| CPC C07D 405/14 (2013.01) [A61K 47/56 (2017.08); A61K 47/68033 (2023.08); A61K 47/68037 (2023.08); A61K 47/6809 (2017.08); C08G 83/003 (2013.01)] | 19 Claims |
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1. A bifurcated SA monomer having a chemical structure of Formula I:
![]() wherein
each of Z1, Z2, and Z3 is independently selected from the group consisting of R11,
![]() and at least one of Z1, Z2, and Z3 is not R11;
each R11 is independently selected from the group consisting acetyl, acetate, benzoyl, benzyl, beta-methoxyethoxymethyl ether, dimethoxytrityl, methoxymethyl ether, methoxytrityl [(4-methoxyphenyl)diphenylmethyl], p-methoxybenzyl ether, methythiomethyl ether, pivaloyl, tetrahydropyranyl, tetrahydrofuran, tetrahydrothiofuranyl, trityl, silyl ether, C1-C8 alkyl silyl, methyl ethers, and ethoxyethyl ethers;
each R21 is independently selected from the group consisting of hydrogen, acetyl, benzoyl, benzyl, beta-methoxyethoxymethyl ether, dimethoxytrityl, methoxymethyl ether, methoxytrityl [(4-methoxyphenyl)diphenylmethyl], p-methoxybenzyl ether, methythiomethyl ether, pivaloyl, tetrahydropyranyl, tetrahydrofuran, tetrahydrothiofuranyl, trityl, silyl ether, C1-C8 alkyl silyl, methyl ethers, ethoxyethyl ethers, C1-C8 alkyl, cyclic ortho ester, and acetonide of vicinal alcohol;
n is an integer selected from 2 to 8;
m is an integer selected from 1 to 8;
p is an integer selected from 0 to 50;
n1 is an integer selected from 1 to 4;
m1 is an integer selected from 1 to 4;
each L is independently selected from the group consisting of R2 and a structure of —V1—R2—V2—, wherein V1 and V2 are independently selected from the group consisting of a Diels-Alder adduct, a 1,3-dipolar adduct, —C(R4)(═N)—O—, —O—C(R4)(═N)—, —S—CH2—C(═O)—NH—, —NH—C(═O)—CH2—S—, —C(=G2)-G1-, -G1-C(=G2)-, -G3-, -G1-C(=G2)-G1-, —S—S—, —S—(CH2)2—S(O)2—, —S(O)2—(CH2)2—S—, —S(O)2—N(R3)—, —N(R3)—S(O)2—, —C(O)—NH—NH—CH2—, —C(O)—NH—N═CH—, —CH═N—NH—C(O)—, —CH2—NH—NH—C(O)—, —N(R3)—S(O)2—N(R3)—, —C(O)—NH—CH(CH2SH)—, —N═CH—, —NH—CH2—, —NH—C(O)—CH2—C(O)—NH—, —CH═N-G4-, —CH2—NH-G4-, -G4-NH—CH2—, -G4-N═CH—, —C(═NH2+)—NH—, —NH—C(═NH2+)—, —O—P(═O)(O−)—NH—, —NH—P(═O)(O−)—O—, —CH2—CH(NH2)—CH2—S—, —S—CH2—CH(NH2)—CH2—, —O—P(═O)(O−)—O—, —O—P(═O)(S−)—O—, —O—P(═S)(S−)—O—,
![]() wherein
each G1 is independently selected from NR3, O, and S;
each G2 is independently O or S;
each G3 is independently selected from S, O, NR3, and SO2;
each G4 is independently O or NR3;
each R2 is independently selected from a bond, C1-C12 alkyl, —(CH2CH2O)1-10—, —(CH2CH2O)1-10—CH2—, —CH2—(CHOH)1-6—, —(CHOH)1-6—CH2—, —(CHOH)1-6—, optionally substituted alicyclyl, heteroalicyclyl, aryl, a peptide, p-aminobenzylcarbonyl spacer, a peptide with p-aminobenzylcarbonyl spacer, a dipeptide with p-aminobenzylcarbonyl spacer, and a peptidomimetic oligomer;
each R3 is independently selected from hydrogen, C1-C8 alkyl, —(OCH2CH2)1-3, optionally substituted alicyclyl, and optionally substituted heteroalicyclyl,
each R4 is independently selected from C1-C16 alkyl,
each X is independently selected from —OH, -J, —R5J, —C(═O)-J, —C(═O)—CH2-J, —NH—C(═O)—CH2-J, —OR5, —OR6, —OR7, —O-mesyl, —O-tosyl, —NH—C(═O)—CH2—O-mesyl, —NH—C(═O)—CH2—O-tosyl, —SH, —S—S-t-butyl, —SR7, —SR5, —S—S—R8, —NH—C(═O)—R9—S—S—R8, —NH—C(═O)—CH2—SH, —S(═O)2-J, —NH—C(═O)—R9—S—C(═O) R5, —NH2, —NHR5, —N(R5) R5, —NHR7, —NH-Fmoc, —NH-Boc, N-(phthalimidyl), —C(═O) H, —C(═O)—R5, NH—C(═O)—R9—C(═O)—R5, —C(═O)OH, NH—C(═O)—R9—C(═O)OH, —N═C═S, —N═C—O, —C≡C—R5, —N═N+=N−, —O—NH2, —O—NH-Fmoc, —O—NH-Boc, —O—N-(Boc)2, —O—N(-phthalimidyl), —NH—C(═O)—R9—O—NH-Boc, —NH—C(═O)—R9—O—N-(Boc)2, NH—C(═O)—R9—O—N(-phthalimidyl), —NH—NH2, —C(═O)—NH—NH2, —NH—C(═O)—NH—NH2, —NH—C(═S)—NH—NH2, -toluenesulfonylhydrazide, —R5—NH—C(═NH2+)—NH2, —NH—C(═NH2+)—CH2CH2CH2—SH,
![]() a benzophenone, an aryl diazonium, a diazoalkane, a diazoacetyl, an anthraquinone, a diazirine, an optionally substituted trifluoromethylphenyldiazirine, a diene, a dienophile, a 1,3-dipole, a dipolarophile, an alkene, a ketene, an alkene with allylic hydrogen, a dicarbonyl group, an epoxide, an oxirane, an organosilane, a phosphonium group, an ester, an anhydride, a carbonate group, a glyoxal, —C(═N+H2)—O—R5, a hydroxymethyl phosphine, an ethyl vinyl, a maleimide, a vinylsulfone, an allyl sulfone, a thioester, a cisplatin, an aziridine, and an acryloyl group,
wherein
each R5 is independently selected from optionally substituted C1-C8 alkyl, alicyclyl, heteroalicyclyl, benzyl, and aryl, wherein any ring in R5 is optionally substituted;
each R6 is independently selected from benzoyl, acetyl, benzyl, C1-C8 alkyl silyl, tetrahydropyranyl, tetrahydrofuranyl, and tetrahydrothiofuranyl;
each R7 is independently selected from trityl, MMT, and DMT;
each R8 is independently selected from 2-pyridyl, 4-pyridyl, 5-nitro-2-pyridyl, 5-nitro-4-pyridyl, 2-nitrophenyl, 4-nitrophenyl, 3-carboxy-4-nitrophenyl, and 2,4-dinitrophenyl;
each R9 is independently selected from C1-C16 alkyl; and
each J is independently selected from Cl, Br and I.
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