摘要:
Michaelis-Arbusov chemistry was used to prepare O,S-dialkyl 3 '-O-nucleosidyl phosphorothiolate triesters in solution and attached to CPG. The support-bound nucleoside was utilised in the synthesis of a pentaribonucleotide that was fully deprotected on the support. Subsequent treatment with a buffered solution of iodine cleaved the RNA from the CPG with concomitant formation of a terminal 2 ',3 '-cyclic phosphate. (C) 1998 Elsevier Science Ltd. All rights reserved.