| 摘要 |
3'-Derivatised oligonucleotide analogues of formula (I) and (II) and their salts are new: R<1>-(A<1>)n'-(B<1>)m'-(A<2>)n-(B<2>)m-B<3> (I); R<1>-(A<1>)n'-(B<1>)m'-(A<2>)n-A<3> (II); A<1> and A<2> = gps. of formula (i); B<1> and B<2> = gps. of formula (ii); B<3> = a gp. of formula (iii); and A<3> = a gp. of formula (iv); a and b = 0 to 20; R<1> = H, 1-18C alkyl, 2-18C alkenyl, 3-18C alkynyl, 2-19C alkanoyl, 3-20C alkenoyl, 4-20C alkynoyl, 6-20C aryl, (6-14C)aryl(1-8C)alkyl or P(W)ZZ'; R<2> = H, OH, 1-18C alkoxy, halogen, azido or NH2; D = OH or OPO3<2->; B = a natural or unnatural nucleotide base; n = 1-100; n' = 0-50; m = 0-5; m' = 0-5 in (I) or 1-5 in (II); A = O, S or CH2; W = O, S or Se; V = O or S; T = O, S or NH; Y = O, S, NH or CH2; X = OH or SH; U = OH, SH, BH3 (sic), SeH, 1-18C alkoxy, 1-18C alkyl, 6-20C aryl, (6-14C)aryl(1-8C)alkyl, NHR<3>, NR<3>R<4> or (OCH2CH2)pO(CH2)qCH2R<5>; R<3> = 1-18C alkyl, 6-20C aryl, (6-14C)aryl(1-8C)alkyl or (CH2)c(NH(CH2)c)dNR<6>R<6>; c = 2-6; d = 0-6; R<6> = H, 1-6C alkyl or (1-4C)alkoxy(1-6C)alkyl; R<4> = 1-18C alkyl, 6-20C aryl or (6-14C)aryl(1-8C)alkyl; or NR<3>R<4> = a 5- or 6-membered ring opt. contg. another N, O or S atom; p = 1-100; q = 0-22; R<5> = H or a functional gp. such as OH, NH2, NHR<7>, COOH, CONH2, COOR<8> or halogen; R<7> = 1-6C alkyl, R<8> = 1-4C alkyl; Z and Z' = OH, SH, SeH, 1-22C alkoxy, O(CH2)bNHR<7>'R<8>', 1-18C alkyl, 6-20C aryl, (6-14)aryl(1-8C)alkyl (where aryl includes heteroaryl and is opt. substd. by 1-3 of COOH, NH2, NO2, 1-4C alkylamino, 1-6C alkoxy, OH, halogen and CN), 1-18C alkylthio, NHR<3>, NR<3>R<4>, a 3'- or 5'-linked nucleoside or oligonucleotide, or a gp. which enhances intracellular uptake, serves as a DNA probe label or binds to, crosslinks with or cleaves a target nucleic acid after hybridisation; R<7>'R<8>' = as R<7>, R<8>; or NR<7>'R<8> = a 3- to 6-membered ring. |
