5-[tert-butyl(diphenyl)silyl]oxypent-3-yn-1-ol

2-amino-6-chloro-9-(5-phosphonopent-2-en-1-yl)purine

1-(5-phosphonopent-2-en-1-yl)uracil diethyl phosphonoester

[5-(tert-butyl-diphenyl-silanyloxy)pent-3-enyl]phosphonic acid diethyl ester

2-amino-6-chloro-9-(5-phosphonopent-2-en-1-yl)purine diethyl phosphonoester