反应详情

(2RS,3RS,5RS)-2-tert-Butoxycarbonylamino-3-hydroxy-5-amino-1,6-diphenylhexane obtained in Example 39 (A) was dissolved in methylene chloride (1 ml), and trifluoroacetic acid (0.5 ml) was added at room temperature. After the mixture was stirred at room temperature for 3 hours, a 10% aqueous sodium hydroxide was added. After being extracted with methylene chloride, the mixture was dried over anhydrous sodium sulfate. After the desiccant was filtered off, the filtrate was concentrated under reduced pressure to give the desired compound as a colorless solid (3.2 mg).

1. extractionAfter being extracted with methylene chloride
2. dry with materialthe mixture was dried over anhydrous sodium sulfate
3. filtrationAfter the desiccant was filtered off
4. concentrationthe filtrate was concentrated under reduced pressure