspensions), tablets, e.g., those targeted for buccal, sublingual, and systemic absorption, boluses, powders, granules, pastes for application to the tongue; parenteral administration, for example, by subcutaneous, intramuscular, intravenous or epidural injection as, for example, a sterile solution or suspension, or sustained-release formulation; topical application, for example, as a cream, ointment, or a controlled-release patch or spray applied to the skin, lungs, or oral cavity; mtravaginally or intrarectally, for example, as a pessary, cream, or foam; sublingually; ocularly; transdermally; or nasally, pulmonary, and to other mucosal surfaces.
• oral administration for example, drenches (aqueous or non-aqueous solutions
• compositions, and/or dosage forms which are, within the scope of sound medical judgment, suitable for use in contact with the tissues of human beings and animals without excessive toxicity, irritation, allergic response, or other problem or complication, commensurate with a reasonable benefit/risk ratio.
• compositions or vehicles such as a liquid or solid filler, diluent, excipient, or solvent encapsulating material, involved in carrying or transporting the subject compound from one organ, or portion of the body, to another organ, or portion of the body.
• Each carrier must be “acceptable” in the sense of being compatible with the other ingredients of the formulation and not injurious to the patient.
• materials which can serve as pharmaceutically-acceptable carriers include: sugars, such as lactose, glucose and sucrose; starches, such as corn starch and potato starch; cellulose, and its derivatives, such as sodium carboxymethyl cellulose, ethyl cellulose and cellulose acetate; powdered tragacanth; malt; gelatin; talc; excipients, such as cocoa butter and suppository waxes; oils, such as peanut oil, cottonseed oil, safflower oil, sesame oil, olive oil, corn oil and soybean oil; glycols, such as propylene glycol; polyols, such as glycerin, sorbitol, mannitol and polyethylene glycol; esters, such as ethyl oleate and ethyl laurate; agar; buffering agents, such as magnesium hydroxide and aluminum hydroxide; alginic acid; pyrogen-free water; isotonic saline; Ring
• compositions that are appropriate for use in pharmaceutical contexts, i.e., salts which are, within the scope of sound medical judgment, suitable for use in contact with the tissues of humans and lower animals without undue toxicity, irritation, allergic response and the like, and are commensurate with a reasonable benefit/risk ratio.
• Pharmaceutically acceptable salts are well known in the art. For example, S. M. Berge, et al. describes pharmaceutically acceptable salts in detail in J. Pharmaceutical Sciences, 66: 1-19 (1977).
• pharmaceutically acceptable salt include, but are not limited to, nontoxic acid addition salts, which are salts of an amino group formed with inorganic acids such as hydrochloric acid, hydrobromic acid, phosphoric acid, sulfuric acid and perchloric acid or with organic acids such as acetic acid, maleic acid, tartaric acid, citric acid, succinic acid or malonic acid or by using other methods used in the art such as ion exchange.
• nontoxic acid addition salts which are salts of an amino group formed with inorganic acids such as hydrochloric acid, hydrobromic acid, phosphoric acid, sulfuric acid and perchloric acid or with organic acids such as acetic acid, maleic acid, tartaric acid, citric acid, succinic acid or malonic acid or by using other methods used in the art such as ion exchange.
• pharmaceutically acceptable salts include, but are not limited to, adipate, alginate, ascorbate, aspartate, benzenesulfonate, benzoate, bisulfate, borate, butyrate, camphorate, camphorsulfonate, citrate, cyclopentanepropionate, digluconate, dodecylsulfate, ethanesulfonate, formate, fumarate, glucoheptonate, glycerophosphate, gluconate, hemisulfate, heptanoate, hexanoate, hydroiodide, 2-hydroxy-ethanesulfonate, lactobionate, lactate, laurate, lauryl sulfate, malate, maleate, malonate, methanesulfonate, 2-naphthalenesulfonate, nicotinate, nitrate, oleate, oxalate, palmitate
• Representative alkali or alkaline earth metal salts include sodium, lithium, potassium, calcium, magnesium, and the like.
• pharmaceutically acceptable salts include, when appropriate, nontoxic ammonium, quaternary ammonium, and amine cations formed using counterions such as halide, hydroxide, carboxylate, sulfate, phosphate, nitrate, alkyl having from 1 to 6 carbon atoms, sulfonate and aryl sulfonate.
• Prodrug A general, a "prodrug,” as that term is used herein and as is understood in the art, is an entity that, when administered to an organism, is metabolized in the body to deliver an active (e.g., therapeutic or diagnostic) agent of interest. Typically, such metabolism involves removal of at least one "prodrug moiety" so that the active agent is formed.
• active e.g., therapeutic or diagnostic
• prodrug moieties see:
• prodrugs may be provided in any of a variety of forms, e.g., crystal forms, salt forms etc. In some embodiments, prodrugs are provided as pharmaceutically acceptable salts thereof.
• Protecting group The term "protecting group,” as used herein, is well known in the art and includes those described in detail in Protecting Groups in Organic Synthesis, T. W. Greene and P. G. M. Wuts, 3 rd edition, John Wiley & Sons, 1999, the entirety of which is incorporated herein by reference. Also included are those protecting groups specially adapted for nucleoside and nucleotide chemistry described in Current Protocols in Nucleic Acid Chemistry, edited by Serge L. Beaucage et al. 06/2012, the entirety of Chapter 2 is incorporated herein by reference.
• Suitable amino-protecting groups include methyl carbamate, ethyl carbamante, 9-fluorenylmethyl carbamate (Fmoc), 9-(2-sulfo)fluorenylmethyl carbamate, 9- (2,7-dibromo)fluoroenylmethyl carbamate, 2,7— di— i— butyl— [9— ( 10, 10-dioxo-l 0, 10,10,10- tetrahydrothioxanthyl)]methyl carbamate (DBD-Tmoc), 4-methoxyphenacyl carbamate (Phenoc), 2,2,2-trichloroethyl carbamate (Troc), 2-trimethylsilylethyl carbamate (Teoc), 2- phenylethyl carbamate (hZ), l-(l-adamantyl)-l-methylethyl carbamate (Adpoc), 1,1-dimethyl- 2-haloethyl carbamate,
• Suitably protected carboxylic acids further include, but are not limited to, silyl-, alkyl-, alkenyl-, aryl-, and arylalkyl-protected carboxylic acids.
• suitable silyl groups include trimethylsilyl, triethylsilyl, t-butyldimethylsilyl, t-butyldiphenylsilyl, triisopropylsilyl, and the like.
• suitable alkyl groups include methyl, benzyl, p- methoxybenzyl, 3,4-dimethoxybenzyl, trityl, t-butyl, tetrahydropyran-2-yl.
• suitable alkenyl groups include allyl.
• suitable aryl groups include optionally substituted phenyl, biphenyl, or naphthyl.
• suitable arylalkyl groups include optionally substituted benzyl (e.g., p-methoxybenzyl (MPM), 3,4-dimethoxybenzyl, O- nitrobenzyl, p-nitrobenzyl, p-halobenzyl, 2,6-dichlorobenzyl, p-cyanobenzyl), and 2- and 4- picolyl.
• Suitable hydroxyl protecting groups include methyl, methoxylmethyl (MOM), methylthiomethyl (MTM), t-butylthiomethyl, (phenyldimethylsilyl)methoxymethyl (SMOM), benzyloxymethyl (BOM), />-methoxybenzyloxymethyl (PMBM), (4-methoxyphenoxy)methyl (p-AOM), guaiacolmethyl (GUM), /-butoxymethyl, 4-pentenyloxymethyl (POM), siloxymethyl, 2-methoxyethoxymethyl (MEM), 2,2,2-trichloroethoxymethyl, bis(2- chloroethoxy)methyl, 2-(trimethylsilyl)ethoxymethyl (SEMOR), tetrahydropyranyl (THP), 3- bromotetrahydropyranyl, tetrahydrothiopyranyl, 1-methoxycyclohexyl, 4- methoxytetrahydropyranyl (MTHP), 4-meth
• the protecting groups include methylene acetal, ethylidene acetal, 1-i-butylethylidene ketal, 1-phenylethylidene ketal, (4- methoxyphenyl)ethylidene acetal, 2,2,2-trichloroethylidene acetal, acetonide, cyclopentylidene ketal, cyclohexylidene ketal, cycloheptylidene ketal, benzylidene acetal, p-methoxybenzylidene acetal, 2,4-dimethoxybenzylidene ketal, 3,4-dimethoxybenzylidene acetal, 2-nitrobenzylidene acetal, methoxymethylene acetal, ethoxymethylene acetal, dimethoxymethylene ortho ester, 1- methoxy ethylidene ortho ester
• a hydroxyl protecting group is acetyl, t-butyl, t- butoxymethyl, methoxymethyl, tetrahydropyranyl, 1 -ethoxyethyl, 1 -(2-chloroethoxy)ethyl, 2- trimethylsilylethyl, p-chlorophenyl, 2,4-dinitrophenyl, benzyl, benzoyl, p-phenylbenzoyl, 2,6- dichlorobenzyl, diphenylmethyl, p-nitrobenzyl, triphenylmethyl (trityl), 4,4'-dimethoxytrityl, trimethylsilyl, triethylsilyl, t-butyldimethylsilyl, t-butyldiphenylsilyl, triphenylsilyl, triisopropylsilyl, benzoylformate, chloroacetyl, t-butyl, t-
• each of the hydroxyl protecting groups is, independently selected from acetyl, benzyl, t- butyldimethylsilyl, t-butyldiphenylsilyl and 4,4'-dimethoxytrityl.
• the hydroxyl protecting group is selected from the group consisting of trityl, monomethoxytrityl and 4,4'-dimethoxytrityl group.
• a phosphorous protecting group is a group attached to the internucleotide phosphorous linkage throughout oligonucleotide synthesis. In some embodiments, the phosphorous protecting group is attached to the sulfur atom of the internucleotide phosphorothioate linkage. In some embodiments, the phosphorous protecting group is attached to the oxygen atom of the internucleotide phosphorothioate linkage. In some embodiments, the phosphorous protecting group is attached to the oxygen atom of the internucleotide phosphate linkage.
• the phosphorous protecting group is 2- cyanoethyl (CE or Cne), 2-trimethylsilylethyl, 2-nitroethyl, 2-sulfonylethyl, methyl, benzyl, o- nitrobenzyl, 2-(p-nitrophenyl)ethyl (NPE or Npe), 2-phenylethyl, 3-(N-tert-butylcarboxamido)- 1 -propyl, 4-oxopentyl, 4-methylthio-l-butyl, 2-cyano-l,l-dimethylethyl, 4-N-methylaminobutyl, 3 -(2-pyridyl)-l -propyl, 2-[N-methyl-jV-(2-pyridyl)]aminoethyl, 2-(N-formyl,N- methyl)aminoethyl, 4-[N-methyl-iV-(2,2,2-trifluoroacety
• Protein refers to a polypeptide ⁇ i.e., a string of at least two amino acids linked to one another by peptide bonds).
• proteins include only naturally-occurring amino acids.
• proteins include one or more non-naturally-occurring amino acids (e.g., moieties that form one or more peptide bonds with adjacent amino acids).
• one or more residues in a protein chain contain a non-amino-acid moiety (e.g., a glycan, etc).
• a protein includes more than one polypeptide chain, for example linked by one or more disulfide bonds or associated by other means.
• proteins contain L-amino acids, D-amino acids, or both; in some embodiments, proteins contain one or more amino acid modifications or analogs known in the art. Useful modifications include, e.g., terminal acetylation, amidation, methylation, etc.
• the term "peptide” is generally used to refer to a polypeptide having a length of less than about 100 amino acids, less than about 50 amino acids, less than 20 amino acids, or less than 10 amino acids.
• proteins are antibodies, antibody fragments, biologically active portions thereof, and/or characteristic portions thereof.
• sample refers to a biological sample obtained or derived from a source of interest, as described herein.
• a source of interest comprises an organism, such as an animal or human.
• a biological sample comprises biological tissue or fluid.
• a biological sample is or comprises bone marrow; blood; blood cells; ascites; tissue or fine needle biopsy samples; cell- containing body fluids; free floating nucleic acids; sputum; saliva; urine; cerebrospinal fluid, peritoneal fluid; pleural fluid; feces; lymph; gynecological fluids; skin swabs; vaginal swabs; oral swabs; nasal swabs; washings or lavages such as a ductal lavages or broncheoalveolar lavages; aspirates; scrapings; bone marrow specimens; tissue biopsy specimens; surgical specimens; feces, other body fluids, secretions, and/or excretions; and/or cells therefrom, etc.
• a biological sample is or comprises cells obtained from an individual.
• a sample is a "primary sample" obtained directly from a source of interest by any appropriate means.
• a primary biological sample is obtained by methods selected from the group consisting of biopsy (e.g., fine needle aspiration or tissue biopsy), surgery, collection of body fluid (e.g., blood, lymph, feces etc.), etc.
• body fluid e.g., blood, lymph, feces etc.
• sample refers to a preparation that is obtained by processing (e.g., by removing one or more components of and/or by adding one or more agents to) a primary sample. For example, filtering using a semi-permeable membrane.
• Such a "processed sample” may comprise, for example nucleic acids or proteins extracted from a sample or obtained by subjecting a primary sample to techniques such as amplification or reverse transcription of mRNA, isolation and/or purification of certain components, etc.
• stereochemically isomeric forms refers to different compounds made up of the same atoms bonded by the same sequence of bonds but having different three-dimensional structures which are not interchangeable.
• provided chemical compositions may be or include pure preparations of individual stereochemically isomeric forms of a compound; in some embodiments, provided chemical compositions may be or include mixtures of two or more stereochemically isomeric forms of the compound. In certain embodiments, such mixtures contain equal amounts of different stereochemically isomeric forms; in certain embodiments, such mixtures contain different amounts of at least two different stereochemically isomeric forms.
• a chemical composition may contain all diastereomers and/or enantiomers of the compound. In some embodiments, a chemical composition may contain less than all diastereomers and/or enantiomers of a compound. In some embodiments, if a particular enantiomer of a compound of the present invention is desired, it may be prepared, for example, by asymmetric synthesis, or by derivation with a chiral auxiliary, where the resulting diastereomeric mixture is separated and the auxiliary group cleaved to provide the pure desired enantiomers. Alternatively, where the molecule contains a basic functional group, such as amino, diastereomeric salts are formed with an appropriate optically-active acid, and resolved, for example, by fractional crystallization.
• Subject refers to any organism to which a provided compound or composition is administered in accordance with the present invention e.g., for experimental, diagnostic, prophylactic, and/or therapeutic purposes. Typical subjects include animals (e.g., mammals such as mice, rats, rabbits, non-human primates, and humans; insects; worms; etc.) and plants. In some embodiments, a subject may be suffering from, and/or susceptible to a disease, disorder, and/or condition.
• animals e.g., mammals such as mice, rats, rabbits, non-human primates, and humans; insects; worms; etc.
• the term “substantially” refers to the qualitative condition of exhibiting total or near-total extent or degree of a characteristic or property of interest.
• One of ordinary skill in the biological arts will understand that biological and chemical phenomena rarely, if ever, go to completion and/or proceed to completeness or achieve or avoid an absolute result.
• the term “substantially” is therefore used herein to capture the potential lack of completeness inherent in many biological and/or chemical phenomena.
• Susceptible to An individual who is "susceptible to" a disease, disorder, and/or condition is one who has a higher risk of developing the disease, disorder, and/or condition than does a member of the general public. In some embodiments, an individual who is susceptible to a disease, disorder and/or condition may not have been diagnosed with the disease, disorder, and/or condition. In some embodiments, an individual who is susceptible to a disease, disorder, and/or condition may exhibit symptoms of the disease, disorder, and/or condition. In some embodiments, an individual who is susceptible to a disease, disorder, and/or condition may not exhibit symptoms of the disease, disorder, and/or condition.
• an individual who is susceptible to a disease, disorder, and/or condition will develop the disease, disorder, and/or condition. In some embodiments, an individual who is susceptible to a disease, disorder, and/or condition will not develop the disease, disorder, and/or condition.
• Systemic The phrases “systemic administration,” “administered systemically,”
• peripheral administration and “administered peripherally” as used herein have their art- understood meaning referring to administration of a compound or composition such that it enters the recipient's system.
• Tautomeric forms The phrase "tautomeric forms," as used herein, is used to describe different isomeric forms of organic compounds that are capable of facile interconversion. Tautomers may be characterized by the formal migration of a hydrogen atom or proton, accompanied by a switch of a single bond and adjacent double bond. In some embodiments, tautomers may result from prototropic tautomerism (i.e., the relocation of a proton). In some embodiments, tautomers may result from valence tautomerism (i.e., the rapid reorganization of bonding electrons). All such tautomeric forms are intended to be included within the scope of the present invention.
• tautomeric forms of a compound exist in mobile equilibrium with each other, so that attempts to prepare the separate substances results in the formation of a mixture.
• tautomeric forms of a compound are separable and isolatable compounds.
• chemical compositions may be provided that are or include pure preparations of a single tautomeric form of a compound.
• chemical compositions may be provided as mixtures of two or more tautomeric forms of a compound. In certain embodiments, such mixtures contain equal amounts of different tautomeric forms; in certain embodiments, such mixtures contain different amounts of at least two different tautomeric forms of a compound.
• chemical compositions may contain all tautomeric forms of a compound. In some embodiments of the invention, chemical compositions may contain less than all tautomeric forms of a compound. In some embodiments of the invention, chemical compositions may contain one or more tautomeric forms of a compound in amounts that vary over time as a result of interconversion. In some embodiments of the invention, the tautomerism is keto-enol tautomerism.
• keto-enol tautomer can be "trapped” (i.e., chemically modified such that it remains in the "enol” form) using any suitable reagent known in the chemical arts in to provide an enol derivative that may subsequently be isolated using one or more suitable techniques known in the art.
