反应详情

The compound of example 240 (70 mg, 0.163 mmol) was dissolved in a mixture of methanol (1.5 ml) and ethanol (1.5 ml) and cooled in an ice bath. Sodium borohydride (18.9 mg, 0.49 mmol) was added in two batches and the mixture reacted with ice cooling until completion (3 h). The volatiles were evaporated and the residue was partitioned between diethyl ether and 1 N hydrochloric acid. The aqueous phase was extracted with diethyl ether, and the combined organic phases were dried and evaporated. The residue was purified by RP HPLC (water/ACN gradient) to yield 13 mg of the title compound.

1. temperaturecooled in an ice bath
2. customthe mixture reacted with ice cooling until completion (3 h)
3. customThe volatiles were evaporated
4. customthe residue was partitioned between diethyl ether and 1 N hydrochloric acid
5. extractionThe aqueous phase was extracted with diethyl ether
6. customthe combined organic phases were dried
7. customevaporated
8. customThe residue was purified by RP HPLC (water/ACN gradient)