I. Rasolonjatovo et al., 3'-MODIFIED NUCLEOTIDES FOR DNA-SEQUENCING WITHOUT GEL-ELECTROPHORESIS, Nucleosides & nucleotides, 16(7-9), 1997, pp. 1757-1760
zyl-3'-O-[(6-azido-2,3,6-trideoxy-4,5-di-O-benzyl) hexanoyl] thymidine
5'-yl phosphate 8a was prepared. Catalytic hydrogenolysis removed onl
y the benzyl esters and reduced the azido group. When the benzyl ether
s were replaced by p-phenylbenzyl or allyl ethers, their deprotection
also failed.