• the present invention encompasses all tautomeric forms of relevant compounds, whether in pure form or in admixture with one another.
• Therapeutic agent refers to any agent that, when administered to a subject, has a therapeutic effect and/or elicits a desired biological and/or pharmacological effect.
• a therapeutic agent is any substance that can be used to alleviate, ameliorate, relieve, inhibit, prevent, delay onset of, reduce severity of, and/or reduce incidence of one or more symptoms or features of a disease, disorder, and/or condition.
• therapeutically effective amount means an amount of a substance (e.g., a therapeutic agent, composition, and/or formulation) that elicits a desired biological response when administered as part of a therapeutic regimen.
• a therapeutically effective amount of a substance is an amount that is sufficient, when administered to a subject suffering from or susceptible to a disease, disorder, and/or condition, to treat, diagnose, prevent, and/or delay the onset of the disease, disorder, and/or condition.
• the effective amount of a substance may vary depending on such factors as the desired biological endpoint, the substance to be delivered, the target cell or tissue, etc.
• the effective amount of compound in a formulation to treat a disease, disorder, and/or condition is the amount that alleviates, ameliorates, relieves, inhibits, prevents, delays onset of, reduces severity of and/or reduces incidence of one or more symptoms or features of the disease, disorder, and/or condition.
• a therapeutically effective amount is administered in a single dose; in some embodiments, multiple unit doses are required to deliver a therapeutically effective amount.
• Treat refers to any method used to partially or completely alleviate, ameliorate, relieve, inhibit, prevent, delay onset of, reduce severity of, and/or reduce incidence of one or more symptoms or features of a disease, disorder, and/or condition.
• Treatment may be administered to a subject who does not exhibit signs of a disease, disorder, and/or condition.
• treatment may be administered to a subject who exhibits only early signs of the disease, disorder, and/or condition, for example for the purpose of decreasing the risk of developing pathology associated with the disease, disorder, and/or condition.
• Unsaturated means that a moiety has one or more units of unsaturation.
• Unit dose refers to an amount administered as a single dose and/or in a physically discrete unit of a pharmaceutical composition.
• a unit dose contains a predetermined quantity of an active agent.
• a unit dose contains an entire single dose of the agent.
• more than one unit dose is administered to achieve a total single dose.
• administration of multiple unit doses is required, or expected to be required, in order to achieve an intended effect.
• a unit dose may be, for example, a volume of liquid (e.g., an acceptable carrier) containing a predetermined quantity of one or more therapeutic agents, a predetermined amount of one or more therapeutic agents in solid form, a sustained release formulation or drug delivery device containing a predetermined amount of one or more therapeutic agents, etc. It will be appreciated that a unit dose may be present in a formulation that includes any of a variety of components in addition to the therapeutic agent(s). For example, acceptable carriers (e.g., pharmaceutically acceptable carriers), diluents, stabilizers, buffers, preservatives, etc., may be included as described infra.
• acceptable carriers e.g., pharmaceutically acceptable carriers
• diluents e.g., diluents, stabilizers, buffers, preservatives, etc.
• a total appropriate daily dosage of a particular therapeutic agent may comprise a portion, or a plurality, of unit doses, and may be decided, for example, by the attending physician within the scope of sound medical judgment.
• the specific effective dose level for any particular subject or organism may depend upon a variety of factors including the disorder being treated and the severity of the disorder; activity of specific active compound employed; specific composition employed; age, body weight, general health, sex and diet of the subject; time of administration, and rate of excretion of the specific active compound employed; duration of the treatment; drugs and/or additional therapies used in combination or coincidental with specific compound(s) employed, and like factors well known in the medical arts.
• Wild-type As used herein, the term "wild-type” has its art-understood meaning that refers to an entity having a structure and/or activity as found in nature in a "normal” (as contrasted with mutant, diseased, altered, etc) state or context. Those of ordinary skill in the art will appreciate that wild type genes and polypeptides often exist in multiple different forms (e.g., alleles).
• Nucleic acid includes any nucleotides, analogs thereof, and polymers thereof.
• polynucleotide refer to a polymeric form of nucleotides of any length, either ribonucleotides (RNA) or deoxyribonucleotides (DNA). These terms refer to the primary structure of the molecules and, thus, include double- and single- stranded DNA, and double- and single-stranded RNA.
• RNA or DNA made from nucleotide analogs and modified polynucleotides such as, though not limited to, methylated, protected and/or capped nucleotides or polynucleotides.
• RNA poly- or oligo-ribonucleotides
• DNA poly- or oligo- deoxyribonucleotides
• RNA or DNA derived from N-glycosides or C-glycosides of nucleobases and/or modified nucleobases
• nucleic acids derived from sugars and/or modified sugars and nucleic acids derived from phosphate bridges and/or modified phosphorus-atom bridges (also referred to herein as "internucleotide linkages").
• the term encompasses nucleic acids containing any combinations of nucleobases, modified nucleobases, sugars, modified sugars, phosphate bridges or modified phosphorus atom bridges.
• Examples include, and are not limited to, nucleic acids containing ribose moieties, the nucleic acids containing deoxy-ribose moieties, nucleic acids containing both ribose and deoxyribose moieties, nucleic acids containing ribose and modified ribose moieties.
• the prefix poly- refers to a nucleic acid containing 2 to about 10,000 nucleotide monomer units and wherein the prefix oligo- refers to a nucleic acid containing 2 to about 200 nucleotide monomer units.
• Nucleotide refers to a monomeric unit of a polynucleotide that consists of a heterocyclic base, a sugar, and one or more phosphate groups or phosphorus-containing internucleotidic linkages.
• the naturally occurring bases (guanine, (G), adenine, (A), cytosine, (C ), thymine, (T), and uracil (U)) are derivatives of purine or pyrimidine, though it should be understood that naturally and non-naturally occurring base analogs are also included.
• the naturally occurring sugar is the pentose (five-carbon sugar) deoxyribose (which forms DNA) or ribose (which forms RNA), though it should be understood that naturally and non-naturally occurring sugar analogs are also included.
• Nucleotides are linked via internucleotidic linkages to form nucleic acids, or polynucleotides. Many internucleotidic linkages are known in the art (such as, though not limited to, phosphate, phosphorothioates, boranophosphates and the like).
• Artificial nucleic acids include PNAs (peptide nucleic acids), phosphotriesters, phosphorothionates, H-phosphonates, phosphoramidates, boranophosphates, methylphosphonates, phosphonoacetates, thiophosphonoacetates and other variants of the phosphate backbone of native nucleic acids, such as those described herein.
• nucleoside refers to a moiety wherein a nucleobase or a modified nucleobase is covalently bound to a sugar or modified sugar.
• sugar refers to a monosaccharide in closed and/or open form.
• Sugars include, but are not limited to, ribose, deoxyribose, pentofuranose, pentopyranose, and hexopyranose moieties.
• the term also encompasses structural analogs used in lieu of conventional sugar molecules, such as glycol, polymer of which forms the backbone of the nucleic acid analog, glycol nucleic acid (“GNA").
• Modified sugar refers to a moiety that can replace a sugar.
• the modified sugar mimics the spatial arrangement, electronic properties, or some other physicochemical property of a sugar.
• nucleobase refers to the parts of nucleic acids that are involved in the hydrogen-bonding that binds one nucleic acid strand to another complementary strand in a sequence specific manner.
• the most common naturally-occurring nucleobases are adenine (A), guanine (G), uracil (U), cytosine (C), and thymine (T).
• the naturally-occurring nucleobases are modified adenine, guanine, uracil, cytosine, or thymine.
• the naturally-occurring nucleobases are methylated adenine, guanine, uracil, cytosine, or thymine.
• a nucleobase is a "modified nucleobase," e.g., a nucleobase other than adenine (A), guanine (G), uracil (U), cytosine (C), and thymine (T).
• the modified nucleobases are methylated adenine, guanine, uracil, cytosine, or thymine.
• the modified nucleobase mimics the spatial arrangement, electronic properties, or some other physicochemical property of the nucleobase and retains the property of hydrogen-bonding that binds one nucleic acid strand to another in a sequence specific manner.
• a modified nucleobase can pair with all of the five naturally occurring bases (uracil, thymine, adenine, cytosine, or guanine) without substantially affecting the melting behavior, recognition by intracellular enzymes or activity of the oligonucleotide duplex.
• Chiral ligand The term "chiral ligand" or “chiral auxiliary” refers to a moiety that is chiral and can be incorporated into a reaction so that the reaction can be carried out with certain stereoselectivity.
• Condensing reagent In a condensation reaction, the term “condensing reagent” refers to a reagent that activates a less reactive site and renders it more susceptible to attack by another reagent. In some embodiments, such another reagent is a nucleophile.
• Blocking group refers to a group that masks the reactivity of a functional group.
• the functional group can be subsequently unmasked by removal of the blocking group.
• a blocking group is a protecting group.
• moiety refers to a specific segment or functional group of a molecule. Chemical moieties are often recognized chemical entities embedded in or appended to a molecule.
• Solid support refers to any support which enables synthesis of nucleic acids.
• the term refers to a glass or a polymer, that is insoluble in the media employed in the reaction steps performed to synthesize nucleic acids, and is derivatized to comprise reactive groups.
• the solid support is Highly Cross-linked Polystyrene (HCP) or Controlled Pore Glass (CPG).
• the solid support is Controlled Pore Glass (CPG).
• the solid support is hybrid support of Controlled Pore Glass (CPG) and Highly Cross-linked Polystyrene (HCP).
• Linking moiety refers to any moiety optionally positioned between the terminal nucleoside and the solid support or between the terminal nucleoside and another nucleoside, nucleotide, or nucleic acid.
• DNA molecule refers to the polymeric form of deoxyribonucleotides (adenine, guanine, thymine, or cytosine) in its either single stranded form or a double-stranded helix. This term refers only to the primary and secondary structure of the molecule, and does not limit it to any particular tertiary forms. Thus, this term includes double- stranded DNA found, inter alia, in linear DNA molecules (e.g., restriction fragments), viruses, plasmids, and chromosomes.
• linear DNA molecules e.g., restriction fragments
• viruses e.g., plasmids, and chromosomes.
• Coding sequence A DNA "coding sequence” or “coding region” is a double- stranded DNA sequence which is transcribed and translated into a polypeptide in vivo when placed under the control of appropriate expression control sequences.
• the boundaries of the coding sequence are determined by a start codon at the 5' (amino) terminus and a translation stop codon at the 3' (carboxyl) terminus.
• a coding sequence can include, but is not limited to, prokaryotic sequences, cDNA from eukaryotic mR A, genomic DNA sequences from eukaryotic (e.g., mammalian) DNA, and synthetic DNA sequences.
• a polyadenylation signal and transcription termination sequence is, usually, be located 3' to the coding sequence.
• non-coding sequence or “non-coding region” refers to regions of a polynucleotide sequence that are not translated into amino acids (e.g. 5' and 3' un-translated regions).
• Reading frame refers to one of the six possible reading frames, three in each direction, of the double stranded DNA molecule. The reading frame that is used determines which codons are used to encode amino acids within the coding sequence of a DNA molecule.
• an antisense nucleic acid molecule comprises a nucleotide sequence which is complementary to a "sense" nucleic acid encoding a protein, e.g., complementary to the coding strand of a double-stranded cDNA molecule, complementary to an mRNA sequence or complementary to the coding strand of a gene. Accordingly, an antisense nucleic acid molecule can associate via hydrogen bonds to a sense nucleic acid molecule.
• Wobble position refers to the third position of a codon. Mutations in a DNA molecule within the wobble position of a codon, in some embodiments, result in silent or conservative mutations at the amino acid level. For example, there are four codons that encode Glycine, i.e., GGU, GGC, GGA and GGG, thus mutation of any wobble position nucleotide, to any other nucleotide selected from A, U , C and G, does not result in a change at the amino acid level of the encoded protein and, therefore, is a silent substitution.
• Silent substitution a "silent substitution” or “silent mutation” is one in which a nucleotide within a codon is modified, but does not result in a change in the amino acid residue encoded by the codon. Examples include mutations in the third position of a codon, as well in the first position of certain codons such as in the codon "CGG” which, when mutated to AGG, still encodes Arg.
• Gene refers to a DNA molecule, or portion of a DNA molecule, that encodes a protein or a portion thereof.
• the DNA molecule can contain an open reading frame encoding the protein (as exon sequences) and can further include intron sequences.
• intron refers to a DNA sequence present in a given gene which is not translated into protein and is found in some, but not all cases, between exons. It can be desirable for the gene to be operably linked to, (or it can comprise), one or more promoters, enhancers, repressors and/or other regulatory sequences to modulate the activity or expression of the gene, as is well known in the art.
• Complementary DNA As used herein, a “complementary DNA” or “cDNA” includes recombinant polynucleotides synthesized by reverse transcription of mRNA and from which intervening sequences (introns) have been removed.
• Homology refers to sequence similarity between two nucleic acid molecules. Homology and identity can each be determined by comparing a position in each sequence which can be aligned for purposes of comparison. When an equivalent position in the compared sequences is occupied by the same base, then the molecules are identical at that position; when the equivalent site occupied by the same or a similar nucleic acid residue (e.g., similar in steric and/or electronic nature), then the molecules can be referred to as homologous (similar) at that position.
• Expression as a percentage of homology/similarity or identity refers to a function of the number of identical or similar nucleic acids at positions shared by the compared sequences.
• a sequence which is "unrelated” or “nonhomologous” shares less than 40% identity, less than 35% identity, less than 30% identity, or less than 25% identity with a sequence described herein. In comparing two sequences, the absence of residues (amino acids or nucleic acids) or presence of extra residues also decreases the identity and homology/similarity.
• the term "homology” describes a mathematically based comparison of sequence similarities which is used to identify genes with similar functions or motifs.
• the nucleic acid sequences described herein can be used as a "query sequence” to perform a search against public databases, for example, to identify other family members, related sequences or homologs.
• searches can be performed using the NBLAST and XBLAST programs (version 2.0) of Altschul, et al. (1990) J. Mol. Biol. 215:403- 10.
• Gapped BLAST can be utilized as described in Altschul et al., (1997) Nucleic Acids Res. 25(17):3389-3402.
• the default parameters of the respective programs e.g., XBLAST and BLAST
• XBLAST and BLAST See www.ncbi.nlm.nih.gov.
• Identity means the percentage of identical nucleotide residues at corresponding positions in two or more sequences when the sequences are aligned to maximize sequence matching, i.e., taking into account gaps and insertions. Identity can be readily calculated by known methods, including but not limited to those described in (Computational Molecular Biology, Lesk, A. M., ed., Oxford University Press, New York, 1988; Biocomputing: Informatics and Genome Projects, Smith, D. W., ed., Academic Press, New York, 1993; Computer Analysis of Sequence Data, Part I, Griffin, A. M., and Griffin, H.
• Computer program methods to determine identity between two sequences include, but are not limited to, the GCG program package (Devereux, J., et al, Nucleic Acids Research 12(1): 387 (1984)), BLASTP, BLASTN, and FASTA (Altschul, S. F. et al., J. Molec. Biol. 215: 403-410 (1990) and Altschul et al. Nuc. Acids Res. 25: 3389-3402 (1997)).
• the BLAST X program is publicly available from NCBI and other sources (BLAST Manual, Altschul, S., et al, NCBI NLM NIH Bethesda, Md. 20894; Altschul, S., et al, J. Mol. Biol. 215: 403-410 (1990).
• the well-known Smith Waterman algorithm can also be used to determine identity.
• Heterologous region of a DNA sequence is an identifiable segment of DNA within a larger DNA sequence that is not found in association with the larger sequence in nature.
• the gene can usually be flanked by DNA that does not flank the mammalian genomic DNA in the genome of the source organism.
• Another example of a heterologous coding sequence is a sequence where the coding sequence itself is not found in nature (e.g., a cDNA where the genomic coding sequence contains introns or synthetic sequences having codons or motifs different than the unmodified gene). Allelic variations or naturally-occurring mutational events do not give rise to a heterologous region of DNA as defined herein.
• Transition mutations refers to base changes in a
• a pyrimidine cytidine (C) or thymidine (T) is replaced by another pyrimidine
• a purine adenosine (A) or guanosine (G) is replaced by another purine.
• Transversion mutations refers to base changes in a DNA sequence in which a pyrimidine (cytidine (C) or thymidine (T) is replaced by a purine
• adenosine (A) or guanosine (G), or a purine is replaced by a pyrimidine.
• Oligonucleotide refers to a polymer or oligomer of nucleotide monomers, containing any combination of nucleobases, modified nucleobases, sugars, modified sugars, phosphate bridges, or modified phosphorus atom bridges (also referred to herein as "internucleotidic linkage”, defined further herein).
• Oligonucleotides can be single-stranded or double-stranded.
• oligonucleotide strand encompasses a single-stranded oligonucleotide.
• a single-stranded oligonucleotide can have double-stranded regions and a double-stranded oligonucleotide can have single-stranded regions.
• oligonucleotides include, but are not limited to structural genes, genes including control and termination regions, self-replicating systems such as viral or plasmid DNA, single-stranded and double-stranded siRNAs and other RNA interference reagents (RNAi agents or iRNA agents), shRNA, antisense oligonucleotides, ribozymes, microRNAs, microRNA mimics, supermirs, aptamers, antimirs, antagomirs, Ul adaptors, triplex-forming oligonucleotides, G-quadruplex oligonucleotides, RNA activators, immuno-stimulatory oligonucleotides, and decoy oligonucleotides.
• RNAi agents or iRNA agents RNA interference reagents
• shRNA antisense oligonucleotides
• ribozymes ribozymes
• microRNAs microRNA mimics
• supermirs supermirs
• Double-stranded and single-stranded oligonucleotides that are effective in inducing RNA interference are also referred to as siRNA, RNAi agent, or iRNA agent, herein.
