3-Isocyanato-1lambda6-thiolane-1,1-dione → 1-{1-[(4S,5R)-2-(6-tert-Butyl-4-ethoxy-pyridin-3-yl)-4,5-bis-(4-chloro-phenyl)-4,5-dimethyl-4,5-dihydro-imidazole-1-carbonyl]-piperidin-4-yl}-3-(1,1-dioxo-tetrahydro-1lambda6-thiophen-3-yl)-urea

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Reaction Steps

In a manner similar to the method described in example 160, (4-amino-piperidin-1-yl)-[(4S,5R)-2-(6-tert-butyl-4-ethoxy-pyridin-3-yl)-4,5-bis-(4-chloro-phenyl)-4,5-dimethyl-4,5-dihydro-imidazol-1-yl]-methanone (example 204) was reacted with 3-isocyanato-tetrahydro-thiophene 1,1-dioxide (Chembridge) to give a mixture of diasteremers. The diastereomers were separated by supercritical fluid chromatography (Berger Instrument Multi-Gram II, Whelk-O column, eluting with 40% isopropanol in carbon dioxide) to give the title compound as post-peak. HR-MS (ES, m/z) calculated for C39H49Cl2N6O5 [(M+H)+] 783.2857, observed 783.2857.

Provenance & Evidence