5′‐<i>P</i>‐Borane‐Substituted Thymidine Monophosphate and Triphosphate

Abstract

The attachment of the BH3 group to the phosphorus atom is the crucial step in the synthesis of boranophosphate 1 and -triphosphate 2. These compounds could be as useful in biochemical and molecular biological investigations as the related thiophosphates because of the prochiral (in 1) and chiral (in 2) phosphorus centers and the similar charge distribution to the thiophosphates.