反应详情

A solution of 24.6 mg product from Step A Example 6, 15.9 mg EDC, 11.2 mg HOBt, 17.2 mg methyl (2R)-3-amino-2-hydroxypropanoate hydrochloride from Step C Example 4 and 39 μL DIEA in 0.5 mL DMF was stirred at room temperature over night. The title compound was isolated by preparative HPLC using 55˜75% MeCN gradient over 10 minutes at 8.0 mL per minute with 0.1% TFA on a 9.4×250 mm SB-C18 Zorbax column as a white solid after lyophilization. LC-MS: 2.55 min. (M+H=546.3).