Triethylamine → 4-(5-Methoxycarbonylindan-2-yl)amino-5-methylthieno[2,3-d]pyrimidine

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Reaction Steps

Using 2-(tert-butoxycarbonylamino)-5-methoxycarbonylindan (60 mg, 0.21 mmol) synthesized in the above Preparation Example 3, 4N hydrochloric acid-dioxane (1.0 ml) and acetic acid (3.0 ml), and then ethanol (1 ml), triethylamine (88 μl, 0.63 mmol), and 4-chloro-5-methylthieno[2,3-d]pyrimidine (39 mg, 0.21 mmol), a similar procedure to Example 24 was carried out. The product obtained was purified by silica gel chromatography (methylene chloride:ethyl acetate=6:1) to obtain the title compound (32 mg, 0.094 mmol) having the following physical properties:

Provenance & Evidence