• these RNA interference inducing oligonucleotides associate with a cytoplasmic multi-protein complex known as RNAi-induced silencing complex (RISC).
• RISC RNAi-induced silencing complex
• single-stranded and double-stranded RNAi agents are sufficiently long that they can be cleaved by an endogenous molecule, e.g., by Dicer, to produce smaller oligonucleotides that can enter the RISC machinery and participate in RISC mediated cleavage of a target sequence, e.g. a target mRNA.
• an endogenous molecule e.g., by Dicer
• Oligonucleotides of the present invention can be of various lengths. In particular embodiments, oligonucleotides can range from about 2 to about 200 nucleotides in length. In various related embodiments, oligonucleotides, single-stranded, double-stranded, and triple- stranded, can range in length from about 4 to about 10 nucleotides, from about 10 to about 50 nucleotides, from about 20 to about 50 nucleotides, from about 15 to about 30 nucleotides, from about 20 to about 30 nucleotides in length. In some embodiments, the oligonucleotide is from about 9 to about 39 nucleotides in length.
• the oligonucleotide is at least 4 nucleotides in length. In some embodiments, the oligonucleotide is at least 5 nucleotides in length. In some embodiments, the oligonucleotide is at least 6 nucleotides in length. In some embodiments, the oligonucleotide is at least 7 nucleotides in length. In some embodiments, the oligonucleotide is at least 8 nucleotides in length. In some embodiments, the oligonucleotide is at least 9 nucleotides in length. In some embodiments, the oligonucleotide is at least 10 nucleotides in length.
• the oligonucleotide is at least 11 nucleotides in length. In some embodiments, the oligonucleotide is at least 12 nucleotides in length. In some embodiments, the oligonucleotide is at least 1 nucleotides in length. In some embodiments, the oligonucleotide is at least 20 nucleotides in length. In some embodiments, the oligonucleotide is at least 25 nucleotides in length. In some embodiments, the oligonucleotide is at least 30 nucleotides in length. In some embodiments, the oligonucleotide is a duplex of complementary strands of at least 18 nucleotides in length. In some embodiments, the oligonucleotide is a duplex of complementary strands of at least 21 nucleotides in length.
• Internucleotidic linkage refers generally to the phosphorus-containing linkage between nucleotide units of an oligonucleotide, and is interchangeable with "inter-sugar linkage" and "phosphorus atom bridge,” as used above and herein.
• an internucleotidic linkage is a phosphodiester linkage, as found in naturally occurring DNA and RNA molecules.
• an internucleotidic linkage is a "modified internucleotidic linkage" wherein each oxygen atom of the phosphodiester linkage is optionally and independently replaced by an organic or inorganic moiety.
• an mtemucleotidic linkage is a phosphotriester linkage, phosphorothioate diester
• linkage or modified phosphorothioate triester linkage. It is understood by a person of ordinary skill in the art that the mtemucleotidic linkage may exist as an anion or cation at a given pH due to the existence of acid or base moieties in the linkage.
• each of s, si, s2, s3, s4, s5, s6 and s7 independently represents the following modified mtemucleotidic linkage as illustrated in Table 1 , below.
• Table 1 Exemplary Modified Internucleotidic Linkage.
• (Rp, Sp)-ATsCslGA has 1) a phosphorothioate internucleotidic
• the ?p/Sp designations preceding an oligonucleotide sequence describe the configurations of chiral linkage phosphorus atoms in the internucleotidic linkages sequentially from 5' to 3' of the oligonucleotide sequence. For instance, in ( ?p, Sp)-ATsCslGA, the phosphorus in the "s" linkage between T and C has Rp configuration and the phosphorus in "si" linkage between C and G has Sp configuration.
• All-( ?p) or “All-(Sp)” is used to indicate that all chiral linkage phosphorus atoms in oligonucleotide have the same Rp or Sp configuration, respectively. For instance, All-( ?p)-
• GsCsCsTsCsAsGsTsCsTsGsCsTsTsCsGsCsAsCsC indicates that all the chiral linkage phosphorus atoms in the oligonucleotide have configuration; All-(Sp)- GsCsCsTsCsAsGsTsCsTsGsCsTsTsCsGsCsAsCsC indicates that all the chiral linkage phosphorus atoms in the oligonucleotide have Sp configuration.
• Oligonucleotide type is used to define an oligonucleotide that has a particular base sequence, pattern of backbone linkages (i.e., pattern of internucleotidic linkage types, for example, phosphate, phosphorothioate, etc), pattern of backbone chiral centers (i.e. pattern of linkage phosphorus stereochemistry (i?p/Sp)), and pattern of backbone phosphorus modifications (e.g., pattern of "-XLR 1 " groups in formula I). Oligonucleotides of a common designated "type" are structurally identical to one another.
• pattern of backbone linkages i.e., pattern of internucleotidic linkage types, for example, phosphate, phosphorothioate, etc
• pattern of backbone chiral centers i.e. pattern of linkage phosphorus stereochemistry (i?p/Sp)
• pattern of backbone phosphorus modifications e.g., pattern of "-XLR 1 " groups in
• each nucleotide unit of the oligonucleotide strand can be designed and/or selected in advance to have a particular stereochemistry at the linkage phosphorus and/or a particular modification at the linkage phosphorus, and/or a particular base, and/or a particular sugar.
• an oligonucleotide strand is designed and/or selected in advance to have a particular combination of stereocenters at the linkage phosphorus.
• an oligonucleotide strand is designed and/or determined to have a particular combination of modifications at the linkage phosphorus. In some embodiments, an oligonucleotide strand is designed and/or selected to have a particular combination of bases. In some embodiments, an oligonucleotide strand is designed and/or selected to have a particular combination of one or more of the above structural characteristics.
• the present invention provides compositions comprising or consisting of a plurality of oligonucleotide molecules (e.g., chirally controlled oligonucleotide compositions). In some embodiments, all such molecules are of the same type (i.e., are structurally identical to one another). In many embodiments, however, provided compositions comprise a plurality of oligonucleotides of different types, typically in predetermined relative amounts.
• Chiral control refers to an ability to control the stereochemical designation of every chiral linkage phosphorus within an oligonucleotide strand.
• the phrase “chirally controlled oligonucleotide” refers to an oligonucleotide which exists in a single diastereomeric form with respect to the chiral linkage phosphorus.
• Chirally controlled oligonucleotide composition As used herein, the phrase “chirally controlled oligonucleotide composition” refers to an oligonucleotide composition that contains predetermined levels of individual oligonucleotide types.
• a chirally controlled oligonucleotide composition comprises one oligonucleotide type. In some embodiments, a chirally controlled oligonucleotide composition comprises more than one oligonucleotide type. In some embodiments, a chirally controlled oligonucleotide composition comprises a mixture of multiple oligonucleotide types. Exemplary chirally controlled oligonucleotide compositions are described further herein.
• Chirally pure as used herein, the phrase "chirally pure” is used to describe a chirally controlled oligonucleotide composition in which all of the oligonucleotides exist in a single diastereomeric form with respect to the linkage phosphorus.
• Chirally uniform as used herein, the phrase "chirally uniform" is used to describe an oligonucleotide molecule or type in which all nucleotide units have the same stereochemistry at the linkage phosphorus. For instance, an oligonucleotide whose nucleotide units all have Rp stereochemistry at the linkage phosphorus is chirally uniform. Likewise, an oligonucleotide whose nucleotide units all have Sp stereochemistry at the linkage phosphorus is chirally uniform.
• Predetermined By predetermined is meant deliberately selected, for example as opposed to randomly occurring or achieved. Those of ordinary skill in the art, reading the present specification, will appreciate that the present invention provides new and surprising technologies that permit selection of particular oligonucleotide types for preparation and/or inclusion in provided compositions, and further permits controlled preparation of precisely the selected particular types, optionally in selected particular relative amounts, so that provided compositions are prepared. Such provided compositions are "predetermined” as described herein. Compositions that may contain certain individual oligonucleotide types because they happen to have been generated through a process that cannot be controlled to intentionally generate the particular oligonucleotide types is not a "predetermined" composition. In some embodiments, a predetermined composition is one that can be intentionally reproduced (e.g., through repetition of a controlled process).
• Linkage phosphorus as defined herein, the phrase "linkage phosphorus" is used to indicate that the particular phosphorus atom being referred to is the phosphorus atom present in the internucleotidic linkage, which phosphorus atom corresponds to the phosphorus atom of a phosphodiester of an internucleotidic linkage as occurs in naturally occurring DNA and R A.
• a linkage phosphorus atom is in a modified internucleotidic linkage, wherein each oxygen atom of a phosphodiester linkage is optionally and independently replaced by an organic or inorganic moiety.
• a linkage phosphorus atom is P* of formula I.
• a linkage phosphorus atom is chiral.
• a chiral linkage phosphorus atom is P* of formula I.
• P-modification refers to any modification at the linkage phosphorus other than a stereochemical modification.
• a P-modification comprises addition, substitution, or removal of a pendant moiety covalently attached to a linkage phosphorus.
• the "P-modification” is -X- L-R 1 wherein each of X, L and R 1 is independently as defined and described herein and below.
• Blockmer refers to an oligonucleotide strand whose pattern of structural features characterizing each individual nucleotide unit is characterized by the presence of at least two consecutive nucleotide units sharing a common structural feature at the internucleotidic phosphorus linkage.
• common structural feature is meant common stereochemistry at the linkage phosphorus or a common modification at the linkage phosphorus.
• the at least two consecutive nucleotide units sharing a common structure feature at the internucleotidic phosphours linkage are referred to as a "block”.
• a blockmer is a "stereoblockmer,” e.g., at least two consecutive nucleotide units have the same stereochemistry at the linkage phosphorus. Such at lest two consecutive nucleotide units form a "stereoblock.”
• (Sp, Sp)-ATsCslGA is a stereoblockmer because at least two consecutive nucleotide units, the Ts and the Csl, have the same stereochemistry at the linkage phosphorus (both Sp).
• TsCsl forms a block, and it is a stereoblock.
• a blockmer is a "P-modification blockmer," e.g., at least two consecutive nucleotide units have the same modification at the linkage phosphorus. Such at lest two consecutive nucleotide units form a "P-modification block".
• (Rp, Sp)- ATsCsGA is a P-modification blockmer because at least two consecutive nucleotide units, the Ts and the Cs, have the same P-modification (i.e., both are a phosphorothioate diester).
• TsCs forms a block, and it is a P-modification block.
• a blockmer is a "linkage blockmer,” e.g., at least two consecutive nucleotide units have identical stereochemistry and identical modifications at the linkage phosphorus. At least two consecutive nucleotide units form a "linkage block".
• (Rp, Rp)-ATsCsGA is a linkage blockmer because at least two consecutive nucleotide units, the Ts and the Cs, have the same stereochemistry (both Rp) and P-modification (both phosphorothioate).
• TsCs forms a block, and it is a linkage block.
• a blockmer comprises one or more blocks independently selected from a stereoblock, a P-modification block and a linkage block.
• a blockmer is a stereoblockmer with respect to one block, and/or a P-modification blockmer with respect to another block, and/or a linkage blockmer with respect to yet another block.
• (Rp, Rp, Rp, Rp, Rp, Rp, Rp, Sp, Sp, Sp)-AAsTsCsGsAslTslCslGslATCG is a stereoblockmer with respect to the stereoblock AsTsCsGsAsl (all Rp at linkage phosphorus) or TslCslGsl (all Sp at linkage phosphorus), a P-modification blockmer with respect to the P- modification block AsTsCsGs (all s linkage) or AslTslCslGsl (all si linkage), or a linkage blockmer with respect to the linkage block AsTsCsGs (all Rp at linkage phosphorus and all s linkage) or TslCslGsl (all Sp at linkage phosphorus and all si linkage).
• Altmer refers to an oligonucleotide strand whose pattern of structural features characterizing each individual nucleotide unit is characterized in that no two consecutive nucleotide units of the oligonucleotide strand share a particular structural feature at the internucleotidic phosphorus linkage.
• an altmer is designed such that it comprises a repeating pattern. In some embodiments, an altmer is designed such that it does not comprise a repeating pattern.
• an altmer is a "stereoaltmer," e.g., no two consecutive nucleotide units have the same stereochemistry at the linkage phosphorus. For instance, (Rp, Sp, Rp, Sp, Rp, Sp, Rp, Sp, Rp, Sp, Rp, Sp, Rp, Sp, Rp, Sp, Rp, Sp, Rp, Sp, Rp, Sp, Rp, Sp, Rp, Sp, Rp, Rp)- GsCsCsTsCsAsGsTsCsTsGsCsTsTsGsCsTsTsCsGsCsAsCsC.
• an altmer is a "P-modification altmer” e.g., no two consecutive nucleotide units have the same modification at the linkage phosphorus. For instance, All-(Sp)-CAslGsT, in which each linkage phosphorus has a different P-modification than the others.
• an altmer is a "linkage altmer,” e.g., no two consecutive nucleotide units have identical stereochemistry or identical modifications at the linkage phosphorus.
• Unimer refers to an oligonucleotide strand whose pattern of structural features characterizing each individual nucleotide unit is such that all nucleotide units within the strand share at least one common structural feature at the internucleotidic phosphorus linkage.
• common structural feature is meant common stereochemistry at the linkage phosphorus or a common modification at the linkage phosphorus.
• a unimer is a "stereounimer," e.g., all nucleotide units have the same stereochemistry at the linkage phosphorus. For instance, All-(Sp)-CsAslGsT, in which all the linkages have Sp phosphorus.
• a unimer is a "P -modification unimer", e.g., all nucleotide units have the same modification at the linkage phosphorus. For instance, (Rp, Sp, i?p, Sp, Rp, Sp, Rp, Sp, Rp, Sp i?p, Sp, R V , Sp, Rp, Sp, R V , Sp, Rp, Rp)- GsCsCsTsCsAsGsTsCsTsGsCsTsTsCsGsCsAsCsC, in which all the internucleotidic linkages are phosphorothioate diester.
• a unimer is a "linkage unimer," e.g., all nucleotide units have the same stereochemistry and the same modifications at the linkage phosphorus. For instance, All-(Sp)-GsCsCsTsCsAsGsTsCsTsGsCsTsTsCsGsCsAsCsC, in which all the internucleotidic linkages are phosphorothioate diester having Sp linkage phosphorus.
• Gapmer refers to an oligonucleotide strand characterized in that at least one internucleotidic phosphorus linkage of the oligonucleotide strand is a phosphate diester linkage, for example such as those found in naturally occurring DNA or RNA. In some embodiments, more than one internucleotidic phosphorus linkage of the oligonucleotide strand is a phosphate diester linkage such as those found in naturally occurring DNA or RNA. For instance, All-(Sp)-CAslGsT, in which the internucleotidic linkage between C and A is a phosphate diester linkage.
• skipmer refers to a type of gapmer in which every other internucleotidic phosphorus linkage of the oligonucleotide strand is a phosphate diester linkage, for example such as those found in naturally occurring DNA or RNA, and every other internucleotidic phosphorus linkage of the oligonucleotide strand is a modified internucleotidic linkage. For instance, All-(Sp)-AsTCslGAs2TCs3G.
• FIG. 1 HPLC of chirally controlled oligonucleotides and stereorandom oligonucleotide.
• FIG. 10 HPLC of purified (Sp, Rp, Rp, Sp, Rp, Rp, Sp, Rp, Rp, Sp, Rp, Rp, Sp, Rp, Rp, Sp, Rp, Rp, Sp, Rp, Rp, Rp, Sp, Rp, Rp, Rp, Sp)-d[GsCsCsTsCsAsGsTsCsTsGsCsTsTsCsGsCsAsCsC] (S-(RRS) 6 , stereoblockmer and P-modification unimer (s-unimer)).
• Figure 18 HPLC of crude All-(Rp)-d[Cs3As3Gs3T] (P-modification unimer (s3- unimer), stereounimer and linkage unimer).
• Figure 19 LCMS of All-(Rp)-d[Cs3As3Gs3T] (P-modification unimer (s3- unimer), stereounimer and linkage unimer).
• Figure 20 HPLC of crude All-(i?p)-d[Cs2As2Gs2T] (P-modification unimer (s2- unimer), stereounimer and linkage unimer).
• Figure 21 LCMS of All-(7?p)-d[Cs2As2Gs2T] (P-modification unimer (s2- unimer), stereounimer and linkage unimer).
• Figure 25 LCMS of All-(Rp)-d[TsCslAsT] (stereounimer, P-modification altmer and linkage altmer).
• Figure 26 Exemplary oligonucleotides described in WO2012/030683 and contemplated for synthesis using methods of the present invention.
• Figure 27 Exemplary oligonucleotides described in WO2012/030683 and contemplated for synthesis using methods of the present invention.
• Figure 28 Exemplary oligonucleotides described in WO2012/030683 and contemplated for synthesis using methods of the present invention.
• Figure 29 Exemplary oligonucleotides described in WO2012/030683 and contemplated for synthesis using methods of the present invention.
• Figure 30 Exemplary oligonucleotides described in WO2012/030683 and contemplated for synthesis using methods of the present invention.
• Figure 31 Exemplary linkers described in WO2012/030683 for use in methods of the present invention.
• Figure 32 Exemplary linkers described in WO2012/030683 for use in methods of the present invention.
• Figure 33 Exemplary linkers described in WO2012/030683 for use in methods of the present invention.
• Figure 34 Exemplary linkers described in WO2012/030683 for use in methods of the present invention.
