反应详情

Substantially the same procedure as in Example 21 was repeated using 3',4',5'-trimethoxyacetophenone (1.25 g) and 6-nitroindole-3-carboxaldehyde (1.13 g) except that the obtained product was further purified by preparative HPLC, that the eluting solution was cooled, and that the precipitated crystals were collected by filtration, to give Compound 34 (26 mg).

1. customwas further purified by preparative HPLC, that the eluting solution
2. temperaturewas cooled
3. filtrationthat the precipitated crystals were collected by filtration