L-Tyrosine, 5′-ester with uridine 4-oxime

L-Phenylalanine, 5′-ester with uridine 4-oxime

L-Methionine, 5′-ester with uridine 4-oxime

L-Leucine, 5′-ester with uridine 4-oxime

L-Isoleucine, 5′-ester with uridine 4-oxime

L-Valine, 5′-ester with uridine 4-oxime

L-Alanine, 5′-ester with uridine 4-oxime

Glycine, 5′-ester with uridine 4-oxime

1-[(5E)-3-O-[[Bis(1-methylethyl)amino](2-cyanoethyl)phosphino]-5,6-dideoxy-6-(diethoxyphosphinyl)-2-O-methyl-β-D-ribo-hex-5-enofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[(5E)-5,6-Dideoxy-6-(diethoxyphosphinyl)-3-O-[(1,1-dimethylethyl)diphenylsilyl]-2-O-methyl-β-D-ribo-hex-5-enofuranosyl]-2,4(1H,3H)-pyrimidinedione

N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-α-D-erythro-pentofuranosyl]-1,2-dihydro-5-(1,7-octadiyn-1-yl)-2-oxo-4-pyrimidinyl]-N,N-dibutylmethanimidamide

N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-α-D-erythro-pentofuranosyl]-1,2-dihydro-5-(1,7-octadiyn-1-yl)-2-oxo-4-pyrimidinyl]-N,N-dibutylmethanimidamide

4-Amino-1-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-α-D-erythro-pentofuranosyl]-5-(1,7-octadiyn-1-yl)-2(1H)-pyrimidinone

N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-α-D-erythro-pentofuranosyl]-1,2-dihydro-5-iodo-2-oxo-4-pyrimidinyl]-N,N-dibutylmethanimidamide

N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-α-D-erythro-pentofuranosyl]-1,2-dihydro-5-iodo-2-oxo-4-pyrimidinyl]-N,N-dibutylmethanimidamide