Nucleic Acids Research, 1988, Vol. 16, No. 10 4607-4620
© 1988
Articles |
Synthesis of cyclic oligonucleotides by a modified phosphotriester approach
Gorlaeus Laboratory PO Box 9502, 2300 RA Leiden, The Netherlands
Received March 4, 1988. Revised April 15, 1988. Accepted April 15, 1988.
Evidence will be presented to show that the allyl group is suitable for the protection of a 3'-terminal phosphodiester function. The latter will be demonstrated by the synthesis, via a phosphotriester approach, of two cyclic tetraribonucleotides [r(AAAA) and r(UAMe2UAMe2)], two cyclic hexadeoxyribonucleotides [d(CGCGCG) and d(TAAAAA)] and a cyclic octadeoxyribonucleotide [d(CGTGCGTG)]