1: 6-chloro-9H-purin-2-ylamine; cis-3-benzoyloxy-4-(hydroxymethyl)cyclopentene With N-methyl-2,2,6,6-tetramethylpiperidine; tris(dibenzylideneacetone)dipalladium (0); triphenylphosphine in tetrahydrofuran; dimethyl sulfoxide T=45°C; Solid phase reaction; addition; elimination; 16 h; 2: anhydrous cyclopropylamine With N-ethyl-N,N-diisopropylamine in butan-1-ol T=80°C; Solid phase reaction; amination; 4 h; Further stages.;