• Figure 35 RP-HPLC of crude DMT on oligonucleotide: ONT-75 (Panel A); ONT-80 (Panel B); ONT-77 (Panel C); ONT-81 (Panel D); ONT-87 (Panel E); ONT-88 (Panel F); ONT-89 (Panel G); ONT-82 (Panel H); ONT-84 (Panel I); ONT-85 (Panel J); ONT-86 (Panel K).
• FIG. 36 RP-HPLC of purified DMT off oligonucleotide: ONT-75 (Panel A); ONT-80 (Panel B); ONT-77 (Panel C); ONT-81 (Panel D); ONT-87 (Panel E); ONT-88 (Panel F); ONT-89 (Panel G); ONT-82 (Panel H); ONT-84 (Panel I); ONT-85 (Panel J); ONT-86 (Panel K).
• FIG. 37 Overlay of RP-HPLC traces of purified DMT off oligonucleotide: ONT-75, ONT-77, ONT-80, ONT-81, ONT-87, ONT-88, ONT-89, and ONT-41 (Panel A); expanded view of overlay of ONT-75, ONT-77, ONT-80, ONT-81, ONT-87, ONT-88, ONT-89, and ONT-41 (Panel B).
• Figure 38 Overlay of RP-HPLC traces of purified DMT off oligonucleotide: ONT-82, ONT-84, ONT-85, ONT-86, and ONT-83 (Panel A); expanded view of overlay of ONT-82, ONT-84, ONT-85, ONT-86, and ONT-83 (Panel B).
• FIG. 39 Tm overlay of chirally controlled oligonucleotides ONT-81, ONT-41, ONT-75, ONT-77, and ONT-80.
• Figure 40 Graphical representation of timecourse of serum human apolipoprotein B protein levels relative to PBS after 5 mg/kg stereoisomer or mipomersen IP dosing in huApoB mice for ONT-41, ONT-75, ONT-80, ONT-77, and ONT-81. A downward arrow indicates dosing days.
• Figure 41 Graphical representation of timecourse of serum human apolipoprotein B protein levels relative to PBS after 5 mg/kg stereoisomer or mipomersen IP dosing in huApoB mice for mipomersen, "full R” mipomersen, “full S” mipomersen, “RSR” mipomersen, and “SRS” mipomersen.
• a downward arrow indicates dosing days.
• FIG. 42 Graphical representation of timecourse of serum human apolipoprotein B protein levels relative to PBS after 10 mg/kg stereoisomer or mipomersen IP dosing in huApoB mice for mipomersen, "full R” mipomersen, “full S” mipomersen, “RSR” mipomersen, and “SRS” mipomersen.
• a downward arrow indicates dosing days.
• Figure 43 Graphical representation of timecourse of serum human apolipoprotein B protein levels relative to PBS after 5 mg/kg stereoisomer or mipomersen IP dosing in huApoB mice for mipomersen, ONT-87, ONT-88, and ONT-89. A downward arrow indicates dosing days.
• FIG. 44 Graphical representation of timecourse of serum human apolipoprotem B protein levels relative to PBS after 10 mg/kg stereoisomer or mipomersen IP dosing in huApoB mice for ONT-87, ONT-88, and ONT-89. A downward arrow indicates dosing days.
• Figure 45 Graphical representation of % PCSK-9 mRNA remaining after Hep3B treatment with siRNA duplex.
• Figure 46 Graphical representation of % PCSK-9 mRNA remaining after Hep3B treatment with siRNA duplex curve fit.
• Figure 47 Graphical representation of % PCSK-9 mRNA remaining after HeLa treatment with siRNA duplex.
• Figure 48 Graphical representation of % PCSK-9 mRNA remaining after HeLa treatment with siRN A duplex curve fit.
• Figure 49 Graphical representation of % PCSK-9 mRN A remaining after HeLa treatment with siRNA duplex containing 3 Phophorothiate stereo-centers.
• Figure 50 Graphical representation of % PCSK-9 mRNA remaining after HeLa treatment with siRN A duplex containing 3 Phophorothiate stereo-centers curve fit.
• ONT-108 ONT-108, ONT-109, and ONT-114.
• Figure 52 Overlay of RP-HPLC traces of purified DMT off oligonucleotide: ONT-106, ONT-107, and ONT-114.
• Figure 53 Graphical representation of timecourse of serum human apolipoprotem B protein levels relative to PBS after 10 mg/kg stereoisomer or mipomersen IP dosing in huApoB mice. A downward arrow indicates dosing days.
• Figure 55 Day 17 serum human apo lipoprotein B protein levels relative to PBS after 10 mg/kg stereoisomer (ONT-87, ONT-88 or ONT-89) or mipomersen IP dosing in huApoB mice.
• Figure 56 Day 24 Serum Human Apolipoprotein B Protein Levels Relative to PBS After 10 mg/kg Stereoisomer (ONT-87, ONT-88 or ONT-89) or Mipomersen IP Dosing in huApoB Mice.
• Figure 59 Plot of IEX-HPLC quantification analysis of svPDE digestion study for oligonucleotides ONT-75, ONT-77, ONT-80, ONT-81, ONT-87, ONT-88, ONT-89 and
• Figure 60 IEX-HPLC of enzymatic digestion study using nPl for oligonucleotide ONT-75 (All (Rp VGs5mCs5mCsTs5mCsAsGsTs5mCsTsGs5mCsTsTs5mCsGs 5mCsAs5mCs5mC.
• Figure 62 IEX-HPLC of enzymatic digestion study using nPl for oligonucleotide ONT-80 (All (Sp) -Gs5mCs5mCsTs5mCsAsGsTs5mCsTsGs5mCsTsTs5mCs Gs5mCsAs 5mCs5mC.
• Figure 63 IEX-HPLC of enzymatic digestion study using nPl for oligonucleotide ONT-81 (Sp, Sp, Sp, Sp, Sp, Rp, Rp, Rp, Rp, Rp, Rp, Rp, Rp, Rp, Rp, Rp, Sp, Sp, Sp -Gs5mCs5mCsTs5mCsAsGsTs5mCsTsGs5mCsTsTs5mCsGs5mCsAs5mCs5mCs5mC (5S-10R- 4S).
• Figure 64 IEX-HPLC of enzymatic digestion study using nPl for oligonucleotide ONT-87 (Rp, Rp, Rp, Rp, Rp, Sp, Sp, Rp, Sp, Sp, Rp, Sp, Sp, Rp, Rp, Rp, Rp, Rp, Rp, Rp, Rp, Rp, Rp, Rp, Rp, Rp, Rp, Rp, Rp -Gs5mCs5mCsTs5mCsAsGsTs5mCsTsGs5mCsTsTs5mCsGs5mCsAs5mCs5mCs5mC (5R-(SSR) 3 -5R).
• Figure 65 IEX-HPLC of enzymatic digestion study using nPl for oligonucleotide ONT-87 (Rp, Rp, Rp, Rp, Rp, Sp, Sp, Rp, Sp, Sp, Rp,
• Figure 68 Comparison of stability of chirally pure oligonucleotides ONT-75 and ONT-77 with the stereorandom "parental" oligonucleotide ONT-41 (Mipomersen) in preincubated rat whole liver homogenate.
• Figure 69 UPLC profile in producing oligonucleotide derivative using the monomer of 13b.
• Figure 70 UPLC profile in producing oligonucleotide derivative using the monomer of 27.
• Figure 71 Mouse Apolipoprotem B/GAPDH mR A. Levels Relative to Mock and Untreated Controls after Transfection of Primary Mouse Hepatocytes with Stereoisomer (ONT-82, ONT-83, ONT-84, QNT-85 or ONT-86).
• Figure 72 Mouse Apolipoprotem B/GAPDH mRNA Levels Relative to Mock and Untreated Controls after Transfection of Primary Mouse Hepatocytes with Stereoisomer (ONT-83, ONT-84, ONT-85 or ONT-86).
• Synthetic oligonucleotides provide useful molecular tools in a wide variety of applications. For example, oligonucleotides are useful in therapeutic, diagnostic, research, and new nanomaterials applications.
• the use of naturally occurring nucleic acids e.g., unmodified DNA or RNA
• various synthetic counterparts have been developed to circumvent these shortcomings. These include synthetic oligonucleotides that contain backbone modifications, which render these molecules less susceptible to degradation. From a structural point of view, such modifications to internucleotide phosphate linkages introduce chirality.
• oligonucleotides may be affected by the configurations of the phosphorus atoms that form the backbone of the oligonucleotides.
• antisense nucleotides such as binding affinity, sequence specific binding to the complementary R A, stability to nucleases are affected by, inter alia, chirality of the backbone (e.g., the configurations of the phosphorus atoms).
• the present invention encompasses the recognition that there is a need for chirally controlled oligonucleotides which comprise phosphorus atom-modified nucleic acids, as well as related compositions and methods.
• the present invention provides chirally controlled oligonucleotides that are structurally optimized to exhibit certain desirable characteristics, such as, e.g., increased stability and improved efficacy for in vitro and/or in vivo applications.
• Oligonucleotides in which one or two of the two nonbridging oxygen atoms of the internucleotidic phosphates is replaced by a different type of atom or substituent are known to be useful as therapeutic agents and probes to elucidate enzymatic reaction mechanisms.
• Such oligonucleotides often exhibit undesirable properties (e.g., susceptibility to degradation by nucleases, poor cell membrane permeability) that prohibit their use in numerous applications.
• undesirable properties e.g., susceptibility to degradation by nucleases, poor cell membrane permeability
• WO2010/141471 (herein “Traversa I”) teaches the modification of different types of nucleic acid constructs modified to have a reduced net polyanionic charge.
• WO2010/039543 (herein “Travera ⁇ ”) teaches compositions and methods for making neutral polynucleotides (N s) with reduced polyanionic charge.
• WO2008/008476 (herein, “Traversa III”) describes the synthesis of SATE (Imbach-type) phosphate prodrugs. Traversa I, II, and III do not teach chirally controlled oligonucleotides, compositions thereof, and methods of making and using the same, as described by the present invention.
• WO2010/072831 also teaches the modification of oligonucleotides.
• Girindus et al. teaches the use of sulfurization reagents to generate phosphorothioate triesters as prodrugs.
• Girindus et al. does not teach chirally controlled oligonucleotides, compositions thereof, and methods of making and using the same, as described by the present invention.
• WO2004/085454 (herein “Avecia I”) teaches the preparation of phosphorothioate oligonucleotides through, e.g., transient silylation of poly-H-phosphonate diesters.
• WO2001/027126 (herein “Avecia ⁇ ”) teaches processes for the solid phase synthesis of phosphotriester oligonucleotides by coupling H-phosphonate monomers to a solid supported 5'- hydroxyl oligonucleotide and further sulfurization of the resulting H-phosphonte diester into a phosphorothioate triester.
• Avecia II The disclosure of WO2001/064702 (herein “Avecia III”) is similar to Avecia II and further describes solid-phase synthesis on different solid supports. Avecia I, II, and III do not teach chirally controlled oligonucleotides, compositions thereof, and methods of making and using the same, as described by the present invention.
• Chiron teaches oligonucleotides with cationic internucleotide linkages comprising asymmetric phosphorus, such as stereopure amidates. Chiron teaches stereopure oligonucleotides obtained via crystallization of a mixture of diastereomers or via resolution using, e.g., column chromatography. Chiron does not teach chirally controlled oligonucleotides, compositions thereof, and methods of making and using the same, as described by the present invention.
• WO2009/146123 (herein “Spring Bank I”) teaches compositions and methods for treating viral infections using substituted phosphate oligonucleotides and phosphorothioate triesters.
• WO2007/070598 (herein “Spring Bank II”) teaches phosphotriester prodrugs as antiviral nucleic acids and teaches the synthesis of phosphorothioate prodrugs.
• Spring Bank I and II do not teach chirally controlled oligonucleotides, compositions thereof, and methods of making and using the same, as described by the present invention.
• Hybridon teaches lipophilic prodrugs for the increased cellular uptake of antisense oligonucleotides and observes that Rp and Sp phosphorothioates and phosphorothioate triester dimers can have different enzymatic stability properties.
• Hybridon does not teach chirally controlled oligonucleotides, compositions thereof, and methods of making and using the same, as described by the present invention.
• Imbach I WO 1997/047637
• SATE S- acyl thioethyl prodrug oligonucleotide compositions and methods.
• Imbach I describes, for example, bioreversible phosphotriester prodrugs and the preparation of certain prodrug oligonucleotides using post-synthestic alkylation or prodrug-group-containing phosphoramidites.
• US 6,124,445 herein “Imbach II” teaches modified antisense and chimeric prodrug oligonucleotides. Imbach I and II do not teach chirally controlled oligonucleotides, compositions thereof, and methods of making and using the same, as described by the present invention.
• WO2006/065751 (herein “Beaucage”) teaches CpG oligonucleotide phosphorothioate prodrugs that comprise thermolabile substituents (which substituents are introduced via a phosphoramidite monomer), and applications thereof. Beaucage does not teach chirally controlled oligonucleotides, compositions thereof, and methods of making and using the same, as described by the present invention.
• Wada et al. developed novel methods for the stereo-controlled synthesis of P-chiral nucleic acids using amidite chiral auxiliaries (JP4348077, WO2005/014609, WO2005/092909, and WO2010/064146, cumulatively referred to herein as "Wada I").
• WO2010/064146 (referred to herein as "Wada ⁇ ") discloses methods for synthesizing phosphorus atom-modified nucleic acids wherein the stereochemical configuration at phosphorus is controlled.
• Wada II are limited in that they do not provide for individual P-modification of each chiral linkage phosphorus in a controlled and designed manner.
• the methods for P-modified linkages of Wada II provide for the generation of a condensed intermediate poly H-phosphonate oligonucleotide strand that, once built to a desired length, is mass modified at the linkage phosphorus to provide, e.g., a desired phosphorothioate diester, phosphoramidate or boranophosphate or other such phosphorus atom-modified nucleic acids (referred to as Route B in the document - Scheme 6, page 36).
• Route B phosphorothioate diester
• Wada II route contains limitations in regards of the synthesis of longer oligonucleotides. While Wada II contemplates generally that a particular oligonucleotide could be envisaged to contain different modifications at each linkage phosphorus, Wada II does not describe or suggest methods for controlled iterative installation of such modifications, as are described herein.
• Wada II depicts a synthetic cycle that does not require an H-phosphonate intermediate oligonucleotide to be completely assembled prior to modification at the linkage phosphorus (therein referred to as Route A, page 35, Scheme 5, "Synthesis of a nucleic acid comprising a chiral X-phosphonate moiety of Formula 1 via Route A")
• this general disclosure does not teach certain key steps that are required to install certain P-modifications, as provided by the present invention, and especially not with any degree of efficiency and versatility such that this cycle would be useful in the synthesis of chirally controlled P-modified oligonucleotides, and especially oligonucleotides of longer lengths.
• Wada III teaches novel chiral auxiliaries for use in Wada II methods to produce H-phosphonate oligonucleotides that, once built, can be subsequently modified to provide, inter alia, phosphorothioates and the like.
• Wada et al. observe in Wada III that the four types of chiral auxiliaries disclosed in Wada II formed strong bonds with phosphorus at the linkage phosphorus and thus did not allow for efficient removal.
• Wada III notes that removal of the Wada II chiral auxiliaries required harsh conditions, which conditions were prone to compromising the integrity of the product oligonucleotide. Wada III observes that this is especially problematic when synthesizing long chain oligonucleotides for at least the reason that as the degradation reaction(s) proceed, additional byproducts are generated that can further react with and degrade the product oligonucleotide.
• Wada III therefore provides chiral auxiliaries that can be more efficiently cleaved from the oligonucleotide under mild acidic conditions by way of an S I mechanism releasing the H-phosphonate internucleotide linkage (route B), or under relatively mild basic conditions, by a ⁇ -elimation pathway.
• Oligonucleotide phosphorothioates have shown therapeutic potential (Stein et al, Science (1993), 261 : 1004-12; Agrawal et al, Antisence Res. and Dev. (1992), 2:261-66; Bayever et al, Antisense Res. and Dev. (1993), 3:383-390). Oligonucleotide phosphorothioates prepared without regard to the stereochemistry of the phosphorothioate exist as a mixture of 2 n diastereomers, where n is the number of internucleotide phosphorothioates linkages. The chemical and biological properties of these diastereomeric phosphorothioates can be distinct.
• the present invention provides chirally controlled oligonucleotides, and chirally controlled oligonucleotide compositions which are of high crude purity and of high diastereomeric purity. In some embodiments, the present invention provides chirally controlled oligonucleotides, and chirally controlled oligonucleotide compositions which are of high crude purity. In some embodiments, the present invention provides chirally controlled oligonucleotides, and chirally controlled oligonucleotide compositions which are of high diastereomeric purity.
• the present invention provides chirally controlled compositions comprising a plurality of oligonucleotides of at least one type, wherein each type is defined by: 1) base sequence; 2) pattern of backbone linkages; 3) pattern of backbone chiral centers; and 4) pattern of backbone P-modifications.
• the present invention provides chirally controlled compositions comprising a plurality of oligonucleotides of the same type, wherein each type is defined by: 1) base sequence; 2) pattern of backbone linkages; 3) pattern of backbone chiral centers; and 4) pattern of backbone P-modifications.
• the present invention provides chirally controlled compositions comprising a plurality of oligonucleotides of two or more types, wherein each type is defined by: 1) base sequence; 2) pattern of backbone linkages; 3) pattern of backbone chiral centers; and 4) pattern of backbone P-modifications.
• the present invention provides oligonucleotides comprising one or more diastereomerically pure internucleotidic linkages with respect to the chiral linkage phosphorus. In some embodiments, the present invention provides oligonucleotides comprising one or more diastereomerically pure internucleotidic linkages having the structure of formula I. In some embodiments, the present invention provides oligonucleotides comprising one or more diastereomerically pure internucleotidic linkages with respect to the chiral linkage phosphorus, and one or more phosphate diester linkages.
