4-desmethyl nucleoside analogs and oligomers thereof

A method for forming a compound having structure:

• comprising the steps of:
• providing a first compound having structure:
• contacting said first compound with a second compound having a member of formula:
• said contacting being for a time and under reaction conditions effective to form a linkage between said first and said second compounds;
• wherein:
• L is a group of formula:
• R7—{W}a—{S—(CH2)q}u—{HN—(CH2)n}t—{O—(CH2)m}v—Z—
• wherein:
• t, u and v are each independently integers from 0 to 200;
• m, n and q are each independently integers from 1 to 4;
• Z is S, O or HN;
• R7 is RC, H, or a protecting group;
• n is an integer greater than 0;
• BX is a nucleobase;
• X is H, OH, O-alkyl, O-alkoxylalkyl, O-alkylamino, or F;
• Q is O;
• W is the residue of a linking moiety, and said linking moiety being selected from the group consisting of acid chlorides, anhydrides, cyclic anhydrides, alkyl halides, organometallics, chloroformates, isocynates, hydrazines, acids, hydroxylamines, semicarbazines, thiosemicarbazines, hydrazones, hydrazides, trityl thiol, oximes, hydrazide-hydrazones, semicarbazones and semithiocarbazones;
• a is 0 or 1;
• RC is alkyl, alkenyl, alkynyl, a polyamine, a polyether, a polythioether, a steroid molecule, a reporter molecule, an aromatic lipophilic molecule, a non-aromatic lipophilic molecule, a reporter enzyme, a peptide, a protein, a water soluble vitamin, a lipid soluble vitamin, a carbohydrate, a terpene molecule, a phospholipid, an intercalator, a cell receptor binding molecule, a crosslinking agent, or a porphyrin;
• provided that t, u and v are not all simultaneously 0;
• L1 is CR1aR1b or Z1;
• L2 is CR2aR2b or Z2;
• L3 is CR3aR3b or Z3;
• L4 is Z4;
• RE is trifluoromethylsulfonyl, methylsulfonyl, halogens, O-trichloroacetimidate, acyloxy, dialkyl phosphite, 2,4,6-trichlorophenyl, p-toluenesulfonyl, 4-dimethylaminoazobenzenesulfonyl or 5-dimethylaminonaphthalenesulfonyl;
• RF is L1—L2—L3Z4;
• Z1, Z2, Z3 and Z4 are, independently, O, NR4, S, SO, SO2, Se, P(═Y1)Y2 or Si(R6)2;
• R1a, R1b, R2a, R2b, R3a and R3b are, independently, H, R5, O—R5, S—R5, NR4R5;
• or, independently, together R1a and R1b, or R2a and R2b, or R3a and R3b are ═O;
• Y1 is O, S, Se, or NR4;
• Y2 is OH, OR5, SH, SR5, SeH, R5, BH3 or NR4R5;
• and
• R4, R5 and R6 are, independently, one of:
• an electron pair of a multiple bond;
• H;
• straight or branched chain alkyl or substituted alkyl;
• straight or branched chain alkenyl or substituted alkenyl;
• straight or branched chain alkynyl or substituted alkynyl;
• 14C-containing lower alkyl, lower alkenyl or lower alkynyl;
• substituted or unsubstituted alkaryl or aralkyl;
• 14C-containing alkaryl or aralkyl;
• aryl;
• alicyclic;
• a reporter molecule;
• and where said substituents are OH, ═O, CO2H, 0-alkyl, SH, S-alkyl, NH-alkyl, N-(alkyl)2, alkyl, F, Cl, Br, CN, CF3, OCF3, OCN, SOCH3, SO2CH3, ONO2, NO2, N3, NH2, aryl, aralkyl, sulfide, or silyl.

A method for forming a compound having structure:

