3-Chloro-6-[2-(3-chloro-4-methoxy-phenyl)-ethyl]-6-cyclopentyl-dihydro-pyran-2,4-dione → 6-[2-(3-chloro-4-methoxyphenyl)ethyl]-6-cyclopentyl-3-({5-[(dimethylamino)methyl]-4-methyl-4H-1,2,4-triazol-3-yl}thio)-4-hydroxy-5,6-dihydro-2H-pyran-2-one

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The title compound was prepared as described in Example C(70), where 3-chloro-6-[2-(3-chloro-4-methoxyphenyl)ethyl]-6-cyclopentyldihydro-2H-pyran-2,4(3H)-dione was used in place of 3-chloro-6-[2-(5-chloro-2,4-dimethoxyphenyl)ethyl]6-cyclopentyldihydro-2H-pyran-2,4(3H)-dione and 5-[(dimethylamino)methyl]-4-methyl-4H-1,2,4-triazole-3-thiol, as described in Step 1 of Example C(83), was used in place of 6-hydroxy-8-mercaptopurine monohydrate. 1H NMR (500 MHz, DMSO-d6, WET suppression of DMSO-h6 (2.5 ppm) and H2O (3.35 ppm) peak areas) δ 1.50-1.69 (m, 8H) 2.02 (m, 2H) 2.35 (m, 1H) 2.50 (m, 1H, overlap with dmso) 2.63 (m, 1H) 2.72 (d, J=18.1 Hz, 1H) 2.87 (s, 6H) 2.92 (d, J=15.0 Hz, 1H) 3.63 (s, 3H) 3.80 (s, 3H) 4.53 (s, 2H) 7.01 (d, J=8.5 Hz, 1H) 7.18 (dd, J=8.4, 2.1 Hz, 1H) 7.31 (d, J=1.9 Hz, 1H). MS (APCI) calcd for C25H33ClN4O4S: 521.08; found M=521.2.

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