• the present invention provides oligonucleotides comprising one or more diastereomerically pure internucleotidic linkages having the structure of formula I, and one or more phosphate diester linkages. In some embodiments, the present invention provides oligonucleotides comprising one or more diastereomerically pure internucleotidic linkages having the structure of formula I-c, and one or more phosphate diester linkages. In some embodiments, such oligonucleotides are prepared by using stereoselective oligonucleotide synthesis, as described in this application, to form pre-designed diastereomerically pure internucleotidic linkages with respect to the chiral linkage phosphorus.
• oligonucleotides comprise a sequence further described in the application, including but not limited to those described in Tables 2 and 4, and Appendices A, B and C.
• a provided oligonucleotide comprises a combination of stereopure and stereorandom internucleotidic linkages with respect to chirality at the linkage phosphorus. For instance, in some embodiments it is desirable to have a block of one or more stereodefmed internucleotidic linkages within an oligonucleotide that is otherwise stereorandom with respect to chirality at the linkage phosphorus. In some embodiments, it is desirable to have a block of one or more internucleotidic linkages that are stereorandom within an oligonucleotide that is otherwise stereodefined with respect to chirality at the linkage phosphorus.
• At least one nucleotide unit of a provided oligonucleotide is installed using stereoselective oligonucleotide synthesis, as described in this application, to form a pre-designed diastereomerically pure internucleotidic linkage with respect to the chiral linkage phosphorus.
• at least two nucleotide units of a provided oligonucleotide are installed using stereoselective oligonucleotide synthesis, as described in this application, to form at least two pre-designed diastereomerically pure internucleotidic linkages with respect to the chiral linkage phosphorus.
• At least three nucleotide units of a provided oligonucleotide are installed using stereoselective oligonucleotide synthesis, as described in this application, to form at least three pre-designed diastereomerically pure internucleotidic linkages with respect to the chiral linkage phosphorus.
• the at least one, two, or three pre-designed diastereomerically pure internucleotidic linkages are adjacent to one another.
• the at least one, two, or three pre-designed diastereomerically pure internucleotidic linkages are not adjacent to one another.
• nucleotide units of a provided oligonucleotide are installed using stereoselective oligonucleotide synthesis, as described in this application, to form a pre-designed diastereomerically pure internucleotidic linkage with respect to the chiral linkage phosphorus.
• the at least about 5%, 10%, 15%, 20%, 25%, 30%, 35%), 40%, 45%), or 50% of nucleotide units occur in one or more blocks to provide a blockmer.
• the at least about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50%) of nucleotide units occur in a an alternating pattern to provide an altmer.
• any desirable pattern can be achieved using methods of the present invention and are contemplated herein.
• the present invention provides a chirally controlled oligonucleotide, wherein at least two of the individual internucleotidic linkages within the oligonucleotide have different stereochemistry and/or different P-modifications relative to one another. In certain embodiments, the present invention provides a chirally controlled oligonucleotide, wherein at least two individual internucleotidic linkages within the oligonucleotide have different P-modifications relative to one another.
• the present invention provides a chirally controlled oligonucleotide, wherein at least two of the individual mtemucleotidic linkages within the oligonucleotide have different P-modifications relative to one another, and wherein the chirally controlled oligonucleotide comprises at least one phosphate diester mtemucleotidic linkage.
• the present invention provides a chirally controlled oligonucleotide, wherein at least two of the individual mtemucleotidic linkages within the oligonucleotide have different P-modifications relative to one another, and wherein the chirally controlled oligonucleotide comprises at least one phosphate diester mtemucleotidic linkage and at least one phosphorothioate diester mtemucleotidic linkage.
• the present invention provides a chirally controlled oligonucleotide, wherein at least two of the individual mtemucleotidic linkages within the oligonucleotide have different P-modifications relative to one another, and wherein the chirally controlled oligonucleotide comprises at least one phosphorothioate triester mtemucleotidic linkage.
• the present invention provides a chirally controlled oligonucleotide, wherein at least two of the individual mtemucleotidic linkages within the oligonucleotide have different P-modifications relative to one another, and wherein the chirally controlled oligonucleotide comprises at least one phosphate diester mtemucleotidic linkage and at least one phosphorothioate triester mtemucleotidic linkage.
• the present invention provides a chirally controlled oligonucleotide comprising one or more modified mtemucleotidic linkages independently having the structure of formula I:
• the present invention provides a chirally controlled oligonucleotide comprising one or more modified mtemucleotidic linkages of formula I, and wherein individual mtemucleotidic linkages of formula I within the oligonucleotide have different P-modifications relative to one another. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising one or more modified mtemucleotidic linkages of formula I, and wherein individual mtemucleotidic linkages of formula I within the oligonucleotide have different -X-L-R 1 relative to one another.
• the present invention provides a chirally controlled oligonucleotide comprising one or more modified mtemucleotidic linkages of formula I, and wherein individual mtemucleotidic linkages of formula I within the oligonucleotide have different X relative to one another. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising one or more modified internucleotidic linkages of formula I, and wherein individual internucleotidic linkages of formula I within the oligonucleotide have different -L-R 1 relative to one another.
• the present invention provides a chirally controlled oligonucleotide, wherein at least two of the individual internucleotidic linkages within the oligonucleotide have different stereochemistry and/or different P-modifications relative to one another.
• the present invention provides a chirally controlled oligonucleotide, wherein at least two of the individual internucleotidic linkages within the oligonucleotide have different stereochemistry relative to one another, and wherein at least a portion of the structure of the chirally controlled oligonucleotide is characterized by a repeating pattern of alternating stereochemisty.
• the present invention provides a chirally controlled oligonucleotide, wherein at least two of the individual internucleotidic linkages within the oligonucleotide have different P-modifications relative to one another, in that they have different X atoms in their -XLR 1 moieties, and/or in that they have different L groups in their -XLR 1 moieties, and/or that they have different R 1 atoms in their -XLR 1 moieties.
• the present invention provides a chirally controlled oligonucleotide, wherein at least two of the individual internucleotidic linkages within the oligonucleotide have different stereochemistry and/or different P-modifications relative to one another and the oligonucleotide has a structure represented by the following formula:
• each R B independently represents a block of nucleotide units having the R configuration at the linkage phosphorus
• each S B independently represents a block of nucleotide units having the S configuration at the linkage phosphorus; each of nl-ny is zero or an integer, with the requirement that at least one odd n and at least one even n must be non-zero so that the oligonucleotide includes at least two individual internucleotidic linkages with different stereochemistry relative to one another; and
• nl-ny is between 2 and 200, and in some embodiments is between a lower limit selected from the group consisting of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25 or more and an upper limit selected from the group consisting of 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, and 200, the upper limit being larger than the lower limit.
• each n has the same value; in some embodiments, each even n has the same value as each other even n; in some embodiments, each odd n has the same value each other odd n; in some embodiments, at least two even ns have different values from one another; in some embodiments, at least two odd ns have different values from one another.
• a provided oligonucleotide includes adjacent blocks of S stereochemistry linkages and R stereochemistry linkages of equal lengths.
• provided oligonucleotides include repeating blocks of S and R stereochemistry linkages of equal lengths.
• provided oligonucleotides include repeating blocks of S and R stereochemistry linkages, where at least two such blocks are of different lengths from one another; in some such embodiments each S stereochemistry block is of the same length, and is of a different length from each R stereochemistry length, which may optionally be of the same length as one another.
• At least two skip-adjacent ns are equal to one another, so that a provided oligonucleotide includes at least two blocks of linkages of a first steroechemistry that are equal in length to one another and are separated by a block of linkages of the other stereochemistry, which separating block may be of the same length or a different length from the blocks of first steroechemistry.
• ns associated with linkage blocks at the ends of a provided oligonucleotide are of the same length.
• provided oligonucleotides have terminal blocks of the same linkage stereochemistry. In some such embodiments, the terminal blocks are separated from one another by a middle block of the other linkage stereochemistry.
• a provided oligonucleotide of formula [S B nlR B n2S B n3R B n4...S B nxR B ny] is a stereoblockmer.
• a provided oligonucleotide of formula [S B nlR B n2S B n3R B n4...S B nxR B ny] is a stereoskipmer. In some embodiments, a provided oligonucleotide of formula [S B nlR B n2S B n3R B n4...S B nxR B ny] is a stereoaltmer. In some embodiments, a provided oligonucleotide of formula [S B nlR B n2S B n3R B n4...S B nxR B ny] is a gapmer.
• a provided oligonucleotide of formula [S B nlR B n2S B n3R B n4...S B nxR B ny] is of any of the above described patterns and further comprises patterns of P-modifications.
• a provided oligonucleotide of formula [S B nlR B n2S B n3R B n4...S B nxR B ny] is a stereoskipmer and P- modification skipmer.
• a provided oligonucleotide of formula [S B nlR B n2S B n3R B n4...S B nxR B ny] is a chirally controlled oligonucleotide comprising one or more modified internuceotidic linkages independently having the structure of formula I:
• P* is an asymmetric phosphorus atom and is either Rp or Sp;
• W is O, S or Se
• each of X, Y and Z is independently -0-, -S-, -N ⁇ L-R 1 )-, or L;
• L is a covalent bond or an optionally substituted, linear or branched Cr-C 10 alkylene, wherein one or more methylene units of L are optionally and independently replaced by an optionally substituted Ci-C 6 alkylene, Ci-C 6 alkenylene,— C ⁇ C— , -C(R') 2 -, -Cy-, -0-, -S-, -S-S-, -N(R')-, -C(O)-, -C(S)-, -C(NR')-, -C(0)N(R')-, -N(R')C(0)N(R')-, -N(R')C(0)- - N(R')C(0)0-, -OC(0)N(R')-, -S(O)- -S(0) 2 -, -S(0) 2 N(R')-, -N(R')S(0) 2 -, -SC(O)-, - C(0)S-
• -Cy- is an optionally substituted bivalent ring selected from phenylene, carbocyclylene, arylene, heteroarylene, or heterocyclylene;
• each R is independently hydrogen, or an optionally substituted group selected from Ci-C 6 aliphatic, phenyl, carbocyclyl, aryl, heteroaryl, or heterocyclyl; and each ⁇ independently represents a connection to a nucleoside.
• a chirally controlled oligonucleotide comprises one or more modified internucleotidic phosphorus linkages.
• a chirally controlled oligonucleotide comprises, e.g., a phosphorothioate or a phosphorothioate triester linkage.
• a chirally controlled oligonucleotide comprises a phosphorothioate triester linkage.
• a chirally controlled oligonucleotide comprises at least two phosphorothioate triester linkages.
• a chirally controlled oligonucleotide comprises at least three phosphorothioate triester linkages. In some embodiments, a chirally controlled oligonucleotide comprises at least four phosphorothioate triester linkages. In some embodiments, a chirally controlled oligonucleotide comprises at least five phosphorothioate triester linkages. Exemplary such modified internucleotidic phosphorus linkages are described further herein.
• a chirally controlled oligonucleotide comprises different internucleotidic phosphorus linkages. In some embodiments, a chirally controlled oligonucleotide comprises at least one phosphate diester mtemucleotidic linkage and at least one modified mtemucleotidic linkage. In some embodiments, a chirally controlled oligonucleotide comprises at least one phosphate diester mtemucleotidic linkage and at least one phosphorothioate triester linkage.
• a chirally controlled oligonucleotide comprises at least one phosphate diester mtemucleotidic linkage and at least two phosphorothioate triester linkages. In some embodiments, a chirally controlled oligonucleotide comprises at least one phosphate diester mtemucleotidic linkage and at least three phosphorothioate triester linkages. In some embodiments, a chirally controlled oligonucleotide comprises at least one phosphate diester mtemucleotidic linkage and at least four phosphorothioate triester linkages.
• a chirally controlled oligonucleotide comprises at least one phosphate diester mtemucleotidic linkage and at least five phosphorothioate triester linkages. Exemplary such modified mtemucleotidic phosphorus linkages are described further herein.
• a phosphorothioate triester linkage comprises a chiral auxiliary, which, for example, is used to control the stereoselectivity of a reaction.
• a phosphorothioate triester linkage does not comprise a chiral auxiliary.
• a phosphorothioate triester linkage is intentionally maintained until and/or during the administration to a subject.
• a chirally controlled oligonucleotide is linked to a solid support. In some embodiments, a chirally controlled oligonucleotide is cleaved from a solid support.
• a chirally controlled oligonucleotide comprises at least one phosphate diester mtemucleotidic linkage and at least two consecutive modified mtemucleotidic linkages. In some embodiments, a chirally controlled oligonucleotide comprises at least one phosphate diester mtemucleotidic linkage and at least two consecutive phosphorothioate triester mtemucleotidic linkages.
• a chirally controlled oligonucleotide is a blockmer. In some embodiments, a chirally controlled oligonucleotide is a stereoblockmer. In some embodiments, a chirally controlled oligonucleotide is a P-modification blockmer. In some embodiments, a chirally controlled oligonucleotide is a linkage blockmer. [00240] In some embodiments, a chirally controlled oligonucleotide is an altmer. In some embodiments, a chirally controlled oligonucleotide is a stereoaltmer. In some embodiments, a chirally controlled oligonucleotide is a P-modification altmer. In some embodiments, a chirally controlled oligonucleotide is a linkage altmer.
• a chirally controlled oligonucleotide is a unimer. In some embodiments, a chirally controlled oligonucleotide is a stereounimer. In some embodiments, a chirally controlled oligonucleotide is a P-modification unimer. In some embodiments, a chirally controlled oligonucleotide is a linkage unimer.
• a chirally controlled oligonucleotide is a gapmer.
• a chirally controlled oligonucleotide is a skipmer.
• the present invention provides a chirally controlled oligonucleotide comprising one or more modified internucleotidic linkages independently having the structure of formula I:
• P* is an asymmetric phosphorus atom and is either ?p or Sp;
• W is O, S or Se
• each of X, Y and Z is independently -0-, -S-, -N ⁇ L-R 1 )-, or L;
• L is a covalent bond or an optionally substituted, linear or branched Cr-C 10 alkylene, wherein one or more methylene units of L are optionally and independently replaced by an optionally substituted Ci-C 6 alkylene, Ci-C 6 alkenylene,— C ⁇ C— , -C(R') 2 - -Cy-, -0-, -S-, -S-S-, -N(Pv')-, -C(O)-, -C(S)-, -C(NR')-, -C(0)N(R')-, -N(R')C(0)N(R')-, -N(R')C(0)-, - N(R')C(0)0-, -OC(0)N(R')-, -S(O)- -S(0) 2 -, -S(0) 2 N(R')- -N(R')S(0) 2 -, -SC(O)-, - C(0)S-
• -Cy- is an optionally substituted bivalent ring selected from phenylene, carbocyclylene, arylene, heteroarylene, or heterocyclylene;
• each R is independently hydrogen, or an optionally substituted group selected from Ci-C 6 aliphatic, phenyl, carbocyclyl, aryl, heteroaryl, or heterocyclyl; and each ⁇ independently represents a connection to a nucleoside.
• P* is an asymmetric phosphorus atom and is either Rp or Sp. In some embodiments, P* is i?p. In other embodiments, P* is Sp. In some embodiments, an oligonucleotide comprises one or more internucleotidic linkages of formula I wherein each P* is independently Rp or Sp. In some embodiments, an oligonucleotide comprises one or more internucleotidic linkages of formula I wherein each P* is i?p. In some embodiments, an oligonucleotide comprises one or more internucleotidic linkages of formula I wherein each P* is Sp.
• an oligonucleotide comprises at least one internucleotidic linkage of formula I wherein P* is Rp. In some embodiments, an oligonucleotide comprises at least one internucleotidic linkage of formula I wherein P* is Sp. In some embodiments, an oligonucleotide comprises at least one internucleotidic linkage of formula I wherein P* is Rp, and at least one internucleotidic linkage of formula I wherein P* is Sp.
• W is O, S, or Se. In some embodiments, W is O. In some embodiments, W is S. In some embodiments, W is Se. In some embodiments, an oligonucleotide comprises at least one internucleotidic linkage of formula I wherein W is O. In some embodiments, an oligonucleotide comprises at least one internucleotidic linkage of formula I wherein W is S. In some embodiments, an oligonucleotide comprises at least one internucleotidic linkage of formula I wherein W is Se. [00247] As defined generally above and herein, each R is independently hydrogen, or an optionally substituted group selected from Cr-C 6 aliphatic, phenyl, carbocyclyl, aryl, heteroaryl, or heterocyclyl.
• R is hydrogen. In some embodiments, R is an optionally substituted group selected from Ci-C 6 aliphatic, phenyl, carbocyclyl, aryl, heteroaryl, or heterocyclyl.
• R is an optionally substituted Cr-C 6 aliphatic. In some embodiments, R is an optionally substituted Ci-C 6 alkyl. In some embodiments, R is optionally substituted, linear or branched hexyl. In some embodiments, R is optionally substituted, linear or branched pentyl. In some embodiments, R is optionally substituted, linear or branched butyl. In some embodiments, R is optionally substituted, linear or branched propyl. In some embodiments, R is optionally substituted ethyl. In some embodiments, R is optionally substituted methyl.
• R is optionally substituted phenyl. In some embodiments, R is substituted phenyl. In some embodiments, R is phenyl.
• R is optionally substituted carbocyclyl. In some embodiments, R is optionally substituted C -C 10 carbocyclyl. In some embodiments, R is optionally substituted monocyclic carbocyclyl. In some embodiments, R is optionally substituted cycloheptyl. In some embodiments, R is optionally substituted cyclohexyl. In some embodiments, R is optionally substituted cyclopentyl. In some embodiments, R is optionally substituted cyclobutyl. In some embodiments, R is an optionally substituted cyclopropyl. In some embodiments, R is optionally substituted bicyclic carbocyclyl.
