申请人:Manoharan Muthiah
公开号:US20090247614A1
公开(公告)日:2009-10-01
The present invention provides iRNA agent including at least one monomer having the structure shown in formula (I′)
wherein:
A and B are each independently for each occurrence O, N(R
N
) or S;
X is H, a protecting group, a phosphate group, a phosphodiester group, an activated phosphate group, an activated phosphite group, a phosphoramidite, a solid support, —P(Z′)(Z″)O-nucleoside, —P(Z′)(Z″)O-oligonucleotide, a lipid, a PEG, a steroid, a polymer, —P(Z′)(Z″)O-L
6
-Q′-L
7
-OP(Z′″)(Z″″)O-oligonucleotide, a nucleotide, or an oligonucleotide;
Y is H, a protecting group, a phosphate group, a phosphodiester group, an activated phosphate group, an activated phosphite group, a phosphoramidite, a solid support, —P(Z′)(Z″)O-nucleoside, —P(Z′)(Z″)O-oligonucleotide, a lipid, a PEG, a steroid, a lipophile, a polymer, —P(Z′)(Z″)O-L
6
-Q′-L
7
-OP(Z′″)(Z″″)O-oligonucleotide, a nucleotide, or an oligonucleotide;
R is folate, a folate analog a folate mimic or a folate receptor binding ligand;
L
6
and L
1
are each independently for each occurrence —(CH
2
)
n
—, —C(R′)(R″)(CH
2
)
n
—, —(CH
2
)
n
C(R′)(R″)—, —(CH
2
CH
2
O)
m
CH
2
CH
2
—, or —(CH
2
CH
2
O)
m
CH
2
CH
2
NH—;
Q′ is NH, O, S, CH
2
, C(O)O, C(O)NH, —NH—CH(R
a
)—C(O)—, —C(O)—CH(R
a
)—NH—, CO,
where R
a
is H or amino acid side; chain.
R′ and R″ are each independently H, CH
3
, OH, SH, NH
2
, NH(Alkyl=Me, Et, Pr, isoPr, Bu, Bn) or N(diAlkyl=Me
2
, Et
2
, Bn
2
);
Z′, Z″, Z′″ and Z″″ are independently O or S;
n represent independently for each occurrence 1-20; and
m represent independently for each occurrence 0-50.
本发明提供了iRNA试剂,包括至少一个单体,其结构如式(I')所示,其中:A和B分别独立于每个出现的O、N(RN)或S;X是H、保护基、磷酸基、磷酸二酯基、活性磷酸基、活性磷酸酯基、磷酰胺基、固体支持、-P(Z')(Z")O-核苷、-P(Z')(Z")O-寡核苷酸、脂质、PEG、类固醇、聚合物、-P(Z')(Z")O-L6-Q' -L7-OP(Z' ")(Z" ")O-寡核苷酸、核苷酸或寡核苷酸;Y是H、保护基、磷酸基、磷酸二酯基、活性磷酸基、活性磷酸酯基、磷酰胺基、固体支持、-P(Z')(Z")O-核苷、-P(Z')(Z")O-寡核苷酸、脂质、PEG、类固醇、亲脂性物质、聚合物、-P(Z')(Z")O-L6-Q' -L7-OP(Z' ")(Z" ")O-寡核苷酸、核苷酸或寡核苷酸;R是叶酸、叶酸类似物、叶酸模拟物或叶酸受体结合配体;L6和L1分别独立于每个出现的-(CH2)n-、-C(R')(R")(CH2)n-、-(CH2)nC(R')(R")-、-(CH2CH2O)mCH2CH2-或-(CH2CH2O)mCH2CH2NH-;Q'是NH、O、S、CH2、C(O)O、C(O)NH、-NH-CH(Ra)-C(O)-、-C(O)-CH(Ra)-NH-、CO,其中Ra是H或氨基酸侧链;R'和R"各自独立于H、CH3、OH、SH、NH2、NH(Alkyl=Me、Et、Pr、isoPr、Bu、Bn)或N(diAlkyl=Me2、Et2、Bn2);Z'、Z"、Z' "和Z" "各自独立于O或S;n独立于每个出现的1-20;m独立于每个出现的0-50。