1-Benzyl-4-methyl-pyrrolidine-3-carboxylic acid methyl ester → 6-[(3S,4S)-1-benzyl-4-methylpyrrolidin-3-yl]-1-(tetrahydro-2H-thiopyran-4-yl)-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one

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Following the procedure for the preparation of 6-[(3,4-trans)-1-benzyl-4-methylpyrrolidin-3-yl]-1-(2-methoxyphenyl)-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one but substituting 5-amino-1-(tetrahydro-2H-thiopyran-4-yl)-1H-pyrazole-4-carboxamide and (3S,4S)-methyl-1-benzyl-4-methylpyrrolidine-3-carboxylate provided the title compound. 400 MHz 1H NMR (CDCl3) δ 8.02 (s, 1H), 7.41-7.26 (m, 5H), 4.60-4.53 (m, 1H), 3.86-3.83 (m, 1H), 3.65 (m, 1H), 3.41-3.37 (m, 1H), 3.02 (m, 1H), 2.94-2.75 (m, 4H), 2.60-2.31 (m, 3H), 2.25-2.16 (m, 2H), 1.99-1.94 (m, 1H), 1.62 (m, 2H), 1.20 (t, J=7.1 Hz, 3H). MS: (M+H m/z 410.2).

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