• R is an optionally substituted aryl. In some embodiments, R is an optionally substituted bicyclic aryl ring.
• R is an optionally substituted heteroaryl. In some embodiments, R is an optionally substituted 5-6 membered monocyclic heteroaryl ring having 1- 3 heteroatoms independently selected from nitrogen, sulfur, or oxygen. In some embodiments, R is a substituted 5-6 membered monocyclic heteroaryl ring having 1-3 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In some embodiments, R is an unsubstituted 5-6 membered monocyclic heteroaryl ring having 1-3 heteroatoms independently selected from nitrogen, sulfur, or oxygen. [00254] In some embodiments, R is an optionally substituted 5 membered monocyclic heteroaryl ring having 1-3 heteroatoms independently selected from nitrogen, oxygen or sulfur. In some embodiments, R is an optionally substituted 6 membered monocyclic heteroaryl ring having 1-3 heteroatoms independently selected from nitrogen, oxygen, or sulfiir.
• R is an optionally substituted 5-membered monocyclic heteroaryl ring having 1 heteroatom selected from nitrogen, oxygen, or sulfur.
• R is selected from pyrrolyl, furanyl, or thienyl.
• R is an optionally substituted 5-membered heteroaryl ring having 2 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In certain embodiments, R is an optionally substituted 5-membered heteroaryl ring having 1 nitrogen atom, and an additional heteroatom selected from sulfur or oxygen. Exemplary R groups include optionally substituted pyrazolyl, imidazolyl, thiazolyl, isothiazolyl, oxazolyl or isoxazolyl.
• R is a 6-membered heteroaryl ring having 1-3 nitrogen atoms. In other embodiments, R is an optionally substituted 6-membered heteroaryl ring having 1-2 nitrogen atoms. In some embodiments, R is an optionally substituted 6-membered heteroaryl ring having 2 nitrogen atoms. In certain embodiments, R is an optionally substituted 6-membered heteroaryl ring having 1 nitrogen. Exemplary R groups include optionally substituted pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, or tetrazinyl.
• R is an optionally substituted 8-10 membered bicyclic heteroaryl ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R is an optionally substituted 5,6-fused heteroaryl ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R is an optionally substituted 5,6-fused heteroaryl ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R is an optionally substituted 5,6-fused heteroaryl ring having 1 heteroatom independently selected from nitrogen, oxygen, or sulfur.
• R is an optionally substituted indolyl.
• R is an optionally substituted azabicyclo[3.2.1]octanyl.
• R is an optionally substituted 5,6-fused heteroaryl ring having 2 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R is an optionally substituted azaindolyl.
• R is an optionally substituted benzimidazolyl.
• R is an optionally substituted benzothiazolyl.
• R is an optionally substituted benzoxazolyl.
• R is an optionally substituted indazolyl.
• R is an optionally substituted 5,6-fused heteroaryl ring having 3 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R is an optionally substituted 6,6-fused heteroaryl ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In some embodiments, R is an optionally substituted 6,6-fused heteroaryl ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In other embodiments, R is an optionally substituted 6,6-fused heteroaryl ring having 1 heteroatom independently selected from nitrogen, oxygen, or sulfur. In some embodiments, R is an optionally substituted quinolinyl. In some embodiments, R is an optionally substituted isoquinolinyl. According to one aspect, R is an optionally substituted 6,6-fused heteroaryl ring having 2 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In some embodiments, R is a quinazoline or a quinoxaline.
• R is an optionally substituted heterocyclyl. In some embodiments, R is an optionally substituted 3-7 membered saturated or partially unsaturated heterocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In some embodiments, R is a substituted 3-7 membered saturated or partially unsaturated heterocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In some embodiments, R is an unsubstituted 3-7 membered saturated or partially unsaturated heterocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R is an optionally substituted heterocyclyl. In some embodiments, R is an optionally substituted 6 membered saturated or partially unsaturated heterocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In some embodiments, R is an optionally substituted 6 membered partially unsaturated heterocyclic ring having 2 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In some embodiments, R is an optionally substituted 6 membered partially unsaturated heterocyclic ring having 2 oxygen atom.
• R is a 3-7 membered saturated or partially unsaturated heterocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R is oxiranyl, oxetanyl, tetrahydrofuranyl, tetrahydropyranyl, oxepaneyl, aziridineyl, azetidineyl, pyrrolidinyl, piperidinyl, azepanyl, thiiranyl, thietanyl, tetrahydrothiophenyl, tetrahydrothiopyranyl, thiepanyl, dioxolanyl, oxathiolanyl, oxazolidinyl, imidazolidinyl, thiazolidinyl, dithiolanyl, dioxanyl, morpholinyl, oxathianyl, piperazinyl, thio
• R is an optionally substituted 5-6 membered partially unsaturated monocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R is an optionally substituted tetrahydropyridinyl, dihydrothiazolyl, dihydrooxazolyl, or oxazolinyl group.
• R is an optionally substituted 8-10 membered bicyclic saturated or partially unsaturated heterocyclic ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R is an optionally substituted indolinyl.
• R is an optionally substituted isoindolinyl.
• R is an optionally substituted 1, 2, 3, 4-tetrahydroquinoline.
• R is an optionally substituted 1, 2, 3, 4-tetrahydroisoquinoline.
• each R' is independently -R, -C(0)R, -C0 2 R, or -S0 2 R, or:
• R' is -R, -C(0)R, -CO 2 R, or -S0 2 R, wherein R is as defined above and described herein.
• R' is -R, wherein R is as defined and described above and herein. In some embodiments, R' is hydrogen.
• R' is -C(0)R, wherein R is as defined above and described herein. In some embodiments, R' is -CO 2 R, wherein R is as defined above and described herein. In some embodiments, R' is -SO 2 R, wherein R is as defined above and described herein.
• two R' on the same nitrogen are taken together with their intervening atoms to form an optionally substituted heterocyclic or heteroaryl ring.
• two R' on the same carbon are taken together with their intervening atoms to form an optionally substituted aryl, carbocyclic, heterocyclic, or heteroaryl ring.
• -Cy- is an optionally substituted bivalent ring selected from phenylene, carbocyclylene, arylene, heteroarylene, or heterocyclylene.
• -Cy- is optionally substituted phenylene. In some embodiments, -Cy- is optionally substituted carbocyclylene. In some embodiments, -Cy- is optionally substituted arylene. In some embodiments, -Cy- is optionally substituted heteroarylene. In some embodiments, -Cy- is optionally substituted heterocyclylene.
• each of X, Y and Z is independently -0-, -S-, -N ⁇ -L-R 1 )-, or L, wherein each of L and R 1 is independently as defined above and described below.
• X is -0-. In some embodiments, X is -S-. In some embodiments, X is -O- or -S-. In some embodiments, an oligonucleotide comprises at least one intemucleotidic linkage of formula I wherein X is -0-. In some embodiments, an oligonucleotide comprises at least one intemucleotidic linkage of formula I wherein X is -S-.
• an oligonucleotide comprises at least one intemucleotidic linkage of formula I wherein X is -0-, and at least one intemucleotidic linkage of formula I wherein X is -S-.
• an oligonucleotide comprises at least one intemucleotidic linkage of formula I wherein X is -0-, and at least one intemucleotidic linkage of formula I wherein X is -S-, and at least one intemucleotidic linkage of formula I wherein L is an optionally substituted, linear or branched Ci-Cio alkylene, wherein one or more methylene units of L are optionally and independently replaced by an optionally substituted C -C6 alkylene, Ci-C 6 alkenylene, -C ⁇ C- -C(R') 2 -, -Cy-, -0-, -S-, -S-S-, -N(R')-, -C(O)-, -C(S)-, -C( R')-, - C(0)N(R')-, -N(R')C(0)N(R')-, -N(R')C(0)N
• X is -N(-L-R L )-. In some embodiments, X is -N(R L )-. In some embodiments, X is -N(R')-. In some embodiments, X is -N(R)-. In some embodiments, X is -NH-.
• X is L. In some embodiments, X is a covalent bond. In some embodiments, X is or an optionally substituted, linear or branched Cr-C 10 alkylene, wherein one or more methylene units of L are optionally and independently replaced by an optionally substituted Ci-C 6 alkylene, Ci-C 6 alkenylene,— C ⁇ C— ?
• X is an optionally substituted Ci-C 10 alkylene or Ci-Cio alkenylene. In some embodiments, X is methylene.
• Y is -0-. In some embodiments, Y is -S-.
• Y is -N(-L-R L )-. In some embodiments, Y is -N(R L )-. In some embodiments, Y is -N(R')-. In some embodiments, Y is -N(R)-. In some embodiments, Y is -NH-.
• Y is L. In some embodiments, Y is a covalent bond. In some embodiments, Y is or an optionally substituted, linear or branched Cr-C 10 alkylene, wherein one or more methylene units of L are optionally and independently replaced by an optionally substituted Ci-C 6 alkylene, Ci-C 6 alkenylene,— C ⁇ C— ?
• Y is an optionally substituted Ci-C 10 alkylene or Ci-Cio alkenylene. In some embodiments, Y is methylene.
• Z is -0-. In some embodiments, Z is -S-.
• Z is -N ⁇ -L-R 1 )-. In some embodiments, Z is -N ⁇ R 1 )-. In some embodiments, Z is -N(R')-. In some embodiments, Z is -N(R)-. In some embodiments, Z is -NH-. [00281] In some embodiments, Z is L. In some embodiments, Z is a covalent bond. In some embodiments, Z is or an optionally substituted, linear or branched Cr-C 10 alkylene, wherein one or more methylene units of L are optionally and independently replaced by an optionally substituted Ci-C 6 alkylene, Ci-C 6 alkenylene,— C ⁇ C— ?
• Z is an optionally substituted Ci-C 10 alkylene or Ci-Cio alkenylene. In some embodiments, Z is methylene.
• L is a covalent bond or an optionally substituted, linear or branched Ci-Cio alkylene, wherein one or more methylene units of L are optionally and independently replaced by an optionally substituted Ci-C 6 alkylene, Ci-C 6 alkenylene, -C ⁇ C- , -C(R') 2 -, -Cy-, -0-, -S-, -S-S-, -N(R')-, -C(O)-, -C(S)-,
• L is a covalent bond.
• L is an optionally substituted, linear or branched Cr-Cio alkylene, wherein one or more methylene units of L are optionally and independently replaced by an optionally substituted Ci-C 6 alkylene, d-
• L has the structure of-L -V-, wherein:
• V is selected from -0-, -S- -NR'-, C(R') 2 , -S-S-, -B-S-S-C-, , or an optionally substituted group selected from C ⁇ -Ce alkylene, arylene, C ⁇ -Ce heteroalkylene, heterocyclylene, and heteroarylene;
• each of B and C is independently -0-, -S-, -NR'-, -C(R') 2 -, or an optionally substituted group selected from Ci-C 6 alkylene, carbocyclylene, arylene, heterocyclylene, or heteroarylene; and each R' is independently as defined above and described herein.
• L is , wherein Ring Cy' is an optionally substituted arylene, carb n some embodiments, L 1
• L 1 is
• L 1 is an optionally substituted group
• L has the structure of:
• E is -0-, -S-, -NR'- or -C(R') 2 -;
• — is a single or double bond
• the two R are taken together with the two carbon atoms to which they are bound to form optionally substituted aryl, carbocyclic, heteroaryl or heterocyclic ring; and each R' independently as defined above and described herein.
• L has the structure of:
• G is -0-, -S-, or -NR';
• — is a single or double bond
• the two R L1 are taken together with the two carbon atoms to which they are bound to form an optionally substituted aryl, C3-C 10 carbocyclic, heteroaryl or heterocyclic ring.
• L has the structure of:
• E is -0-, -S-, -NR'- or -C(R') 2 -;
• each R' is independently as defined above and described herein.
• L has the structure of:
• G is -0-, -S-, or -NR';
• L has the structure of:
• E is -0-, -S- -NR'- or -C(R') 2 -;
• each R' is independently as defined above and described herein.
• L has the structure of:
• G is -0-, -S-, or -NR';
• L has the structure of:
• E is -0-, -S-, -NR'- or -C(R') 2 -;
• — is a single or double bond
• the two R L1 are taken together with the two carbon atoms to which they are bound to form an optionally substituted aryl, C3-Q0 carbocyclic, heteroaryl or heterocyclic ring;
• each R' is independently as defined above and described herein.
• L has the structure of:
• G is -0-, -S-, or -NR';
• — is a single or double bond
• the two R L1 are taken together with the two carbon atoms to which they are bound to form an optionally substituted aryl, C 3 - 0 carbocyclic, heteroaryl or heterocyclic ring;
• each R' is independently as defined above and described herein.
• L has the structure of:
• E is -0-, -S-, -NR'- or -C(R') 2 -;
• each R' is independently as defined above and described herein.
• L has the structure of:
• G is -0-, -S-, or -NR';
• each R' is independently as defined above and described herein.
• L has the structure of:
• E is -0-, -S-, -NR'- or -C(R') 2 -;
• each R' is independently as defined above and described herein.
• L has the structure of:
• G is -0-, -S-, or -NR';
• each R' is independently as defined above and described herein.
• L has the structure of:
• E is -0-, -S-, -NR'- or -C(R') 2 -;
• — is a single or double bond
• each R L1 is taken together with the two carbon atoms to which they are bound to form an optionally substituted aryl, C 3 -Cio carbocyclic, heteroaryl or heterocyclic ring; and each R' is independently as defined above and described herein.
• L has the structure of:
• G is -0-, -S-, or -NR';
• — is a single or double bond
• each R L1 is taken together with the two carbon atoms to which they are bound to form an optionally substituted aryl, C 3 -Cio carbocyclic, heteroaryl or heterocyclic ring; and each R' is independently as defined above and described herein.
• L has the structure of:
• E is -0-, -S-, -NR'- or -C(R') 2 -;
• each R' is independently as defined above and described herein.
• L has the structure of:
• G is -0-, -S-, or -NR';
• R' is as defined above and described herein.
• L has the structure of:
• E is -0-, -S-, -NR'- or -C(R') 2 -;
• each R' is independently as defined above and described herein.
• L has the structure of:
• G is -0-, -S-, or -NR';
• R' is as defined above and described herein.
• L has the structure of:
• the phenyl ring is optionally substituted. In some embodiments, the phenyl ring is not substituted. In some embodiments, the phenyl ring is substituted.
• L has the structure of:
• the phenyl ring is optionally substituted. In some embodiments, the phenyl ring is not substituted. In some embodiments, the phenyl ring is substituted.
• L has the structure of:
• — is a single or double bond
• the two R L1 are taken together with the two carbon atoms to which they are bound to form an optionally substituted aryl, C 3 -C 10 carbocyclic, heteroaryl or heterocyclic ring.
• L has the structure of:
• G is -0-, -S-, or -NR';
• — is a single or double bond
• E is -0-, -S-, -NR.'- or -C(R') 2 -, wherein each R' independently as defined above and described herein.
• E is -0-, -S-, or -NR'-.
• E is -0-, -S-, or -NH-.
• E is -0-.
• E is -S-.
• E is -NH-.
• G is -0-, -S-, or -NR', wherein each R' independently as defined above and described herein.
• G is -0-, -S-, or - NH-.
• G is -0-.
• G is -S-.
• G is -NH-.
• L is -L 3 -G-, wherein:
• L is an optionally substituted C 1 -C5 alkylene or alkenylene, wherein one or more methylene units are optionally and independentl replaced by -0-, -S-,-N(R')-, -C(O)-, -C(S)-, -
• L is -L 3 -S-, wherein L 3 is as defined above and described
• L is -L -0-, wherein L is as defined above and described herein. In some embodiments, L is -L 3 -N(R')-, wherein each of L 3 and R' is independently as
• L is -L -NH-, wherein each of L and R' is independently as defined above and described herein.
• L is an optionally substituted C5 alkylene or alkenylene, wherein one or more methylene units are optionally and independently replaced by -0-, -S- -
• L 3 is an optionally substituted C 5 alkylene.
• -L -G- is
• L is an optionally substituted C 4 alkylene or alkenylene, wherein one or more methylene units are optionally and independently replaced by -0-, -S- - N(R')-, -C(O)-, -C(S)- -C(NR')-, -S(O)-, -S(0) 2 -, or and each of R' and Cy' is independently as defined above and described herein.
• L is an optionally substituted C3 alkylene or alkenylene, wherein one or more methylene units are optionally and inde endently replaced by -0-, -S- -
• L is s ⁇ ⁇ ⁇ ⁇ . In some embodiments, L is
• L 3 is an optionally substituted C 2 alkylene or alkenylene, wherein one or more methylene units are optionally and independently replaced by -0-, -S- - N(R')-, -C(O)-, -C(S)- -C(NR')-, -S(0) S(0) 2 -, or and each of R' and Cy' is independently as defined above and described herein.
• -L -G- is , wherein each of G and Cy' is
• L is
• L is -L 4 -G-, wherein L 4 is an optionally substituted Ci-C 2 alkylene; and G is as defined above and described herein.
• L is -L 4 -G-, wherein L 4 is an optionally substituted Ci-C 2 alkylene; G is as defined above and described herein; and G is connected to R 1 .
• L is -L 4 -G- wherein L 4 is an optionally substituted methylene; G is as defined above and described herein; and G is connected to R 1 .
• L is -L 4 -G-, wherein L 4 is methylene; G is as defined above and described herein; and G is connected to R 1 .
• L is -L 4 -G-, wherein L 4 is an optionally substituted -(CH 2 ) 2 -; G is as defined above and described herein; and G is connected to R 1 .
• L is -L 4 -G-, wherein L 4 is -(CH 2 ) 2 -; G is as defined above and described herein; and G is connec R 1 .
