反应详情

To a solution of 0.64 g of 1-amino-3-(2-dimethylaminoethyl)guanidine hydroiodide (prepared following the procedure described in Houben-Weil, Metoden der Organischen Chemie, Band VIII, page 183) in 20 ml of 10-4M hydrochloric acid a solution of 1.10 g of 3β,14β-dihydroxy-5β-androstane-17β-carboxaldehyde (Boutagy J. and Thomas R., Aust. J. Chem., 1971, 24, 2723) in 25 ml of dioxane was added dropwise at room temperature. After 3 hrs, the solution was evaporated to dryness under reduced pressure. The crude product was purified by flash-chromatography (SiO2) using chloroform/methanol/28% ammonium hydroxide 78/20/2 as eluant; the fractions containing the title compound were collected and evaporated to dryness. The residue was ground with di-iso-propyl ether to give 0.15 g of the title compound (I-ag) as hydroiodide, white solid.

1. additionwas added dropwise at room temperature
2. customthe solution was evaporated to dryness under reduced pressure
3. customThe crude product was purified by flash-chromatography (SiO2)
4. additionthe fractions containing the title compound
5. customwere collected
6. customevaporated to dryness