• providing a first compound having structure:
• contacting said first compound with a second compound comprising a member having formula:
• said contacting being for a time and under reaction conditions effective to form a linkage between said first and said second compounds;
• wherein:
• RC is O-alkyl, O-alkenyl, O-alkynyl, O-aryl, O-alkaryl, O-aralkyl, a polyglycol, an aromatic or nonaromatic ring system, a polyamine, a polyether, a steroid molecule, a reporter molecule, an aromatic lipophilic molecule, a non-aromatic lipophilic molecule, a reporter enzyme, a peptide, a protein, a water soluble vitamin, a lipid soluble vitamin, a carbohydrate, a terpene molecule, a phospholipid, an intercalator, a cell receptor binding molecule, a crosslinking agent, or a porphyrin;
• n is an integer greater than 0;
• BX is a nucleobase;
• X is H, OH, O-alkyl, O-alkoxylalkyl, O-alkylamino, or F;
• Q is O, S, CH2, CHF or CF2;
• L1 is CR1aR1b or Z1;
• L2 is CR2aR2b or Z2;
• L3 is CR3aR3b or Z3;
• L4 is Z4;
• RE is trifluoromethylsulfonyl, methylsulfonyl, halogens, O-trichloroacetimidate, acyloxy, dialkyl phosphite, 2,4,6-trichlorophenyl, p-toluenesulfonyl, 4-dimethylaminoazobenzenesulfonyl or 5-dimethylaminonaphthalenesulfonyl;
• RF is L1—L2—L3Z4;
• Z1, Z2, Z3 and Z4 are, independently, O, NR4, S, SO, SO2, Se, P(═Y1)Y2 or Si(R6)2;
• R1a, R1b, R2a, R2b, R3a and R3b are, independently, H, R5, O—R5, S—R5, NR4R5;
• independently, together R1a and R1b, or R2a and R2b, or R3a and R3b are ═O;
• Y1 is O, S, Se, or NR4;
• Y2 is OH, OR5, SH, SR5, SeH, R5, BH3 or NR4R5;
• and
• R4, R5 and R6 are, independently, one of:
• an electron pair of a multiple bond;
• H;
• straight or branched chain alkyl or substituted alkyl;
• straight or branched chain alkenyl or substituted alkenyl;
• straight or branched chain alkynyl or substituted alkynyl;
• 14C-containing lower alkyl, lower alkenyl or lower alkynyl;
• substituted or unsubstituted alkaryl or aralkyl;
• 14C-containing alkaryl or aralkyl;
• aryl;
• alicyclic;
• a reporter molecule;
• and where said substituents are OH, ═O, CO2H, 0-alkyl, SH, S-alkyl, NH-alkyl, N-(alkyl)2, alkyl, F, Cl, Br, CN, CF3, OCF3, OCN, SOCH3, SO2CH3, ONO2, NO2, N3, NH2, aryl, aralkyl, sulfide, or silyl.

A method for forming a compound having structure:

• comprising the steps of:
• providing a first compound having, structure:
• contacting said first compound with a second compound comprising a member having formula:
• said contacting being for a time and under reaction conditions effective to form a linkage between said first and said second compounds;
• wherein:
• J is a leaving group;
• n is an integer greater than 0;
• BX is a nucleobase;
• X is H, OH, O-alkyl, O-alkoxylalkyl, O-alkylamino, or F;
• Q is O, S, CH2, CHF or CF2;
• L1 is CR1aR1b or Z1;
• L2 is CR2aR2b or Z2;
• L3 is CR3aR3b or Z3;
• L4 is Z4;
• RE is trifluoromethylsulfonyl, methylsulfonyl, halogens, O-trichloroacetimidate, acyloxy, dialkyl phosphite, 2,4,6-trichlorophenyl, p-toluenesulfonyl, 4-dimethylaminoazobenzenesulfonyl or 5-dimethylaminonaphthalenesulfonyl;
• RF is L1—L2—L3Z4;
• Z1, Z2, Z3 and Z4 are, independently, O, NR4, S, SO, SO2, Se, P(═Y1)Y2 or Si(R6)2;
• R1a, R1b, R2a, R2b, R3a and R3b are, independently, H, R5, O—R5, S—R5, NR4R5;
• independently, together R1a and R1b, or R2a and R2b, or R3a and R3b are ═O;
• Y1 is O, S, Se, or NR4;
• Y2 is OH, OR5, SH, SR5, SeH, R5, BH3 or NR4R5;
• and
• R4, R5 and R6 are, independently, one of:
• an electron pair of a multiple bond;
• H;
• straight or branched chain alkyl or substituted alkyl;
• straight or branched chain alkenyl or substituted alkenyl;
• straight or branched chain alkynyl or substituted alkynyl;
• 14C-containing lower alkyl, lower alkenyl or lower alkynyl;
• substituted or unsubstituted alkaryl or aralkyl;
• 14C-containing alkaryl or aralkyl;
• aryl;
• alicyclic;
• a reporter molecule;
• and where said substituents are OH, ═O, CO2H, O-alkyl, SH, S-alkyl, NH-alkyl, N-(alkyl)2, alkyl, F, Cl, Br, CN, CF3, OCF3, OCN, SOCH3, SO2CH3, ONO2, NO2, N3, NH2, aryl, aralkyl, sulfide, or silyl.