Heterocyclic derivatives and their use as prostaglandin d2 receptor modulators
一种卤素、化合物的技术,应用在式杂环衍生物及其作为前列腺素受体调节剂领域,能够解决功效有限等问题
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[1165] The following examples illustrate the preparation of the compounds of the invention but do not limit their scope in any way. Whenever used in the experimental part, general structures 1, 2, 3, etc. refer to the respective structures described in the preceding general description of the preparation of compounds of formula (I) below.
[1166] General method for preparing compounds of formula (I):
[1167] saponification
[1168] To (±)-(3-{5-fluoro-2-[trans-2-(4-fluoro-phenyl)-cyclopropanecarbonyl]-1,2,3,4-tetrahydro-isoquinoline-8 To a solution of ethyl}-4-methoxy-phenyl)-acetate in DMF (1 mL) was added 2M aqueous NaOH (1 mL). The mixture was stirred at r.t. for 18 hours. The solution was neutralized with formic acid (ca. 1 mL), purified by preparative HPLC (column: Atlantis, 18 x 50 mm, 10 μm, UV / MS, acidic conditions) and concentrated in vacuo to afford the desired acid as a white solid.
[1169] Listed in Table 1 below are examples of compounds of formula (I) prep...
example 169
[1232] Example 169: Benzyl 8-(5-carboxymethyl-2-methoxy-phenyl)-5-cyano-3,4-dihydro-1H-isoquinoline-2-carboxylate (C27H24N2O5, MW =456.17)
[1233] To an ice-cooled suspension of 5-cyano-8-hydroxy-3,4-dihydro-1H-isoquinoline-2-carboxylic acid benzyl ester (73 mg, 0.24 mmol, 1.0 eq.) in DCM (4.4 mL) Triethylamine (99 μL, 0.71 mmol, 3.0 eq.) and trifluoromethanesulfonic anhydride (61 μL, 0.355 mmol, 1.5 eq.) were sequentially added to the solution. The reaction mixture was stirred at 0 °C for 30 min and at r.t. for another 45 min. The mixture was diluted with DCM (10 mL) and washed with saturated NaHCO 3 Aqueous (2x) washes. The organic layer was washed with MgSO 4 Dry, filter and concentrate in vacuo. To triflate, [4-methoxy-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl] - ethyl acetate (97mg, 0.24mmol, 1.0eq.) and sodium carbonate (100mg, 0.95mmol, 4.0eq.) in toluene / EtOH / water 20:4:1 (4.8mL) in N 2 To the mixture below was added tetrakis(triphenylphosphine)pa...
example 170
[1235] Example 170: Benzyl 8-(5-carboxymethyl-2-methoxy-phenyl)-3,4-dihydro-1H-isoquinoline-2-carboxylate (C26H25NO5, MW=431.17)
[1236] To an ice-cooled solution of benzyl 8-hydroxy-3,4-dihydro-1H-isoquinoline-2-carboxylate (113 mg, 0.40 mmol, 1.00 eq.) in DCM (1 mL) was added NEt in sequence 3 (0.17mL, 1.20mmol, 3.00eq.) and trifluoromethanesulfonic anhydride (0.10mL, 0.60mmol, 1.50eq.). The reaction mixture was stirred at 0 °C for 30 min and at r.t. for another 45 min. The mixture was diluted with DCM (50 mL) and washed with saturated NaHCO 3 Wash with aqueous solution (2 x 25 mL). The organic layer was washed with MgSO 4 Dry and concentrate in vacuo. To triflate, [4-methoxy-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl] - ethyl acetate (128mg, 0.40mmol, 1.00eq.) and sodium carbonate (170mg, 1.60mmol, 4.00eq.) in toluene / EtOH / water 20:4:1 (2.5mL) in N 2 To the lower mixture was added tetrakis(triphenylphosphine)palladium(0) (23mg, 0.02mmol, 0.05eq.). The m...
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