• L is or G wherein G is as defined above and described herein, and G is conne cted to R 1 . In some embodiments, L is wherein G is as defined above and described herein, and G is connected to R 1 . In some embodiments, L is G ; wherein G is as defined above and described herein, and G is connected to R 1 . In some embodiments, L is , or S wherein the sulfur atom is connected to R 1 . In some embodiments, L is ⁇ O , or ⁇ O , wherein the oxy atom is connected to R . [00324] In some embodiments, L is
• L is -S-R L3 - or -S-C(0)-R L3 -, wherein R L3 is an optionally substituted, linear or branched, C 1 -C9 alkylene, wherein one or more methylene units are optionally and independently replaced by an optionally substituted Ci-C 6 alkylene, Ci-C 6 alkenylene, -C ⁇ C- , -C(R') 2 -, -Cy-, -0-, -S-, -S-S-, -N(R')-, -C(O)-, -C(S)-, -C(NR')-, -C(0)N(R')-, -N(R')C(0)N(R')-, -N(R')C(0)-, -N(R')C(0)0-, -OC(0)N(R')-, -S(O)-, - S(0) 2 -, -S
• L is -S-R L3 - or -S-C(0)-R L3 -, wherein R L3 is an optionally substituted Ci-C 6 alkylene.
• L is -S-R L3 - or -S-C(0)-R Lj - wherein R L3 is an optionally substituted C 6 alkenylene.
• L is -S-R L3 - or -S-C(0)-R L3 -, wherein R L3 is an optionally substituted Ci_C 6 alkylene wherein one or more methylene units are optionally and independently replaced by an optionally substituted Ci-C 6 alkenylene, arylene, or heteroarylene.
• R L3 is an optionally substituted -S-(Ci-C 6 alkenylene)-, -S-(Ci-C6 alkylene)-, -S-(Ci-C 6 alkylene)-arylene-(C 1 -C 6 alkylene)-, -S-CO-
• L is . In some embodiments, L is ' ⁇ In some embodiments, [00328] In some embodiments, the sulfur atom in the L embodiments described above and herein is connected to X. In some embodiments, the sulfur atom in the L embodiments described above and herein is connected to R 1 .
• R 1 is halogen, R, or an optionally substituted Ci-Cso aliphatic wherein one or more methylene units are optionally and independently replaced by an optionally substituted Cr-C 6 alkylene, Cr-C 6 alkenylene, -C ⁇ C- -C(R') 2 - -Cy-, -0-, -S-, -S-S-, -N(R')-, -C(O)-, -C(S)-, -C( R')- - C(0)N(R')- -N(R')C(0)N(R')-, -N(R')C(0)-, -N(R')C(0)0-, -OC(0)N(R')-, -S(O)-, -S(0) 2 - , -S(0) 2 N(R')-, -N( ')S(0) 2 - -SC(O)-,
• R 1 is halogen, R, or an optionally substituted Ci-Cio aliphatic wherein one or more methylene units are optionally and independently replaced by an optionally substituted Ci-C 6 alkylene, Cr-C 6 alkenylene, -C ⁇ C- , -C(R') 2 -, -Cy-, -0-, -S-, -S-S-, -N(R')-, -C(O)-, -C(S)-, -C(NR')-, -C(0)N(R')-, -N(R')C(0)N(R')-, -N(R')C(0)-, -N(R')C(0)0-, -OC(0)N(R')-, -S(0)- - S(0) 2 -, -S(0) 2 N(R')-, -N(R')S(0) 2 -, -SC(O)-, -C(0)S-,
• R 1 is hydrogen. In some embodiments, R 1 is halogen. In some embodiments, R 1 is -F. In some embodiments, R 1 is -CI. In some embodiments, R 1 is - Br. In some embodiments, R 1 is -I.
• R is R wherein R is as defined above and described herein.
• R 1 is hydrogen. In some embodiments, R 1 is an optionally substituted group selected from Ci-Cso aliphatic, phenyl, carbocyclyl, aryl, heteroaryl, or heterocyclyl.
• R 1 is an optionally substituted Ci-Cso aliphatic. In some embodiments, R 1 is an optionally substituted Ci-Cio aliphatic. In some embodiments, R 1 is an optionally substituted Ci-C6 aliphatic. In some embodiments, R 1 is an optionally substituted C ⁇ - C 6 alkyl. In some embodiments, R 1 is optionally substituted, linear or branched hexyl. In some embodiments, R 1 is optionally substituted, linear or branched pentyl. In some embodiments, R 1 is optionally substituted, linear or branched butyl. In some embodiments, R 1 is optionally substituted, linear or branched propyl. In some embodiments, R is optionally substituted ethyl. In some embodiments, R 1 is optionally substituted methyl.
• R 1 is optionally substituted phenyl. In some embodiments, R 1 is substituted phenyl. In some embodiments, R 1 is phenyl.
• R 1 is optionally substituted carbocyclyl. In some embodiments, R 1 is optionally substituted C3-C 10 carbocyclyl. In some embodiments, R 1 is optionally substituted monocyclic carbocyclyl. In some embodiments, R 1 is optionally substituted cycloheptyl. In some embodiments, R 1 is optionally substituted cyclohexyl. In some embodiments, R 1 is optionally substituted cyclopentyl. In some embodiments, R 1 is optionally substituted cyclobutyl. In some embodiments, R 1 is an optionally substituted cyclopropyl. In some embodiments, R 1 is optionally substituted bicyclic carbocyclyl.
• R 1 is an optionally substituted Ci-Cso polycyclic hydrocarbon.
• R is an optionally substituted Ci-Cso polycyclic hydrocarbon wherein one or more methylene units are optionally and independently replaced by an optionally substituted Cr-C 6 alkylene, Ci-C 6 alkenylene,— C ⁇ C— ?
• R 1 is an optionally substituted Ci-Cso aliphatic comprising one or more optionally substituted polycyclic hydrocarbon moieties.
• R 1 is an optionally substituted aryl. In some embodiments, R 1 is an optionally substituted bicyclic aryl ring.
• R 1 is an optionally substituted heteroaryl. In some embodiments, R 1 is an optionally substituted 5-6 membered monocyclic heteroaryl ring having 1-3 heteroatoms independently selected from nitrogen, sulfur, or oxygen. In some embodiments, R 1 is a substituted 5-6 membered monocyclic heteroaryl ring having 1-3 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In some embodiments, R is an unsubstituted 5-6 membered monocyclic heteroaryl ring having 1-3 heteroatoms independently selected from nitrogen, sulfur, or oxygen.
• R 1 is an optionally substituted 5 membered monocyclic heteroaryl ring having 1-3 heteroatoms independently selected from nitrogen, oxygen or sulfur. In some embodiments, R 1 is an optionally substituted 6 membered monocyclic heteroaryl ring having 1-3 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R 1 is an optionally substituted 5-membered monocyclic heteroaryl ring having 1 heteroatom selected from nitrogen, oxygen, or sulfur. In some embodiments, R 1 is selected from pyrrolyl, furanyl, or thienyl.
• R 1 is an optionally substituted 5-membered heteroaryl ring having 2 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In certain embodiments, R is an optionally substituted 5-membered heteroaryl ring having 1 nitrogen atom, and an additional heteroatom selected from sulfur or oxygen. Exemplary R 1 groups include optionally substituted pyrazolyl, imidazolyl, thiazolyl, isothiazolyl, oxazolyl or isoxazolyl.
• R 1 is a 6-membered heteroaryl ring having 1-3 nitrogen atoms. In other embodiments, R is an optionally substituted 6-membered heteroaryl ring having 1-2 nitrogen atoms. In some embodiments, R 1 is an optionally substituted 6-membered heteroaryl ring having 2 nitrogen atoms. In certain embodiments, R 1 is an optionally substituted 6-membered heteroaryl ring having 1 nitrogen. Exemplary R 1 groups include optionally substituted pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, or tetrazinyl.
• R 1 is an optionally substituted 8-10 membered bicyclic heteroaryl ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R 1 is an optionally substituted 5,6-fused heteroaryl ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R 1 is an optionally substituted 5,6-fused heteroaryl ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R 1 is an optionally substituted 5,6-fused heteroaryl ring having 1 heteroatom independently selected from nitrogen, oxygen, or sulfur.
• R 1 is an optionally substituted indolyl.
• R 1 is an optionally substituted azabicyclo[3.2.1]octanyl. In certain embodiments, R is an optionally substituted 5,6-fused heteroaryl ring having 2 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In some embodiments, R 1 is an optionally substituted azaindolyl. In some embodiments, R 1 is an optionally substituted benzimidazolyl. In some embodiments, R 1 is an optionally substituted benzothiazolyl. In some embodiments, R 1 is an optionally substituted benzoxazolyl. In some embodiments, R 1 is an optionally substituted indazolyl. In certain embodiments, R 1 is an optionally substituted 5,6-fused heteroaryl ring having 3 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R 1 is an optionally substituted 6,6-fused heteroaryl ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In some embodiments, R 1 is an optionally substituted 6,6-fused heteroaryl ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In other embodiments, R 1 is an optionally substituted 6,6-fused heteroaryl ring having 1 heteroatom independently selected from nitrogen, oxygen, or sulfur. In some embodiments, R is an optionally substituted quinolinyl. In some embodiments, R 1 is an optionally substituted isoquinolinyl. According to one aspect, R 1 is an optionally substituted 6,6-fused heteroaryl ring having 2 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In some embodiments, R 1 is a quinazoline or a quinoxaline.
• R is an optionally substituted heterocyclyl.
• R 1 is an optionally substituted 3-7 membered saturated or partially unsaturated heterocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R 1 is a substituted 3-7 membered saturated or partially unsaturated heterocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R 1 is an unsubstituted 3-7 membered saturated or partially unsaturated heterocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R 1 is an optionally substituted heterocyclyl. In some embodiments, R 1 is an optionally substituted 6 membered saturated or partially unsaturated heterocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In some embodiments, R 1 is an optionally substituted 6 membered partially unsaturated heterocyclic ring having 2 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In some embodiments, R is an optionally substituted 6 membered partially unsaturated heterocyclic ring having 2 oxygen atoms.
• R 1 is a 3-7 membered saturated or partially unsaturated heterocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R 1 is oxiranyl, oxetanyl, tetrahydrofuranyl, tetrahydropyranyl, oxepaneyl, aziridineyl, azetidineyl, pyrrolidinyl, piperidinyl, azepanyl, thiiranyl, thietanyl, tetrahydrothiophenyl, tetrahydrothiopyranyl, thiepanyl, dioxolanyl, oxathiolanyl, oxazolidinyl, imidazolidinyl, thiazolidinyl, dithiolanyl, dioxanyl, morpholinyl, oxathianyl, piperazinyl,
• R 1 is an optionally substituted 5-6 membered partially unsaturated monocyclic ring having 1-2 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R 1 is an optionally substituted tetrahydropyridinyl, dihydrothiazolyl, dihydrooxazolyl, or oxazolinyl group.
• R 1 is an optionally substituted 8-10 membered bicyclic saturated or partially unsaturated heterocyclic ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
• R 1 is an optionally substituted indolinyl.
• R 1 is an optionally substituted isoindolinyl.
• R 1 is an optionally substituted 1, 2, 3, 4-tetrahydroquinoline.
• R 1 is an optionally substituted 1, 2, 3, 4-tetrahydroisoquinoline.
• R is an optionally substituted Cr-C 10 aliphatic wherein one or more methylene units are optionally and independently replaced by an optionally substituted Cr-C 6 alkylene, Ci-C 6 alkenylene,— C ⁇ C— ?
• R 1 is an optionally substituted Cr-C 10 aliphatic wherein one or more methylene units are optionally and independently replaced by an optionally-Cy-, - 0-, -S-, -S-S-, -N(R')-, -C(O)-, -C(S)- -C(NR')-, -C(0)N(R')-, -N(R')C(0)N(R')-, - N(R')C(0)- -N(R')C(0)0-, -OC(0)N(R')-, -S(O)-, -S(0) 2 -, -S(0) 2 N(R')-, -N(R')S(0) 2 -, - OC(O)-, or -C(0)0-, wherein each R' is independently as defined above and described herein.
• R 1 is an optionally substituted Ci-Cio aliphatic wherein one or more methylene units are optionally and independently replaced by an optionally-Cy-, -0-, -S-, -S- S-, -N(R')-, -C(O)-, -OC(O)-, or -C(0)0-, wherein each R' is independently as defined above and described herein.
• R 1 comprises a terminal optionally substituted -(C3 ⁇ 4)2- moiety which is connected to L.
• R 1 groups are depicted below:
• R 1 comprises a terminal optionally substituted -(C3 ⁇ 4)- moiety which is connected to L. Ecemplary such R 1 groups are depicted below:
• R 1 is -S-R L2 , wherein R L2 is an optionally substituted d- Cg aliphatic wherein one or more methylene units are optionally and independently replaced by an optionally substituted C ⁇ -Ce alkylene, Ci-C ⁇ alkenylene,— C ⁇ C— ?
• R 1 is -S-R L2 , wherein the sulfur atom is connected with the sulfur atom in L group.
• R 1 is -C(0)-R L2 , wherein R L2 is an optionally substituted Ci-Cg aliphatic wherein one or more methylene units are optionally and independently replaced by an optionally substituted Ci-C 6 alkylene, Ci-C6 alkenylene, C ⁇ C— ; _C(R') 2 -, -Cy-, -0-, -S-, -S-S-, -N(R')-, -C(0)-, -C(S)-, -C(NR')-, -C(0)N(R')-, -N(R')C(0)N(R')-, - N(R')C(0)-, -N(R')C(0)0-, -OC(0)N(R , -S(O)-, -S(0) 2 -, -S(0) 2 N(R')-, -N(R')S(0) 2 -, - SC(O
• R is -C(0)-R , wherein the carbonyl group is connected with G in L group.
• R 1 is -C(0)-R L2 , wherein the carbonyl group is connected with the sulfur atom in L group.
• R is optionally substituted C 1 -C9 aliphatic. In some embodiments, R is optionally substituted Ci-Cg alkyl. In some embodiments, R is optionally substituted C 1 -C9 alkenyl. In some embodiments, R is optionally substituted C 1 -C9 alkynyl.
• R is an optionally substituted Ci-Cg aliphatic wherein one or more methylene units are optionally and independently replaced by -Cy- or -C(O)-.
• R L2 is an optionally substituted C 1 -C9 aliphatic wherein one or more methylene
• L2 units are optionally and independently replaced by -Cy-.
• R is an optionally substituted C 1 -C9 aliphatic wherein one or more methylene units are optionally and
• R L2 independently replaced by an optionally substituted heterocycylene.
• R is an optionally substituted Ci-Cg aliphatic wherein one or more methylene units are optionally and independently replaced by an optionally substituted arylene.
• R L2 is an optionally substituted C 1 -C9 aliphatic wherein one or more methylene units are optionally and independently replaced by an optionally substituted heteroarylene.
• R L2 is an optionally substituted Ci-Cg aliphatic wherein one or more methylene units are optionally and independently replaced by an optionally substituted C3-C 10 carbocyclylene.
• R L2 is an optionally substituted Ci-Cg aliphatic wherein two methylene units are
• R is an optionally substituted C 1 -C9 aliphatic wherein two methylene units are optionally and inde endently replaced below:
• Ci-Cio aliphatic Ci-Cio aliphatic
• Ci-Cio aliphatic aryl
• Ci-C 6 heteroalkyl Ci-Cio aliphatic
• R is
• R 1 is an optionally substituted group selected from -S-
• the sulfur atom in the R 1 embodiments described above and herein is connected with the sulfur atom, G, E, or -C(O)- moiety in the L embodiments described above and herein.
• the -C(O)- moiety in the R 1 embodiments described above and herein is connected with the sulfur atom, G, E, or -C(O)- moiety in the L embodiments described above and herein.
• -L-R 1 is any combination of the L embodiments and R 1 embodiments described above and herein.
• -L-R is -L -G-R wherein each variable is independently as defined above and described herein.
• -L-R 1 is -L 4 -G-R 1 wherein each variable is independently as defined above and described herein.
• -L-R is -L -G-S-R , wherein each variable is independently as defined above and described herein.
• -L-R 1 is -L 3 -G-C(0)-R L2 , wherein each variable is independently as defined above and described herein.
• -L-R 1 is -R L3 -S-S-R L2 , wherein each variable is
• -L-R is -R " - C(0)-S-S-R L2 , wherein each variable is independently as defined above and described herein.
• -L-R 1 has the structure of:
• -L-R 1 has the structure of:
• -L- 1 has the structure of:
• -L-R 1 has the structure of:
• -L- 1 has the structure of:
• -L- 1 has the structure of:
• -L-R has the structure of:
• -L- 1 has the structure of:
• -L-R 1 has the structure of:
• -L-R 1 has the structure of:
• -L-R 1 has the structure of:
• -L-R 1 has the structure of: wherein each variable is independently as defined above and described herein.
• -L-R 1 has the structure of:
• -L-R has the structure of:
• -L-R 1 has the structure of:
• -L-R 1 has the structure of:
• -L-R 1 has the structure of:
• -L- 1 has the structure of:
• -L-R has the structure of:
• -L-R 1 has the structure of:
• -L-R 1 has the structure of:
• L has the structure of:
• -X-L-R 1 has the structure of:
• the phenyl ring is optionally substituted
• each of R 1 and X is inde endentl as defined above and described
• -L-R 1 is
• -L-R 1 [00396] In some embodiments, -L-R comprises a terminal optionally substituted - (CH 2 ) 2 - moiety which is connected to X. In some embodiments, -L-R 1 comprises a terminal - (CH 2 ) 2 - moiety which is connected to X. Exemplary such -L-R 1 moieties are depicted below:
• -L-R comprises a terminal optionally substituted - (CI3 ⁇ 4)- moiety which is connected to X.
