3'-levulinyl thymidylyl(3'-5')thymidine 2-cyanoethyl phosphotriester 以
水 、
乙腈 为溶剂,
以16%的产率得到[(2R,4S,5R,10S,11R,13R,18R,19S)-8-(2-cyanoethoxy)-18-hydroxy-11-(hydroxymethyl)-18,24-dimethyl-8,15,17,22-tetraoxo-7,9,12,26-tetraoxa-1,14,16,21-tetraza-8lambda5-phosphapentacyclo[18.2.2.12,5.110,13.014,19]hexacosa-20,23-dien-4-yl] 4-oxopentanoate