HRID1584680
反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
Step B--Synthesis of Nα-(3-(2,3,4,6-Tetra-O-benzoyl-β-D-galactopyranosyl)cyclohept-1-yl)-L-leucine tert-Butyl Ester: To the product from Step A (50 mg, 71 μmol) and L-leucine tert-butyl ester dihydrochloride (80 mg, 354 μmol) in dichloromethane (700 μL) and methanol 700 μL) was added sodium cyanoborohydride (2 mg). After 48 h, the mixture was concentrated and purified by column chromatography (SiO2, toluene/ethyl acetate, 8:1) to give the title compound (48 mg, 78%).
WORKUP
后处理
- concentrationthe mixture was concentrated
- custompurified by column chromatography (SiO2, toluene/ethyl acetate, 8:1)