• -L-R 1 comprises a terminal - - moiety which is connected to X. Exemplary such -L-R 1 moieties are depicted below:
• -L-R 1 is CH 3 -
• X is - - or -S-
• R 1 is
• L is a covalent bond and -L-R 1 is R 1 .
• -L-R 1 is not hydrog
• -X-L-R 1 is R 1 is
• bodiments, -X-L-R 1 has the structure of , wherein is optionally substituted. In some embodiments, some embodiments, In some
• -X-L-R 1 has the structure of , wherein X' is O or S, Y' is -0-, -S- or -NR'-, and the moiety is optionally substituted. In some embodiments, Y' is -0-, -S- or -NH-. In some embodiments is In some embodiments,
• X' is 0 or S, and the ⁇ 3 ⁇ 4 moiety is optionally substituted.
• R 1 embodiments, -X-L-R 1 is wherein the is substituted.
• -X-L-R 1 is is unsubstituted.
• -X-L-R 1 is R -C 0)-S-L x -S-, wherein L x is an
• R-C( X')-Y'-CH 2 -S-L X -S-.
• -X-L-R 1 is
• -X-L-R 1 groups described herein are cleavable and can be converted to -X after administration to a subject.
• -X-L-R 1 is cleavable.
• -X-L-R 1 is -S-L-R 1 , and is converted to -S ⁇ after administration to a subject.
• the conversion is promoted by an enzyme of a subject.
• methods of determining whether the -S-L-R 1 group is converted to -S ⁇ after administration is widely known and practiced in the art, including those used for studying drug metabolism and pharmacokinetics.
• the mtemucleotidic linkage of formula I has the stmcture of formula I-a:
• the mtemucleotidic linkage of formula I has the stmcture of formula I-b:
• the mtemucleotidic linkage of formula I is an phosphorothioate triester linkage having the stmcture of formula I-c:
• P* is an asymmetric phosphoms atom and is either ?p or Sp;
• L is a covalent bond or an optionally substituted, linear or branched Cr-C 10 alkylene, wherein one or more methylene units of L are optionally and independently replaced by an optionally substituted Ci-C 6 alkylene, Ci-C 6 alkenylene,— C ⁇ C— , -C(R') 2 - -Cy- -0-, -S-, -S-S-, -N(R')-, -C(O)-, -C(S)-, -C(NR')-, -C(0)N(R')-, -N(R')C(0)N(R')-, -N(R')C(0)-, - N(R')C(0)0-, -OC(0)N(R')-, -S(O)-, -S(0) 2 -, -S(0) 2 N(R')- -N(
• R is halogen, R, or an optionally substituted Ci-Cso aliphatic wherein one or more methylene units are optionally and independently replaced by an optionally substituted Ci-C 6 alkylene,
• Ci-C 6 alkenylene -C ⁇ C- -C(R') 2 -, -Cy-, -0-, -S-, -S-S-, -N(R')-, -C(O)-, -C(S)-, - C(NR')-, -C(0)N(R')-, -N(R')C(0)N(R')-, -N(R')C(0)-, -N(R')C(0)0-, -OC(0)N(R')-, - S(O)-, -S(0) 2 - -S(0) 2 N(R')-, -N(R')S(0) 2 -, -SC(O)-, -C(0)S-, -OC(O)-, or -C(0)0-; each R' is independently -R, -C(0)R, -C0 2 R, or -S0 2 R, or:
• -Cy- is an optionally substituted bivalent ring selected from phenylene, carbocyclylene, arylene, heteroarylene, or heterocyclylene;
• each R is independently hydrogen, or an optionally substituted group selected from Ci-C 6 aliphatic, phenyl, carbocyclyl, aryl, heteroaryl, or heterocyclyl; each independently represents a connection to a nucleoside; and
• R 1 is not -H when L is a covalent bond.
• the mtemucleotidic linkage having the structure of formula
• the present invention provides a chirally controlled oligonucleotide comprising one or more phosphate diester linkages, and one or more modified intemucleotide linkages having the formula of I-a, I-b, or I-c.
• the present invention provides a chirally controlled oligonucleotide comprising at least one phosphate diester mtemucleotidic linkage and at least one phosphorothioate triester linkage having the structure of formula I-c. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising at least one phosphate diester mtemucleotidic linkage and at least two phosphorothioate triester linkages having the stmcture of formula I-c.
• the present invention provides a chirally controlled oligonucleotide comprising at least one phosphate diester mtemucleotidic linkage and at least three phosphorothioate triester linkages having the stmcture of formula I-c. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising at least one phosphate diester internucleotidic linkage and at least four phosphorothioate triester linkages having the structure of formula I-c.
• the present invention provides a chirally controlled oligonucleotide comprising at least one phosphate diester internucleotidic linkage and at least five phosphorothioate triester linkages having the structure of formula I-c.
• the present invention provides a chirally controlled oligonucleotide comprising a sequence found in any of the Appendixes of the application. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising a sequence found in Appendix A. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising a sequence found in Appendix B. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising a sequence found in Appendix C.
• the present invention provides a chirally controlled oligonucleotide having a sequence found in any of the Appendixes of the application. In some embodiments, the present invention provides a chirally controlled oligonucleotide having a sequence found in Appendix A. In some embodiments, the present invention provides a chirally controlled oligonucleotide having a sequence found in Appendix B. In some embodiments, the present invention provides a chirally controlled oligonucleotide having a sequence found in Appendix C.
• the present invention provides a chirally controlled oligonucleotide comprising a sequence found in GCCTCAGTCTGCTTCGCACC. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising a sequence found in GCCTCAGTCTGCTTCGCACC, wherein the said sequence has over 50% identity with GCCTCAGTCTGCTTCGCACC. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising a sequence found in GCCTCAGTCTGCTTCGCACC, wherein the said sequence has over 60% identity with GCCTCAGTCTGCTTCGCACC.
• the present invention provides a chirally controlled oligonucleotide comprising a sequence found in GCCTCAGTCTGCTTCGCACC, wherein the said sequence has over 70% identity with GCCTCAGTCTGCTTCGCACC. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising a sequence found in GCCTCAGTCTGCTTCGCACC, wherein the said sequence has over 80% identity with GCCTCAGTCTGCTTCGCACC. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising a sequence found in GCCTCAGTCTGCTTCGCACC, wherein the said sequence has over 90% identity with GCCTCAGTCTGCTTCGCACC.
• the present invention provides a chirally controlled oligonucleotide comprising a sequence found in GCCTCAGTCTGCTTCGCACC, wherein the said sequence has over 95% identity with GCCTCAGTCTGCTTCGCACC. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising the sequence of GCCTCAGTCTGCTTCGCACC. In some embodiments, the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC.
• the present invention provides a chirally controlled oligonucleotide comprising a sequence found in GCCTCAGTCTGCTTCGCACC, wherein at least one internucleotidic linkage has a chiral linkage phosphorus. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising a sequence found in GCCTCAGTCTGCTTCGCACC, wherein at least one internucleotidic linkage has the structure of formula I.
• the present invention provides a chirally controlled oligonucleotide comprising a sequence found in GCCTCAGTCTGCTTCGCACC, wherein each internucleotidic linkage has the structure of formula I. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising a sequence found in GCCTCAGTCTGCTTCGCACC, wherein at least one internucleotidic linkage has the structure of formula I-c. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising a sequence found in GCCTCAGTCTGCTTCGCACC, wherein each internucleotidic linkage has the structure of formula I-c. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising a sequence found in
• the present invention provides a chirally controlled oligonucleotide comprising a sequence found in GCCTCAGTCTGCTTCGCACC, wherein each internucleotidic linkage is . in some embodiments, the present invention provides a chirally controlled oligonucleotide comprising a sequence found in GCCTCAGTCTGCTTCGCACC,
• the present invention provides a chirally controlled oligonucleotide comprising a sequence found in [00422] In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising the sequence of GCCTCAGTCTGCTTCGCACC, wherein at least one internucleotidic linkage has a chiral linkage phosphorus. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising the sequence of GCCTCAGTCTGCTTCGCACC, wherein at least one internucleotidic linkage has the structure of formula I.
• the present invention provides a chirally controlled oligonucleotide comprising the sequence of GCCTCAGTCTGCTTCGCACC, wherein each internucleotidic linkage has the structure of formula I. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising the sequence of GCCTCAGTCTGCTTCGCACC, wherein at least one internucleotidic linkage has the structure of formula I-c. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising the sequence of GCCTCAGTCTGCTTCGCACC, wherein each internucleotidic linkage has the structure of formula I-c. In some embodiments, the present invention provides a chirally controlled oligonucleotide comprising the sequence of
• the present invention provides a chirally controlled oligonucleotide comprising the sequence of GCCTCAGTCTGCTTCGCACC, wherein each internucleotidic
• the present invention provides a chirally controlled oligonucleotide comprising the TCAGTCTGCTTCGCACC,
• the present invention provides a chirally controlled oligonucleotide comprising the sequence of
• the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein at least one internucleotidic linkage has a chiral linkage phosphorus. In some embodiments, the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein at least one internucleotidic linkage has the structure of formula I. In some embodiments, the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein each internucleotidic linkage has the structure of formula I.
• the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein at least one internucleotidic linkage has the structure of formula I-c. In some embodiments, the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein each internucleotidic linkage has the structure of formula I-c. In some embodiments, the present invention provides a chirally controlled oligonucleotide having the sequence of
• the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein each internucleotidic linkage
• the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein at least one intemucleotidic linkage is In some embodiments, the present invention provides a chirally controlled oligonucleotide having
• the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein at least one linkage phosphorus is ?p. It is understood by a person of ordinary skill in the art that in certain embodiments wherein the chirally controlled oligonucleotide comprises an RNA sequence, each T is independently and optionally replaced with U. In some embodiments, the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein each linkage phosphorus is i?p.
• the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein at least one linkage phosphorus is Sp. In some embodiments, the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein each linkage phosphorus is Sp. In some embodiments, the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein the oligonucleotide is a blockmer.
• the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein the oligonucleotide is a stereoblockmer. In some embodiments, the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein the oligonucleotide is a P-modification blockmer. In some embodiments, the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein the oligonucleotide is a linkage blockmer.
• the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein the oligonucleotide is an altmer. In some embodiments, the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein the oligonucleotide is a stereoaltmer. In some embodiments, the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein the oligonucleotide is a P- modification altmer.
• the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein the oligonucleotide is a linkage altmer. In some embodiments, the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein the oligonucleotide is a unimer. In some embodiments, the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein the oligonucleotide is a stereounimer.
• the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein the oligonucleotide is a P-modification unimer. In some embodiments, the present mvention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein the oligonucleotide is a linkage unimer. In some embodiments, the present mvention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein the oligonucleotide is a gapmer. In some embodiments, the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein the oligonucleotide is a skipmer.
• the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein each cytosine is optionally and independently replaced by 5-methylcytosine.
• the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein at least one cytosine is optionally and independently replaced by 5-methylcytosine.
• the present invention provides a chirally controlled oligonucleotide having the sequence of GCCTCAGTCTGCTTCGCACC, wherein each cytosine is optionally and independently replaced by 5-methylcytosine.
• Exemplary chirally controlled oligonucleotides having the sequence of GCCTCAGTCTGCTTCGCACC are depicted in Table 2, below:
• a chirally controlled oligonucleotide is designed such that one or more nucleotides comprise a phosphorus modification prone to "autorelease" under certain conditions. That is, under certain conditions, a particular phosphorus modification is designed such that it self-cleaves from the oligonucleotide to provide, e.g., a phosphate diester such as those found in naturally occurring DNA and RNA.
• a phosphorus modification has a structure of-O-L-R 1 , wherein each of L and R 1 is independently as defined above and described herein.
• an autorelease group comprises a morpholino group.
• an autorelease group is characterized by the ability to deliver an agent to the internucleotidic phosphorus linker, which agent facilitates further modification of the phosphorus atom such as, e.g., desulfurization.
• the agent is water and the further modification is hydrolysis to form a phosphate diester as is found in naturally occurring DNA and RNA.
• a chirally controlled oligonucleotide is designed such that the resulting pharmaceutical properties are improved through one or more particular modifications at phosphorus. It is well documented in the art that certain oligonucleotides are rapidly degraded by nucleases and exhibit poor cellular uptake through the cytoplasmic cell membrane (Poijarvi-Virta et al, Curr. Med. Chem. (2006), 13(28);3441-65; Wagner et al, Med. Res. Rev. (2000), 20(6):417-51; Peyrottes et al, Mini Rev. Med. Chem.
• a modification at a linkage phosphorus is characterized by its ability to be transformed to a phosphate diester, such as those present in naturally occurring DNA and RNA, by one or more esterases, nucleases, and/or cytochrome P450 enzymes, including but not limited to, those listed in Table 3, below.
• CYP2C8 CYP2C9, CYP2C18, CYP2C19, CYP2D6, CYP2E1, CYP2F1, CYP2J2, CYP2R1, CYP2S1, CYP2U1, CYP2W1
• CYP3 CYP3A4 CYP3A5, CYP3A7, CYP3A43
• CYP8 CYP8A1 prostacyclin synthase
• CYP8B1 prostacyclin synthase
• CYP27 CYP27A1 (bile acid biosynthesis), CYP27B1
• vitamin D3 1 -alpha hydroxylase activates vitamin D3
• CYP27C1 unknown function
• CYP51 CYP51A1 (lanosterol 14-alpha demethylase)
• a modification at phosphorus results in a P-modification moiety characterized in that it acts as a pro-drug, e.g., the P-modification moiety facilitates delivery of an oligonucleotide to a desired location prior to removal.
• a P-modification moiety results from PEGylation at the linkage phosphorus.
• PEGylation is effected in order to reduce RES uptake and extend in vivo circulation lifetime of an oligonucleotide.
• a PEGylation reagent for use in accordance with the present invention is of a molecular weight of about 300 g/mol to about 100,000 g/mol. In some embodiments, a PEGylation reagent is of a molecular weight of about 300 g/mol to about 10,000 g/mol. In some embodiments, a PEGylation reagent is of a molecular weight of about 300 g/mol to about 5,000 g/mol. In some embodiments, a PEGylation reagent is of a molecular weight of about 500 g/mol. In some embodiments, a PEGylation reagent of a molecular weight of about 1000 g/mol. In some embodiments, a PEGylation reagent is of a molecular weight of about 3000 g/mol. In some embodiments, a PEGylation reagent is of a molecular weight of about 5000 g/mol.
• a PEGylation reagent is PEG500. In certain embodiments, a PEGylation reagent is PEG 1000. In certain embodiments, a PEGylation reagent is PEG3000. In certain embodiments, a PEGylation reagent is PEG5000.
• a P-modification moiety is characterized in that it acts as a PK enhancer, e.g., lipids, PEGylated lipids, etc.
• a P-modification moiety is characterized in that it acts as an agent which promotes cell entry and/or endosomal escape, such as a membrane-disruptive lipid or peptide. [00435] In some embodiments, a P-modification moiety is characterized in that it acts as a targeting agent. In some embodiments, a P-modification moiety is or comprises a targeting agent.
• targeting agent is an entity that is associates with a payload of interest (e.g., with an oligonucleotide or oligonucleotide composition) and also interacts with a target site of interest so that the payload of interest is targeted to the target site of interest when associated with the targeting agent to a materially greater extent than is observed under otherwise comparable conditions when the payload of interest is not associated with the targeting agent.
• a targeting agent may be, or comprise, any of a variety of chemical moieties, including, for example, small molecule moieties, nucleic acids, polypeptides, carbohydrates, etc. Targeting agents are described further by Adarsh et al., "Organelle Specific Targeted Drug Delivery - A Review," International Journal of Research in Pharmaceutical and Biomedical Sciences, 2011, p. 895.
• targeting agents include, but are not limited to, proteins (e.g. Transferrin), oligopeptides (e.g., cyclic and acylic RGD-containing oligopedptides), antibodies (monoclonal and polyclonal antibodies, e.g. IgG, IgA, IgM, IgD, IgE antibodies), sugars / carbohydrates (e.g., monosaccharides and/or oligosaccharides (mannose, mannose-6-phosphate, galactose, and the like)), vitamins (e.g., folate), or other small biomolecules.
• proteins e.g. Transferrin
• oligopeptides e.g., cyclic and acylic RGD-containing oligopedptides
• antibodies monoclonal and polyclonal antibodies, e.g. IgG, IgA, IgM, IgD, IgE antibodies
• sugars / carbohydrates e.g., monosacc
• a targeting moiety is a steroid molecule (e.g., bile acids including cholic acid, deoxycholic acid, dehydrocholic acid; cortisone; digoxigenin; testosterone; cholesterol; cationic steroids such as cortisone having a trimethylaminomethyl hydrazide group attached via a double bond at the 3-position of the cortisone ring, etc.).
• a targeting moiety is a lipophilic molecule (e.g., alicyclic hydrocarbons, saturated and unsaturated fatty acids, waxes, terpenes, and polyalicyclic hydrocarbons such as adamantine and buckminsterfullerenes).
• a lipophilic molecule is a terpenoid such as vitamin A, retinoic acid, retinal, or dehydroretinal.
• a targeting moiety is a peptide.
• a P-modification moiety is a targeting agent of formula— X-L-R 1 wherein each of X, L, and R 1 are as defined in Formula I above.
• a P-modification moiety is characterized in that it facilitates cell specific delivery.
• a P-modification moiety is characterized in that it falls into one or more of the above-described categories.
• a P- modification moiety acts as a PK enhancer and a targeting ligand.
• a P- modification moiety acts as a pro-drug and an endosomal escape agent.

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